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GNU/Hurd Delayed To Fix Disk Size, Serial I/O Limitations

gregger writes "This Infoworld article indicates that the GNU/Hurd is still waiting to stampede. Evidently they have to switch from the GNU Mach implementation they're using now to OSKit's Mach which will help them support faster serial I/O and larger hard discs. Currently GNU/Hurd will only support somewhere between 1 to 2 GB partitions."

92 of 552 comments (clear)

  1. Re:GNU/Hurd by Anonymous Coward · · Score: 5, Funny

    GNU *is* GNU/Linux. Except for this tiny itty-bitty kernel that some guy wrote, which we only took 19 years to get around to doing.

    -RMS

  2. Hurd delayed? by Anonymous Coward · · Score: 5, Funny

    I'm shocked! SHOCKED!

  3. cool! by Anonymous Coward · · Score: 5, Funny

    I hope it will be able to run the new Mosaic software. Have you guys seen that? It's like Gopher but with you can add pictures, change the font size, etc.

    1. Re:cool! by paladin_tom · · Score: 5, Insightful

      This isn't the right way to measure the "goodness" of a system. The Hurd has concepts that are actually innovative.

      If you're going to say that the Hurd sucks because it doesn't support some piece of hardware or software, then *damn*, Linux really sucks... and it did even more so at version 0.2. Gee, what am I doing... where's a Windows box? Win 98 must obviously be superior to all these Free/Open Source systems, with all the hardware and software it supports.

      --
      #define sig "Every social system runs on the people's belief in it."
    2. Re:cool! by Anonymous Coward · · Score: 3, Funny

      Well, the PROPER way to measure the goodness of a system is by a simple qualitative measure know as...

      wait for it..

      *B*F*I* the BEARD FULLNESS INDEX

      Let's compare the major players in our discussion:

      HURD - Richard Stallman has a rich full beard. So.. BFI_stallman = BFI_hurd = 10

      WINDOWS - ever seen a picture of that Paul Allen dude when he was younger? BEARD! What about Bill Gates? Well, he always looked like a faggot or an old ugly woman, no facial hair. So...
      BFI_allen = 7,
      BFI_gates = -1, and therefore it follows that
      BFI_windows = (7 - 1)/2 = 3.

      LINUX - Linus is beardless (but nowhere near as faggly as Gates) .. Alan Cox on the other hand .. whew. He gets an 5.6 on the beard-o-meter, due to straggliness. Therefore:
      BFI_torvalds = 0,
      BFI_cox = 5.6, and therefore,
      BFI_linux = 2.8

      Now, clearly, beards indicate intellectuals who want to hide their faces from society. everybody knows that. that's why all professors have them.

      So it logically follows that the LOWEST BFI will yield the most POPULAR and USABLE operating system. To recap our examples:

      BFI_hurd = 10
      BFI_windows = 3
      BFI_linux = 2.8

      Therefore, clearly the winner is Linux, with WIndows a close second. Unfortunately, Stallman pushes the HURD's BFI off the chart and out of the public eye. Sorry, Dicky!

  4. Will they have to change the name? by TheConfusedOne · · Score: 4, Funny

    OSKit/HURD?

    --
    --- I wish I could hear the soundtrack to my life. That way I'd know when to duck.
    1. Re:Will they have to change the name? by paladin_tom · · Score: 5, Informative

      Actually, when distinguishing between implementations of the Hurd on different microkernels, we ususally say Hurd/Mach versus Hurd/L4. This is consistent with GNU/Linux and GNU/Hurd, ie. HigherLayer/LowerLayer.

      OSKit-Mach is just a superior implementation of Mach, so we'd still call it Hurd/Mach if we needed to make a distinction.

      Real improvements to the Hurd will come with the eventual port to the microkernel which is much superior to Mach (and the answer to current anti-microkernel FUD).

      --
      #define sig "Every social system runs on the people's belief in it."
    2. Re:Will they have to change the name? by Arandir · · Score: 4, Funny

      So in other words, when the GNU project finally produces a complete operating system with all the operating environment trimmings, the correct name will be "The GNOME/GNU/Hurd/Mach System"?

      --
      A Government Is a Body of People, Usually Notably Ungoverned
  5. whoops by seanw · · Score: 5, Interesting

    The release of a production version of the free GNU operating system (OS) has been delayed beyond the end of the year, as the current development version of the system does not support large disk partitions and high speed serial I/O (input-output), according to Richard Stallman

    is it just me, or does it sound like they had it all ready to ship, date planned and everything, and then someone pointed out that it was lacking some major I/O features/performance, and the developers collectively slapped their foreheads and went "oh shit, yeah, we kinda forgot about that one."

    like, all this took them by surprise? sucks to forget to implement a couple crucial features, eh?

    1. Re:whoops by paladin_tom · · Score: 3, Insightful

      This has nothing to do with the Hurd, and everything to do with the microkernel it's sitting on. At present, that microkernel is obsolete and slow.

      --
      #define sig "Every social system runs on the people's belief in it."
  6. 19 years by Anonymous Coward · · Score: 5, Funny

    GNU/Hurd. 19 years in the making, and worth every minute of it.

    Finally the world will have a politically correct OS that works just like other Unices have for decades.

    1. Re:19 years by MyHair · · Score: 3, Informative

      GNU/Hurd. 19 years in the making, and worth every minute of it.

      That's not entirely fair. A lot of Linux-based OSes contain very healthy doses of GNU software and are compiled with GCC, one of the first major contributions of GNU.

      The kernel was one of the last things they tackled, but along came Linus Torvalds and now many OS kernel developers would rather work on Linux than the Hurd.

  7. Thank god they're fixing partition size by metalhed77 · · Score: 5, Interesting

    Does anyone here know why they let the partition size issue languish for so long? Hell, I've had files larger than 1GB (and not porn! go figure). Hard disks have been at the 10 GB mark for years, where it really doesnt' make sense to have 10 partitions. I wish richard luck. On another note, does anyone know how HURD benchmarks against linux?

    --
    Photos.
    1. Re:Thank god they're fixing partition size by cscx · · Score: 4, Funny

      On another note, does anyone know how HURD benchmarks against linux?

      Currently, the HURD doesn't support benchmarking software. But they hope to add that functionality within the next few years, if that answers your question.

    2. Re:Thank god they're fixing partition size by Wesley+Felter · · Score: 3, Informative

      IIRC the partition size limit is due to the fact that the filesystem server mmaps the partition; on 32-bit systems there isn't enough address space for large partitions.

      As for benchmarks, I think the answer is "don't ask".

    3. Re:Thank god they're fixing partition size by caseyc · · Score: 3, Interesting

      I have to wonder if GNU/Hurd developers have been partitioning their HD's with so many 1gb partitions up until now. And, at what point did it occur to them that there was a better way to do it?

    4. Re:Thank god they're fixing partition size by Waffle+Iron · · Score: 4, Funny
      IIRC the partition size limit is due to the fact that the filesystem server mmaps the partition; on 32-bit systems there isn't enough address space for large partitions.

      Hmmm. That is a very elegant way to handle disk partitions. Maybe they shouldn't rush into a quick fix for this that loses the benefits of mmaping the whole partition. In a few short years, AMD, Intel and IBM will all be offering mainstream 64-bit CPUs, and they'll be able to mmap exabyte sized partitions without throwing out the current codebase.

      I think that they should just hold tight until then. No need for reckless haste.

    5. Re:Thank god they're fixing partition size by the_other_one · · Score: 3, Funny

      The project has been underfunded

      They must have just got their first 10 GB hard disk in the P100.

      --
      134340: I am not a number. I am a free planet!
    6. Re:Thank god they're fixing partition size by defile · · Score: 5, Informative

      It's a really hard problem to fix.

      The ext2fs implementation is actually a userland process which takes a partition as an argument and attaches a translator to the mountpoint. The translator's job is to send requests under this namespace to this server.

      The ext2fs server actually mmap()s the partition containing the filesystem and performs all operations as if it were a contiguous block of memory. Unfortunately the ext2fs driver, since it's a userland process, can only address 2GB of memory (the kernel often takes half). Adding a heap and a stack leaves mmap() with about 1GB to safely play with.

      Eliminating this limitation would mean using either a 64-bit architecture, or using a read/write/lseek interface instead of mmap, which may mean totally throwing out the ext2fs server as-is. Perhaps they weren't concerned with the limitation because they thought everyone would be using 64-bit architectures by now?

      I'm not sure if there are any other reasons other than the filesystem servers using mmap() for the limitation.

    7. Re:Thank god they're fixing partition size by paladin_tom · · Score: 5, Insightful

      Does anyone here know why they let the partition size issue languish for so long?

      The partition size is limited because the Hurd maps the entire disk partition into main memory, and the 32-bit architecture of current Intel processors limits the size of a virtual address space to 2^32 bytes, hence the limitation. Changing the Hurd to do things differently isn't exactly a one-weekend patch.

      On another note, once we go the 64-bit processors, we'll see a much larger virtual address space (double it's current size 32 times), and hence a much higher cap on the partition size (assuming no fix).

      On another note, does anyone know how HURD benchmarks against linux?

      This really isn't the right question to ask: remember that the Hurd is at version 0.2, and that "Premature optimization is the root of all evil." No new Free/Open Source kernel is going to ship and be immediately as fast and full-featured as Linux... things just don't work that way.

      What's important is that the Hurd represents new OS technology... and that's more important that any current lack of performance or drivers.

      --
      #define sig "Every social system runs on the people's belief in it."
    8. Re:Thank god they're fixing partition size by Some+Dumbass... · · Score: 5, Funny

      Hell, I've had files larger than 1GB (and not porn! go figure).

      Hint: "man logrotate"

    9. Re:Thank god they're fixing partition size by istartedi · · Score: 3, Insightful

      Currently, the HURD doesn't support benchmarking software

      Oh man! I take back every bad thing I ever said about RMS and friends. Anyone who can disable benchmarking software deserves not only a McArthur grant, but international acclaim and recognition at every level. Why... oh... OK. Go ahead. Give him his Free Software tax. He deserves it. I'll be there to applaud him at the ribbon-cutting ceremony for the Bureau Of Software Development in Washington DC. Imagine! At last. No more benchmarks. This is a red letter day indeed.

      --
      For all intensive purposes, "whom" is no longer a word. That begs the question, "who cares"?
    10. Re:Thank god they're fixing partition size by Permission+Denied · · Score: 5, Interesting
      The ext2fs server actually mmap()s the partition

      This is completely nuts.

      I can appreciate that the filesystem driver is a userland process - this means I can write a "filesystem" as a normal userland process (eg, make some things have a filesystem-like interface, so you can do interesting things with databases like make /etc/passwd a directory). This is a cool idea.

      However, using mmaping an entire partition is just crazy. This is poor design. What were they thinking?

      Are they trying to avoid the system call overhead for seek() calls? This is the only reason I can think of that someone would do this - when you read/write/seek, you have to do a system call for seek(), but that comes "for free" when you mmap() because you specify the address. This would only be a problem with HURD-like systems, because there is no overhead if the filesystem driver runs in kernel space along with whatever other subsystems it needs to use.

      I know everyone hates backseat designers, but I'd like to know if the following approach has been considered:

      Make two new system calls, say "readaddr" and "writeaddr". These work like read and write, except that you also specify an offset (perhaps with a "whence" field like lseek). This saves you the overhead of calling seek all the time by combining the operations into one system call. This might be useful for other things as well, but I would imagine a filesystem driver is one speed-critical piece of code that does a lot of jumping around. Actually, I just remembered that there already are calls for this: pread/pwrite.

      Another possible approach: using mmap is nice, but mapping in an entire partition is fubar. Why not map in specific parts of the partition as they become needed? Eg, keep superblock mapped right away from startup, and map in other parts as they are needed. Seems a bit complex, but could be done more easily with another layer of abstraction (some library which keeps a hash or something of mmap()ed bits and provides a nice interface for filesystem drivers). I'm guessing mmap was used as this transfers certain operations (eg, cache management) "deeper" into the "kernel" and avoids code duplication.

      But anyway, mmaping an entire partition is really nuts. They're not getting any sympathy from me.

    11. Re:Thank god they're fixing partition size by Olivier+Galibert · · Score: 5, Informative

      No, what they're trying to do is offload the cache management to the virtual memory manager. With mmap() backed by the partition itself, the VM can read and write the pages transparently w.r.t the ext2 server. With read/write/lseek, you have to do actual memory management. Last time I looked, there was no interface for collaboration between the VM and the servers for cache management.

      And this kind of cache management is horribly hard in a monolithic kernel for a start. Look how long 2.4 took before the VM behaviour was considered decent (2.4.16 iirc). A decently fast distributed one is even worse to design.

      OG.

  8. Systems work by peterb · · Score: 5, Insightful

    Is harder than most people seem to think it is.

    That being said, I think the Hurd is pretty much a solution in search of a problem. Who cares? And why? The FreeBSD kernel does everything Hurd purports to want to be able to do, and is more mature, stable, and feature-complete. The same could probably be said of the Linux kernel.

    Does that mean the Hurd guys should stop what they're doing? Of course not. Writing operating systems is fun.

    It does, however, probably mean that the stuff they're doing isn't really news.

    1. Re:Systems work by peterb · · Score: 4, Insightful

      Well, that's a little harsh. I mean, we all do things that we want to do. I "could" be writing software to cure cancer and AIDS, but instead I'm working at a storage startup trying to make the big bucks and work with a great group of people. We can't all sacrifice our lives for the Great Cause.

      And I agree that 20 years ago, "wouldn't it be nice if there was a free operating system" seemed like such a cause. But ever since BSDi settled the unix issues, it seems to me that BSD [footnote 1] became that free operating system.

      -pete
      footnote 1: Substitute Linux depending on your political preferences. Void where prohibited by law. Call before midnight tonight for complete refund of price of purchase. Terms available, don't be fooled by cheap imitations, no salesman will visit your home. My apologies to Tom Waits.

  9. Ironic by jeramybsmith · · Score: 3, Insightful

    GNU was intended to solve the problem of their not being a free unixlike OS. Now there are like 50 but still no GNU. Maybe they should refocus on providing a great userland?

    --
    Never overestimate the end user. -jeramy b. smith
  10. Re:Umm, okay... by aussersterne · · Score: 3, Insightful

    My home directory (which only contains material back to '98, all else is archived on QIC, which I can't even read any more) is already 6GB, and that's just mail and documents -- all of my images and sound files are stored elsewhere.

    No wonder I don't use Hurd.

    I think the Hurd is a nice, interesting CS project, but there isn't enough of a pragmatic influence amongst its developers ranks to make it actually useful to anyone.

    --
    STOP . AMERICA . NOW
  11. Nonstandard Partitioning? by LinuxGeek · · Score: 3, Insightful
    added Stallman. "I don't think it was realized how bad it is practically speaking not to be able to use whatever your disk partitioning is. Clearly most people are not going to repartition their disks to be able to try out our Hurd based system."

    What kind of systems are they using for development that they just noticed the inability to read current large partitioning schemes and interact with them? This dosen't do much to encourage me to try HURD and hope it will support much of my newfangled hardware.
    --

    Kindness is the language which the deaf can hear and the blind can see. - Mark Twain
  12. What is HURD? by randomErr · · Score: 5, Informative


    http://www.gnu.org/software/hurd/hurd.html

    GNU HURD is a slimmer re-write of the UNIX kernel that is completely OOP.

    Here's a cut and paste from the homepage:

    The Hurd is not the most advanced kernel known to the planet (yet), but it does have a number of enticing features:

    it's free software
    Anybody can use, modify, and redistribute it under the terms of the GNU General Public License (GPL).
    it's compatible
    The Hurd provides a familiar programming and user environment. For all intents and purposes, the Hurd is a modern Unix-like kernel. The Hurd uses the GNU C Library, whose development closely tracks standards such as ANSI/ISO, BSD, POSIX, Single Unix, SVID, and X/Open.
    it's built to survive
    Unlike other popular kernel software, the Hurd has an object-oriented structure that allows it to evolve without compromising its design. This structure will help the Hurd undergo major redesign and modifications without having to be entirely rewritten.
    it's scalable
    The Hurd implementation is aggressively multithreaded so that it runs efficiently on both single processors and symmetric multiprocessors. The Hurd interfaces are designed to allow transparent network clusters (collectives), although this feature has not yet been implemented.
    it's extensible
    The Hurd is an attractive platform for learning how to become a kernel hacker or for implementing new ideas in kernel technology. Every part of the system is designed to be modified and extended.
    it's stable
    It is possible to develop and test new Hurd kernel components without rebooting the machine (not even accidentally). Running your own kernel components doesn't interfere with other users, and so no special system privileges are required. The mechanism for kernel extensions is secure by design: it is impossible to impose your changes upon other users unless they authorize them or you are the system administrator.
    it exists
    The Hurd is real software that works Right Now. It is not a research project or a proposal. You don't have to wait at all before you can start using and developing it.

    --
    You say things that offend me and I can deal with it. Can you?
    1. Re:What is HURD? by Eil · · Score: 5, Funny


      This structure will help the Hurd undergo major redesign and modifications without having to be entirely rewritten.

      "...but we might change out the whole kernel from time to time when things aren't looking so good."

  13. Why OSKit? by Animats · · Score: 3, Insightful
    OSKit is a collection of operating systems parts for use by researchers, not a production system. It's intended to be straightforward and modular, but not heavily optimized. If the Hurd team is switching to OSKit, they must be in deep trouble.

    Now if they were switching to L4, that would be cool. But it would be a research effort.

    And why does anyone, at this late date, care much about high-speed serial line support?

    1. Re:Why OSKit? by jpmorgan · · Score: 4, Informative
      The Hurd will be switching to L4, when the NDAs on the latest version of L4 are dropped and there's a real implementation to work from.

      That port is fairly extensive, so right now they're moving to Mach + OSKit, since OSKit supports the Linux 2.2 device drivers, something Hurd is sorely lacking.

  14. Re:Delayed??? by gmack · · Score: 5, Interesting

    I actually watched Stallman speak in Montreal recently. One interesting tidbit was that he still seems dumbfounded about the fact that the Linux kernel beat them into production even though one of the advantages of microkernel is supposed to be ease of design and the fact that mach had half of the work done already.

  15. So, Linus was rfight? by Royster · · Score: 5, Interesting
    From Open Sources: Voices from the Open Source Revolution

    So at the time I started work on Linux in 1991, people assumed portability would come from a microkernel approach. You see, this was sort of the research darling at the time for computer scientists. However, I am a pragmatic person, and at the time I felt that microkernels (a) were experimental, (b) were obviously more complex than monolithic Kernels, and (c) executed notably slower than monolithic kernels. Speed matters a lot in a real-world operating system, and so a lot of the research dollars at the time were spent on examining optimization for microkernels to make it so they could run as fast as a normal kernel. The funny thing is if you actually read those papers, you find that, while the researchers were applying their optimizational tricks on a microkernel, in fact those same tricks could just as easily be applied to traditional kernels to accelerate their execution.
    --
    I have discovered a truly marvelous sig, unfortunately the sig limit is too small to contain i
    1. Re:So, Linus was rfight? by Pseudonym · · Score: 3, Insightful

      Linus was right at the time, yes. If he were starting Linux today, however, none of those three points would be correct. They're not experimental any more (WinNT before version 4.0, QNX and BeOS are/were all mainstream microkernel OSes), they do not execute notably slower than monolithic kernels (yeah, the Mindcraft survey was rigged, but Linux and NT are still competitive) and (apart from NT) they are no more complex than Linux is today.

      On the other hand, "I know I can do it and get it working" would still be a valid argument for him to write a monolithic kernel today, but that's open source for you.

      --
      sub f{($f)=@_;print"$f(q{$f});";}f(q{sub f{($f)=@_;print"$f(q{$f});";}f});
    2. Re:So, Linus was rfight? by Royster · · Score: 4, Funny
      How about this quote?


      In short: message passing as the fundamental operation of the OS is just an excercise in computer science masturbation. It may feel good, but you don't actually get anything DONE. -- Linus Torvalds

      --
      I have discovered a truly marvelous sig, unfortunately the sig limit is too small to contain i
    3. Re:So, Linus was rfight? by Animats · · Score: 5, Informative
      As it turns out, microkernels aren't all that portable, because they need close ties to the hardware to support all the fast interprocess communication that they do. But because they're small, the fact that they contain CPU-dependent code isn't as much of a limitation. Porting is more work per line of code, but there aren't as many lines to port.

      Look at QNX and L4 as examples of fast microkernels. About all the kernel does is manage memory, interprocess communication, and task switching. Everything else is in user space, where it's easier to debug and can't mess up as much when it breaks.

      In addition, if you're serious about security, a system where only the microkernel is trusted is the only thing that has any hope of working. In a microkernel system, the kernel tends not to change much over time, once it's working. New functionality is all in user space. You're not patching holes forever, like we are now.

      You do take a performance hit, but in a world where Java, Perl, and XML are used for production work, it's tiny by comparison.

  16. Thoughts of the future? by dacarr · · Score: 4, Insightful
    I'm seeing it now. Hurd will be to Linux what OS/2 Warp is to Windoze.

    Kudos to RMS for fighting the good fight, but he's already contributed significantly to Linux. I really don't think it'll go farther than that.

    --
    This sig no verb.
  17. Relevancy: by Wakko+Warner · · Score: 5, Funny

    It's being built so that GNU weenies will finally be able to claim a 100% PURE GNU OPERATING SYSTEM. This will gain them fame, fortune, and, their primary objective:

    Mad hoes.

    Yes. You see, the GNU HURD project is just a front. These guys are just looking for a little lovin'. I, for one, will be downloading and running HURD 1.0 as soon as it's released, to support the libidos of these great, visionary men.

    - A.P.

    --
    "Remember when the U.S. had a drug problem, and then we declared a War On Drugs, and now you can't buy drugs anymore?"
  18. Re:Tha HURD by Istealmymusic · · Score: 5, Informative

    No, Stallman is pushing this thing because its modular and relies on the Mach microkernel and the Flux OSKit library, in stark contrast to Linux's monolithic kernel design. Not to say monolithic kernels are bad, but microkernels do have their advantages, and both GNU/Hurd and GNU/Linux will each have their respective pros and cons.

    --
    "The lesson to be learned is not to take the comments on slashdot too literally." --Vinnie Falco, BearShare
  19. Re:Just more Vaporware? by MissMyNewton · · Score: 5, Funny

    Given all the comments I've been reading it's seems to me like this is nothing more than Vaporware.

    Maybe not. But right now it's clearly meant to be Hurd and not seen. ;-)

    --

    ---

    Information wants...you to shut your pie hole.

  20. Re:Tha HURD by rgmoore · · Score: 5, Insightful

    I'd assume that they're working on the HURD because they think that it's interesting, fun, and/or a good learning experience. Not all Free Software development has to take place with the goal of taking over the world. A lot of it, as ESR points out, is done to satisfy the interests of the individual authors. That's why there are a million projects on Freshmeat that are essentially clones of the same basic project- mp3 player frontends, database systems to catalog CD collections, etc. Individual programmers write them for their own personal reasons and then provide them for anyone else who wants a copy.

    --

    There's no point in questioning authority if you aren't going to listen to the answers.

  21. Delayed? by grub · · Score: 5, Funny


    I want a new slashdot poll:

    Which long awaited project will be the first to become reality?
    a) Duke Nukem Forever
    b) SMP for OpenBSD
    c) GNU/Hurd
    d) The second coming of Jeebus

    --
    Trolling is a art,
    1. Re:Delayed? by Xenographic · · Score: 3, Funny

      That couldn't ever be a real /. poll.

      The last option has to be:
      d) The second coming of Cowboy Neal.

    2. Re:Delayed? by ceejayoz · · Score: 3, Funny

      Well, D is the most likely one.

      And that's coming from an athiest.

    3. Re:Delayed? by isorox · · Score: 4, Funny

      d) The second coming of Cowboy Neal. /me shudders at the thought of him doing it once....

  22. Re:Delayed??? by Servo · · Score: 5, Insightful

    The biggest issue is that Stallman is an idealist. Torvalds just wanted a working Unix-line OS.

    --
    A slip of the foot you may soon recover, but a slip of the tongue you may never get over. -Benjamin Franklin
  23. Re:GNU/Hurd by evilviper · · Score: 3, Informative

    Well, if you want to start that arguement.

    Linux has nothing to do with Gnu. If you wanted to, you could make an OS using the Linux kernel & the BSD tools.

    So, it's now the distros (e.g. RedHat) that are supposed to start throwing GNU in there. Of course, that would cause some user confusion when they go searching for this "GNU Linux" kernel.

    Where does it end? What percentage of an OS's software has to come from a certain source that it must be included in all titles? Shall we call it RedHat Linux/GNU/XFree86/KDE ? Hey, the Gnu tools are replacable... XFree86 doesn't have any real competition, and so it more important than GNU.

    What's that you say? rms is just a vain blowhard that will suck up publicity where ever he can get some? I'm sure he would disagree with that completely, and then go and complain about bitkeeper some more.

    Man am I glad BSDs are better. In fact, rms thinks so too. Why else would he run FreeBSD on his server?

    --
    Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
  24. more than a nuisance by nuckin+futs · · Score: 3, Insightful

    according to the article:
    if you get a moderate size disk you have to divide it into smaller partitions, which is a nuisance.

    I'm sorry, but I have an 80gig drive. If I need between 40 to 80 partitions (between 1 and 2 gigs each), it's not just a nuisance.

  25. Linus was right by zurab · · Score: 3, Troll

    To solve the serial port problem, the GNU project is switching from the GNU Mach to the OSKit Mach, a Mach based on the OSKit for OS development from the University of Utah in Salt Lake City, Utah. "That version of Mach is supposed to get high speed serial line support, although it apparently isn't there in it yet," Stallman said. Before the GNU project could switch to the OSKit Mach, it had to rewrite the terminal support in the Hurd to support virtual consoles.

    By the time these guys switch to the new kernel, test all modules, etc., etc. they will have to update it again for new speed improvements and HD sizes.

    Linus was right that Microkernels tend to be overdesigned, give up speed, and are less practical than monolithic. This is the living proof.

  26. Re:Tha HURD by PylonHead · · Score: 3, Insightful

    And compiled high level language programs by definition can't be as fast as assembly language. But at some point we all decided that ease of programming and maintainance was more important.

    As processors get faster and faster the time it takes to do the context switch will become less and less important.

    --
    # (/.);;
    - : float -> float -> float =
  27. Re:Tha HURD by elmegil · · Score: 3, Interesting

    Given the common whining rhetoric complaining that they don't get enough credit for providing most of the "unix" utilities in Linux (while they do deserve credit, whining about it is not the answer), you'd think they'd be in a bigger hurry to do it themselves and do it "right". After all, Linus took what they claimed to want to do all those years ago, and did it himself in a lot less time and a lot more successfully (at least so far). That's not a ringing endorsement of the gnu/fsf ideology....

    --
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  28. well, duh by cowtamer · · Score: 3, Insightful


    Unlike other popular kernel software, the Hurd has an object-oriented structure that allows it to evolve without compromising its design. This structure will help the Hurd undergo major redesign and modifications without having to be entirely rewritten.

    And you guys are wondering why it's taken 19 years???

  29. Re:GNU/Hurd by joe_bruin · · Score: 5, Funny

    when me and richard m. stallman (the m stands for 'merryweather', did you know that?) started GNU/hurd back in 1908, we were out to replace the closed-internals of the international business machines (ibm) automatic punch card tabulator, which was at use at the time in the department of the census (where me and rich were summer interns). those machines had a 2mm steel case sealed with canadian metric square screws (wherever you call them, please don't correct me). since nobody had any metric screwdrivers at the time, much less square ones, we had no access to the internal cogs and wheels of the tabulator. we definitely did not want to punch through the casing, because that would void our warranty and service contract, and we would have to contract ibm to build us a second tabulator (which cost nearly 200 american dollars, and took 7 months to assemble).

    when it (frequently) broke down, we had to call an ibm machinist to come open the case for us and oil the flywheel or unjam the transverse flying arm on the card-feeder. as you can imagine, this seemed hardly the ideal solution, because usually all it needed was a little bit of work that me and rich could easily perform (even through we were not trained calculating machine operators).
    long story short, we starting working on the GNU/hurd tabulator. the centerpiece to our system was the pipelined card loader, which could load the next punchcard while the calculating engine was stilll churning on the previous card. we had also designed the system so that you could have dual loading mechanisms, so that one would always be running if the other jammed. rich always insisted that we should publish the blueprints for our machine, so that other people in our tabulation club could also build similar machines, and help us with the design. to me the whole idea sounded a bit bolshevik, but richard seemed intent to follow through with it, and i didn't mind so much. honestly, i didn't believe he would ever be able to publish anything, given that his handwriting was quite terrible (although he was working on a new type of typewriter, the electro-macs so that he would be somewhat more legible).

    5 years later, when i was conscripted to join the great war in europe, we had a nearly complete tabulator in hand. we had solved nearly all the problems of page clipping and bending that were present in our earlier builds, and our machine could run at a rate of well over 70 cards per minute (compared to the ibm's 42). however, we never completed the loader fully, and the latest model i saw could only hold 3 cards on the loading queue, making it much less than useful (however promising).

    i've lost contact with rich during the war years. i had always assumed he's been killed in action. anyway, i'm glad to see he's still going strong with our GNU/hurd tabulator, and wish him well on it. hopefully it will be done before my great grandkids graduate college.

  30. Re:Tha HURD by Uller-RM · · Score: 5, Insightful

    *shrug* You and I may like speed... but for the average user microkernels offer more advantages.

    You and I are running servers and gaming systems; we want pure performance, and don't mind rebooting a couple of times or recompiling a kernel to change hardware or upgrade drivers. In contrast, my mom has trouble right-clicking My Computer and choosing Properties to get a driver list. For her, a layered driver system that can dynamically load and unload drivers as needed and layer itself against instability is a MAJOR plus, even if it's not for me.

    Just because I favor speed over robustness doesn't mean either is intrinsically better - it just means my needs run that way. And, being a programmer, chances are that my needs represent a very tiny fraction of the computer users out there.

  31. I guess this makes sense by happystink · · Score: 5, Funny

    They better make sure that Hurd supports hard drives up to 20 terabytes or so, since that'll be about the average size by the time Hurd ever gets done.

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  32. Experimental is good. by matman · · Score: 4, Insightful

    I wish that fewer people would be so damned hardline pragmatic. It's worth putting time into stuff that could be cool and to try to do things in ways that are nice. Maybe it'll fail, but it's worth the attempt, even if it only serves as an example of what doesn't work.

  33. Re:Explanation please by Dunkalis · · Score: 3, Informative

    HURD is the kernel designed by the FSF, the people who made all of the GNU tools you and I use on Linux. It is architecturally different than all other Unix kernels in existence. Older Unix kernels are all monolithic kernels (ie, they are in a single file, vmlinuz on Linux). HURD runs servers that communicate with each other to do the functions that the single Linux kernel does. Go to the HURD website and read one of the technical docs, they are very helpful.

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  34. Re:Tha HURD by Pseudonym · · Score: 3, Interesting

    I think you might be confusing yourself.

    A monolithic kernel has no fewer layers than a modern microkernel OS. Say you want to write to a file. You make a system call, which goes through the system call interface layer, which then goes to the read() system call implementation, which then goes to the disk subsystem, which then goes to the disk driver.

    "But microkernel OSes have to copy stuff around between subsystems", I hear you say. Well that's true under Linux too. At the very least you have to copy the data from user space to kernel space. Compare this with a modern microkernel system where the data is copied straight between your user space and the disk server's user space. Same number of layers, same amount of copying.

    Having said, that I agree with you that Mach can't possibly be as fast as, say, Linux, which is why I carefully said this applied to "modern" microkernel systems, such as QNX. So my hopes aren't high for the Hurd, at least in its current incarnation. However, modern microkernel systems which run as fast as modern monolithic kernel systems are here today and they work.

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  35. Re:GNU/Hurd by corbettw · · Score: 3, Funny

    "when me and richard m. stallman (the m stands for 'merryweather', did you know that?) started GNU/hurd back in 1908, we were out to replace the closed-internals of the international business machines (ibm) automatic punch card tabulator..."

    You forgot to add that you were both wearing onions on your belts, which was the fashion at the time.

    --
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  36. Stability by Anonymous Coward · · Score: 3, Funny

    Microkernels are much more stable than monolithic kernels. For example, Solaris uses a monolithic kernel, NT uses a microkernel. Which one runs longer? See? - that's the advantage of microkernels.

    What GNU/Mach/OSKit/HURD will be is a unix-like OS with all the famed stability of NT. I can hardly wait. It'll probably ship real soon now, just like they've been promising for the last 20 years.

    Note to RMS - if you don't put Mach in the name, you're denying them their due credit. Seriously. I refuse to type GNU/Linux ever again until I see Mach/HURD on every FSF website.

  37. The dark side.. er. half.. um portion of penguins. by Art+Popp · · Score: 5, Insightful

    The best reason for HURD: "Because they want it that way."

    No one should have to justify what they want to build to you or anyone. Free software is not about the GPL. It's about freedoms. If these people want to build the most paradigmatically pure kernel ever conceived of, I think that's great.

    If they want to turn an architecturally useful chunk of marble into a useless statue of some kid named David. That's great too.

    When I enter a bunch of keywords into freshmeat and pick over the results, I occasionally ask myself, "What was this guy thinking?" Others with that same list ask that same question, but about different projects. It's the fact that we are free to combine conceptual purity, modifiability, stability, speed, and dozens of other engineering trade-offs in exactly the manner that we think is "right" that makes picking through Freshmeat like picking through a box of Dark Chocolates.

    Oddly, the same rule applies. If you don't like a particular chocolate, don't eat it; don't whine about it; just pick a different one

    I wish Mr. Stallman the fewest alpha particles and the best of luck in his noble pursuit.

  38. Re:Solution in search of a problem? by child_of_mercy · · Score: 3, Insightful

    well the debian framework is poised to be bolted on around it.

    so you'll have all the apps, functionality of a solid, if slightly sluggish linux distro.

    in theory the more elgant design should bring performance increases,

    and the superirio code maintainability won't need Bitkeeper to submit patches for it.

    in theory.

    --
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  39. Re:Tha HURD by tzanger · · Score: 3, Insightful

    You and I are running servers and gaming systems; we want pure performance, and don't mind rebooting a couple of times or recompiling a kernel to change hardware or upgrade drivers. In contrast, my mom has trouble right-clicking My Computer and choosing Properties to get a driver list. For her, a layered driver system that can dynamically load and unload drivers as needed and layer itself against instability is a MAJOR plus, even if it's not for me.

    Linux can dynamically load and unload drivers with ease. It's been able to do this since the 2.0.x kernels, IIRC. Hell you can compile modules and install them without updating the kernel tree in many cases. And kernel OOPSes in the stable trees have been few and far between, to say the least.

    Yes, microkernels are nifty but there isn't a whole hell of a lot one can do that a modular monolithic kernel can't. I hear there's even work to make the networking stack itself a module. Yer mom isn't going to notice any difference between a microkernel and the hybrid kernel that Linux offers.

  40. Why look at that example? by Inoshiro · · Score: 3, Insightful

    There are plenty of other microkernels in use very sucessfully. WinNT/2k/XP, Mac OS X, MkLinux, Minix, just to name a few!

    Don't make such wide-ranging judgements based off of one case. You're counting your chickens before they are hatched.

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  41. depend on what you mean by "right" by g4dget · · Score: 3, Insightful
    The choice that Linus made was great for getting the project going: something that's easy to understand and easy to hack. But that doesn't mean it's good in the long run--the same could have been said for DOS. Microsoft makes such expedient choices constantly--that doesn't mean they are "right" in the long term.

    The Linux kernel is running out of steam--the software development is becoming more and more unmanageable (see the BitKeeper debates), and drivers and new functionality often take years to appear in stable, up-to-date form in the kernel.

    Those are the kinds of problems microkernels were supposed to address. I have no idea whether the GNU/Hurd does or does not address them, and even if it does, it is 15 year old technology. But I do know that Linux isn't addressing them right now, and that's a problem.

    I suspect that what will actually happen is that in a couple of years, there will be a severely hacked Linux kernel fork that keeps driver and file system compatibility at the source level for a while but otherwise goes its own way.

    1. Re:depend on what you mean by "right" by Ian+Bicking · · Score: 4, Interesting
      I have no idea whether the GNU/Hurd does or does not address them, and even if it does, it is 15 year old technology.
      The Hurd isn't really a good microkernel -- it's not really a microkernel at all, but a bunch of services built ontop of a microkernel (Mach). Of course, the microkernel is essential to the actual operation, and the services have been written with a specific micokernel in mind... but it's not unreasonable to consider the Hurd running on a different (better, more advanced, faster) microkernel. People in the Hurd community have talked about just this, though of course no one has actually done the hard work of converting it.

      But sadly, my impression of what the Hurd has shown, is that just because something is userspace doesn't mean its easy to debug. It seems like code accessibility -- even for original developers -- has not been very good. I think it's in the same way that threaded programming is much harder to debug... a complex set of interworking services is even worse.

      And while microkernels allow a certain level of modularity, it really should be possible to achieve a great deal of modularity in a monolithic kernel as well -- just not in as safe a manner. I don't know that safety is the difficult part of Linux development. Well... I'm not entirely clear on what is the difficult part, I've never tried to program on the kernel. Probably an issue of factoring -- when refactoring needs to occur across module boundries (for whatever reason) it requires different developers to communicate and agree on things (which is where the overload is occuring). But that same problem will exist in a microkernel -- only the refactoring will be occuring between processes. That's not a big difference.

      Maybe with enough thoughtfulness you can refactor everything in the Right Way, so that interfaces are entirely stable and development can occur without as much interdependence. That's not impossible -- there's a lot of experience from Linux and elsewhere to learn from. But I don't think that is related to monolithic or microkernel design.

  42. Is this really a surprise anyway? by mosch · · Score: 5, Funny

    What's the next big headline, 'Flying Cars That Turn Into Briefcases Not Available Yet'?

  43. Re:The Hurd by paladin_tom · · Score: 5, Insightful

    Bang on the money.

    If I might add to what you've pointed out, RMS has explained that the motivation for continuing development of the Hurd is that it has the potential to be something much more powerful.

    Which leads to what really bothers me about the Slashdot crowd's reaction to the Hurd. Lot's of people I know criticize Free/Open Source Software just rips stuff off, and doesn't innovate. Well, the Hurd is one of the most innovative Free Software projects around. These guys were talking about buiding a multi-server OS back at the beginning of the 90s.

    Come on, once the Hurd is finished, GNU/Hurd will be years ahead of GNU/Linux, Windows NT, or Mac OSX. The only other OS I know of that's as theoretically-advanced as GNU/Hurd is QNX another multi-server.

    This is cool stuff. Unfortunately, it seems that most people just want to complain, "Oh, does it have the drivers for XXXXX? No. Then it's useless." Grow up - the value of an operating system isn't defined by what hardware it runs on. That's much easier to change than the fundamental architecture of the system.

    --
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  44. Re:GNU/Hurd by Twirlip+of+the+Mists · · Score: 4, Informative

    Not true, friend. There are alternatives even to the GNU C library for those who object to RMS's politics.

    And whether or not one uses the GNU C compiler is irrelevant. Code compiled with GCC is not part of the GNU project, nor it is required to be licensed with the GNU license. If you prefer, though, you can use Intel's C compiler, or Metrowerks's, or whichever compiler will work with your target architecture.

    And you're mistaken about one more thing. The reason people drop the "GNU/" part of the name "GNU/Linux" is because "Linux," as has been pointed out again and again here by a persistent AC, is a registered trademark. Calling anything "GNU/Linux" without Linus Torvald's permission is infringement, and it's illegal. The name of the operating system is "Linux," and unless Torvalds says otherwise, that's the end of that.

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  45. Re:Hurd developers, please by paladin_tom · · Score: 3, Insightful

    Right. Any software project that takes effort, breaks new ground, and has real academic value isn't worth it.

    Microsoft should be thanking you for spreading this attitude among Free/Open Source developers.

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    #define sig "Every social system runs on the people's belief in it."
  46. In 1985... by ttfkam · · Score: 5, Informative

    microkernels were the rage. HURD answered the call and started work. Now, almost 20 years later, MIT pulls the rug out with exokernels. So will we wait until 2020 to get a working model of that too?

    God bless HURD for trying to advance the state of the art and improve upon the dated UNIX model, but sheesh! I wish HURD were ready for prime time. I really do. But a working model with caveats (Linux, OSX, *BSD) will always be better than a better model that's mostly theoretical in the real world.

    That said, no one's paying the HURD developers. If it gos their nads, have at it. RMS needs to relax and realize that it is little more than a research experiment and not the second coming.

    --

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  47. Where is Mach today? Here are two places. by aussersterne · · Score: 3, Informative

    Try:

    MkLinux and
    Mac OS X

    Of course, both are somewhat more successful than the HURD...

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  48. Re:Slow progress annoys by Bishop · · Score: 3, Informative

    Linux kernel has taken off in a very short time (about 10 years).

    Try two years maybe less. Seriously. People were doing real work in a Linux environment running the version 0.99.x kernels which were release in 1993. Linux ran X, vi, emacs, and the GNU tools. For a lot of acedemics on a limited budget this was more then enough.

  49. Re:The Hurd by paladin_tom · · Score: 5, Insightful

    People can use GNU/Linux. You don't use the kernel (as an end-user), you use your applications.

    I think we've got a best-of-both worlds situation here: in the meantime, we've got a very good monolithic kernel (Linux), and we've got a nice multi-server in the works (Hurd), for when the time comes when monolithic kernels just can't cut it anymore.

    And regarding your statement, "It doesn't matter if you are theorectially advanced.", that's a load of BS. If no one is innovating, technology stagnates. What we're seeing here is the price of innovation. And if Free/Open Source isn't willing to do this, then we'll deserve the criticism that we're just ripping off proprietary software.

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  50. Re:The Hurd by paladin_tom · · Score: 3, Interesting

    The thing is, though, that they're still talking about it, and haven't been able to actually do anything with it.

    Haven't been able to do anything with it? Buddy, I've got a GNU/Hurd box running at my university. It's not vapourware. And it's rapidly making progress.

    don't expect me to get all hot and bothered because the design is different in some exciting but arcane way.

    I don't call microkernel architecture "arcane." I'm not satisfied with the long-term potential of monolithic kernels, hence I support the Hurd.

    Actually, IBM is getting all hot and bothered by this stuff. They're financing the development of SawMill, a multi-server version of Linux running on top of the L4 microkernel. This stuff is the future.

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  51. You don't need a big hard drive to install Debian by MichaelCrawford · · Score: 4, Insightful
    My understanding is that Hurd works reasonably well for the hardware it's designed for. And you don't need that big a hard drive to install Debian. I have the PowerPC port of Debian on my Macintosh, and everything including /home is on a single 2 GB hard drive. The largest partition is 834 MB, well under Hurd's limit if I were to install Hurd instead.

    I think everyone here is being pretty unfair to Hurd and RMS's efforts. Hurd can easily do all kinds of stuff you'll never get Linux to be able to do, like allow unpriviliged users to mount filesystems in their home directories without causing problems for security, allowing ordinary users to hack the kernel without breaking security and so on.

    All of this has been a major advancement in computer science, and they simply haven't needed things like large partitions that of course would be needed for widespread acceptance. I simply don't see it as a big deal that they've taken so long to add the features needed for an end-user, because they had to take a long time to write the architectural underpinnings that are miles beyond Linux.

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  52. Re:GNU/Hurd by Twirlip+of+the+Mists · · Score: 5, Informative
    Oh, dude, you pretty much stuck your foot in it here. As evidence that Torvalds gave Stallman permission to use the name "GNU/Linux," you cited this article. Did you read it? Here's the salient portion.
    HY: About the GNU/Linux argument; have you talked with Richard Stallman about this?

    Linus: rms asked me if I minded the name before starting to use it, and I said "go ahead".
    Sounds good, right? But the thing is, it didn't stop there. Torvalds goes on:
    I didn't think it would explode into the large discussion it resulted in, and I also thought that rms would only use it for the specific release of Linux that the FSF was working on rather than "every" Linux system.

    I never felt that the naming issue was all that important, but I was obviously wrong judging by how many people felt very strongly about it. So these days I just tell people to call it just plain "Linux" and nothing more.
    (Emphasis mine.)

    So Torvalds, who has exclusive control over the name "Linux," as used to describe computer operating system software, initially granted permission for the use of the name "GNU/Linux," but he and Stallman had different ideas of how that variation on the "Linux" trademark was to be used. In this interview, Torvalds makes it clear that he does not approve of the use of the mark "GNU/Linux" to describe "'every' Linux system." Consequently, the name "GNU/Linux" is an infringement on Torvalds's trademark.

    If you want to call the operating system "Foonix," you're free to do so. You can call it whatever you want-- to the extent that you don't violate anybody's copyright. But you can't dilute or otherwise distort the trademark "Linux" without permission, which Torvalds explicitly denied in that interview.

    Thanks for pointing out that article. It makes the issue even more crystal-clear to me.
    --

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  53. You don't understand Mr.Stallman's reasons at all. by Inoshiro · · Score: 4, Informative

    You're totally misinterpretting Mr. Stallman's beliefs about naming.

    The free operating environment he has been trying to create for 20 years is called GNU. This encompases a kernel, userland, system libraries, compilers, etc. It's a whole, big lot of work. They started out with the editors, a C library, and a compiler so they could write the rest, and they went very far. GNU userlands started to supplant the traditional ones on most UNIX machines because GNU applications were full featured and matured quickly (try the BSD userland sometime, you'll start to notice missing options quickly), and because they were open and free.

    But their kernel, the Hurd, lagged in development. Linus took the amazing GNU userland and added his Linux kernel. The GNU/Linux system was born, a fusion of the GNU userland and the Linux kernel. Mr. Stallman believes than Linus deserves much credit for bringing a free kernel into the world (remember, it was released when BSD was dealing with much legal ramblings), and that's why it's listed as a part of the name (and not just included in the name "GNU").

    A modular layer deep in the kernel which can be swapped at will is not really relevant to it. You could ask why XFree86 is not in the name of GNU/Linux, and you'll be told it's because only the GNU and Linux parts were designed towards the goal of a free system. XFree86 is just a reference version of X11R6 which runs on x86 (and other) hardware. The same can be said of Mach, it's just a reference implementation of some software.

    GNU is the only operating environment designed to be free as in freedom from the very start, which is why Mr. Stallman asks that you properly credit the GNU contributors for their many man-centuries of effort.

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  54. Re:GNU/Hurd by amccall · · Score: 4, Interesting
    The Intel guys got Linux compiling on their compiler several months ago. Look it up. The patch was small, and it should already be in development kernels.

    So, replacement for gcc, replacement for libc(bsd/other libc's mentioned), replacement for all other standard unix utilities.

    As a side note several other OS projects use the GNU compiler to create their binaries. Should the be called GNU/Projects as well, even though they use few if any other GNU components? And I thought GNU and the FSF was about freedom....

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  55. Re:The Hurd by ealar+dlanvuli · · Score: 4, Funny

    Come on, once the Hurd is finished, GNU/Hurd will be years ahead of GNU/Linux, Windows NT, or Mac OSX

    And all of those operating systems will be years ahead of themselves....

    --
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  56. If you can't say something nice... by Ageless · · Score: 5, Funny

    [this space intentionally left blank]

  57. Re:Solution in search of a problem? by peter · · Score: 3, Insightful

    > in theory the more elgant design should bring performance increases,

    Stupid need-for-portability, making everything slow :(

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  58. Re:You don't understand Mr.Stallman's reasons at a by Arandir · · Score: 3, Insightful

    It's taken me a few years to understand RMS' perspective on the issue. But just because I can understand it does not make it right.

    From his viewpoint, linux was merely dropped into The GNU System. But from the perspective of the rest of the world, Linus made an OS and a the Linux distributions added a bunch of userland stuff from different projects, GNU being a major supplier.

    To use an analogy, Linus built an internal combustion engine, then his friends when to the local AutoParts and built a car. The name of the completed vehicle is not AutoParts/Linux.

    If you take a look from any perspective but Mr. Stallman's, a heck of a lot of GNU was adjusted to fit the Linux kernel. Linux was not adjusted to fit GNU. Just browse through the glibc ChangeLog for proof.

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  59. Re:You don't understand Mr.Stallman's reasons at a by IvyMike · · Score: 3, Insightful

    You're totally misinterpretting Mr. Stallman's beliefs about naming.

    Probably.

    A modular layer deep in the kernel which can be swapped at will is not really relevant to it.

    "Swapped at will?" Not to put to fine a point on it, but this is in an article about the Hurd being delayed an indeterminate amount of time due to just such a swap.

    You could ask why XFree86 is not in the name of GNU/Linux, and you'll be told it's because only the GNU and Linux parts were designed towards the goal of a free system.

    1) I really don't believe those were the only parts developed towards the goal of a free system, so I suspect I must be misinterpreting your point, and 2) I would suspect I would really be told that you can have a perfectly reasonable Gnu/Linux system without XFree86. The GNU/Linux FAQ seems to imply it's really a matter of giving credit for effort, and not a matter of the philospohical goals.

    GNU is the only operating environment designed to be free as in freedom from the very start, which is why Mr. Stallman asks that you properly credit the GNU contributors for their many man-centuries of effort.

    Doesn't follow. Mach sure seems like it's free (and thus Hurd can use it), and it seems necessary to enabling the Hurd to exist. I still don't see why the efforts of the developers deserve any less credit for their man-years of effort towards making Hurd possible.

    I'm not trying to be arbitrary here; I don't know all the issues, and I didn't know about the planned port to a different microkernel, but it seems like the current Hurd owes a lot of credit to the existence of Mach, in a way simliar to the way Linux-based OSes owes a huge amount of credit to the existence of GNU.

  60. None of you so called geeks get it. by slashdot_commentator · · Score: 5, Insightful


    HURD is not the operating system choice of "hackers" or slashdotters. Hackers want to run computer applications (reliably and speedily). That is not what HURD is about. Its the utopian platform for computer science geeks; people who want to go beyond the current paradigm of UNIX, classic sequential computing, etc. . By abstracting the ukernel to a couple of critical operations (time slicing, memory allocation, and IPC), and moving every other operation to user mode, you have a tool that can be used to implement new concepts in computer operating systems.

    Its not an alternative to Linux. Its an orange to Linux's apple. It will suck as an alternative to Linux. It will run slower than Linux (especially if they stick with Mach). It will not run more stablely than Linux (given its increased complexity). It may be a better platform for multiple CPU configurations, be we won't know that for sure until its ukernel design is complete, and an implementation of HURD actually proves it to be faster. Very few people will want to port useful packages to HURD; they'll go to Linux for reliability and performance. HURD's purpose is not a platform to run applications. Its a platform for computer science research.

    That is the reason why I do not wish death on HURD and rejoice when there is good news for it. It does not really compete with Linux for mindshare. If it proves to be a superior platform for MP processing, only then will it have a mundane use.

    I have massive contempt for its project management. Its currently looking like the OS that will never get released. And it does not deserve a serious look until it gets a quality ukernel, like L4 (which itself is unfinished). MACH will not cut it, or its UKS(?) version.

    --
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  61. OpenBEOS by Abnormal+Coward · · Score: 3, Funny

    At this rate, the OpenBEOS team will have the entire OS rewritten before the hurd kenel gets to version 1.0 :).

  62. Re:Delayed??? by Zeinfeld · · Score: 3, Interesting
    I actually watched Stallman speak in Montreal recently. One interesting tidbit was that he still seems dumbfounded about the fact that the Linux kernel beat them into production even though one of the advantages of microkernel is supposed to be ease of design and the fact that mach had half of the work done already.

    I have to think that the Hurd is a case of following the fashion rather than evaluating the microkernel technology on its merits.

    There are lots of folk out there who will blather on at great length about the merits of kernel design for absolutely no other reason than they think it makes them look clever.

    I have not done anything at the O/S level since writing one ten years ago (unless you count the Web as an O/S). At that time Mach was flavor of the month because OSF and Next had used it as the basis of their operating system and Cutler had used a lot of the concepts of Mach to design his follow on operating system to VMS. Then Rashid joined Cutler at Microsoft in a very high profile move.

    So yes microkernels were flavor of the month ten years ago. However the reason why they were flavor of the month had more to do with the politics and problems at the time.

    OSF was trying to build a kernel quickly to compete with System V. Microsoft was building Windows NT to get to market as fast as possible. Microkernels were touted as the equivalent of RISC in CPUs, a design that allowed for shorter development time and hence faster to market.

    Microsoft had another issue, they wanted to be able to emulate other O/S. In particular Posix so they could sell in the federal market. They also wanted to be able to migrate VMS to run on WNT at a later date as a subsystem. This is actually in the works now and will take place when HP transitions from Alpha to Itanium on the high end server line. One of the reasons Microsoft was keen to do this is that Cutler and his principal staff had left Dec after Dec cancelled the Prism project, Cutler's objective stated at the time was to make Dec have to pay for the O/S they could have had for free. At the time Dec was bigger than Microsoft.

    There are advantages to microkernels, but the NT design has not been pure microkernel for some time. In order to get acceptable performance on early hardware they had to allow the display drivers to run in kernel mode.

    The problem that I think will prevent HURD ever working is that to build a real O/S you have to really understand the reasons behind the principles you follow and break them when necessary. RMS is unfortunately a prisoner of many dogmatic beliefs which once fixed he simply will not abandon regardless of the evidence.

    Linus may or may not have known what he was doing when he had the argument with Andy Tannenbaum, but he made the right decision. Andy has written a lot of good books that are widely used as text books, I don't know if people like Cutler, Rashid, Hoare and Co would rate him as being in the front rank. It is the same situation in most fields, everyone has heard of Bruce Schneier, fewer have heard of Ron Rivest and only people in the field tend to know names like Paul Kocher (SSL 3.0, the one that works), Butler Lampson (ACLS, lotsa stuff), Clark (end to end principle), Bellovin (firewalls), Schiller (IETF Security Area director).

    Oftopic: Mark Goldston, CEO of United Online (Juno/blue light) is a clueless dweeb, he just tried to tell Mark Haynes on CNBC that cable modem router boxes are not a threat to his business as few people can afford them... Not only are WiFi cable routers $100 at frys they will be built into the cable modems soon. So either he is uninformed (unlikely) or another lying CEO.

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  63. Glad you noticed!!! by 3seas · · Score: 3, Interesting

    How many commenting would have never noticed any delay had they not read it here?

    Regardless of any negativity being expressed here towards the efforts of the Hurd Developers or the goal, this is a project that needs to be done.

    I have no doubt that had Linux not come along, there would have been more man power and efforts put into the Hurd these past years.

    Of course Linux was a distraction for many, yet it was also NOT a distructive distraction. Alot of GNU and GPL software has been developed and put into use. Enough So that, as we all know, MS has taken notice and has even launched a competitive campagin against not just Open Sourse, Linux and GNU, but with a focus on the GPL.

    What software there has been made to run on Linux, can and probably already has been ported to run on the Hurd....(except for a few packages that just don't make sence to port as they deal with monolithic kernel issuse that don't exist in the Hurd). The count of software packages ported is in the thousands.

    Even the drivers written for Linux are usable on the Hurd.

    All of that porting and compatability was/is alot of work for which the Hurd Development team has done. So there has been energies going into alot more than just the hurd core.

    Perhaps the really good part of all this is that MS probably doesn't have a clue as to what to expect of developer who will develop applications for the Hurd, to take advantage of the hurd. And it should be understood that the hurd opens the door up a lot more for development innovations.

    So what will you have when the Hurd is officially publicly released... production version...??

    You will have what appears to be no or very little different than using Linux. On the surface. But under the hood.... It's a more versatile, stable and in sum of.... overall more powerful in ability to bring about advancements.

    There are quite a few other OS's being developed today, under the open source idea. And there is nothing about the Hurd that says you cannot attach a personal choice smart user space interface OS to the Hurd. Integrating it to benefit from the security of the Hurd, the GNU number crunching software already written, etc... thru the IPC of the Hurd....

    I like the idea of plugging my personal Smart Interface OS into a hurd system for such benefits. A 3" CD, a smart card, or some yet to be developed re-writable device I can take with me.

    1. Re:Glad you noticed!!! by iggymanz · · Score: 3, Insightful

      I have no doubt that had Linux not come along, there would have been more man power and efforts put into the Hurd these past years.

      Really, this is getting to be too much.....after over a decade of floundering around, the FSF has yet to produce anything even remotely useful as a production operating system kernel. Linus and the people who worked on Linux did that in 7 - 8 years.

      It's great what the FSF has done, to give the world a compiler to produce free software, and the tools and utilities to make Linux and other OS's a finished OS. And even the Hurd as a computer science experimental kernel to play with new ideas.

      But it is ridiculous to say that Linux has distracted from the Hurd effort....the Hurd simply is not about designing a useful kernel.....it is a playground for ideas in OS architecture, and it will be many more years of flounder/play/redesign before it is known what ideas in there will even be useful for a production kernel,

  64. RMS by thoolihan · · Score: 5, Interesting

    I'm sure I will get flamed on /. for this one, but since 98% of the comments are along the lines of "down with RMS", I have to say this.

    At some point you have to decide if you are going to go along with the pithy flames or do real research. It's not popular, but it reveals the truth. If not, go to the next comment, this isn't for you.

    From a proctical standpoint, I understand the "Linux" side of the argument. However, people make that argument with statemnt like... "Don't do drugs, you'll end up like the Hurd peopl" - LT. RMS makes his argument respectfully on the GNU website and encourages people to use GNU/Linux. On the GNU site, he says the easiest and best way to start using free software is to go get a GNU/Linux distro. Personally, I respect people who make their arguments with facts instead of one-liners. If you buy things because they sound like a good quick answer, then you start going for things like "trusted computing".

    Finally, since this is a discussion of the HURD kernel: I think people should find this interesting. The GNU tools we are already familiar with are going to get a microkernel. Merit arguments aside, there are a lot of people who choose/like microkernels (apple, *BSD). Also, it's a kernel project that offers a ton of work to be done. After all, 1GB partitions is a sign that there is a long way to go. Entry level kernel hacking on a system that has a LONG way to go is easier than "even though you've never kernel hacked, figure out how to save a few cycles with this kernel module that has been working for five years". Also, keep in mind, the HURD has one major advantage over the Linux kernel. There is not a one man bottle neck.

    Personally, I like the linux kernel and use several Gentoo systems, and some OpenBSD. But I always welcome another choice in software and look forward to seeing the HURD in a more usable state.


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