and to give you some numbers - ive seen 90+ megs/sec (thats bytes) sustained transfers from a Sun A5000 series FCAL RAID array with fibrechannel cards using RAID 5. Suns hardware cards have 256MB on controller cache per fibrechannel card. most good arrays will come with fiber channel interfaces to the disks and to the host systems.
Instead of the ONE HUGE SERVER model where your huge server usually gets reduced to a really big 386SX-16 under heavy loads i'd recommend using a huge server to rsync files to smaller machines which act as local caches. In general, use only 15 or so clients per NFS server. i've seen origin 2000s literally die from NFS serving to large numbers of clients (and these were 192CPU origins). Usually the best way IMHO is to do this : connect small clusters of clients via NFS to cheapo SCSI based PCs (can be dual proc) with (say) 40GB HDDs running (insert favourite free nix). Use rsync to transfer from your huge server to those little boxes when a file request comes in and let the little box act as a temporary file cache effectively. delete files when the little boxes become full. for writing, simply reverse the process. A few shell scripts should do it.
umm...nope. most vendors such as Dell have had a policy on returns. if you return the OS you must return THE WHOLE MACHINE. They usually treat it as one big component. How would they restock it if every linux user returned his/her copy of winxx ? the manufacturers dont want bits of their machines sitting around in a big warehouse...unsold.
the candy wrappers story got pulled. its a AP link - gets deleted in 1 week. heres the story in brief. sorry for the bad formatting and potential spam...i just copied and pasted it : ATLANTA (AP) -- Scientists have figured out why candy wrappers are so noisy when opened in a quiet theater, no matter how slowly or deliberately they are unwrapped.
The sound is caused by the pops and clicks as creases in the packaging material are pulled apart, and there is very little a theatergoer can do to decrease the loudness of those sounds, according to Eric Kramer, a physicist from Simon's Rock College of Bard in Great Barrington, Massachusetts.
Opening the wrapper slowly merely spreads out the pops and clicks. It doesn't make them softer.
The study was released this week in Atlanta at a meeting of the Acoustical Society.
Kramer and Alexander Lobkovsky of the National Institute of Standards and Technology in Gaithersburg, Maryland, studied the sound waves from unwrapping candy wrappers.
The noise could be decreased with different wrapping materials. But for now, candy wrappers are going to make noise no matter how they are opened, Kramer concluded.
His suggestion for movie-goers craving candy: Open it as quickly as possible and get it over with.
ground the ATX PSU via the 3 wire connector, you also need to ground the mobo via the small electrically conductive holes drilled thru it..the mounting screw holes....they usually are surrounded by metal rings. attach that to a thin sheet of metal and ground that. thats usually more than enough. HDDs/CDROMs etc dont need to be grounded. ive seen ATX PSU leak current inspite of the 3 wire system..so make sure the physical metal enclosure of the PSU is grounded too.
actually i got way over 90megs/sec SUSTAINED. yup. you read that right. config : Sun A5200 fibre channel disk array 18GB x 8 FC drives. Sun A5000 series machine with 8 x 450MHz ultrasparc-iis, 2 x 256MB cache FCAL cards. 4 x 1 GB ethernet cards (1000BT). cost : if you have to ask.....you cant afford it.
bleh. it gets boring after a while. the first time was fun then the 2 minute ride down with chute open becomes boring. it didnt even scare me the first time...although it should have. i pulled too soon and nearly broke my leg.:)
heh. i'll prolly get modded down for this but i have to say it - switch to Java or C. that C++ stuff fries your brain...im much happier with java/c/modula-2 than C++. of course if you *have* to do C++ - a walk usually helps.:)
yup. thats one reason why we need the equivalent of digital cash. simply pay a fixed sum to a local store like a phone card and get (say) $100 is digi cash. then use the digi cash card like a credit card online. if it runs out - throw it away and start again. we also need a subscription model for music - pay something nominal/mo and download ANY song from any artist upto a max of (say) 300 songs/mo. i'd pay for that too.
yes java is a proper language. its about the same as C, BASIC, C++, Modula, Smalltalk or any other language. it allows you to compile programs and execute them. all languages which do that can be defined as languages. how is java similar to C++ ? how are my arguments idiotic ? or are you just whining for the sake of whining ? For the clueless : 1] Smashing stackguard : http://phrack.infonexus.com/search.phtml?view&ar ticle=p56-5 2] Buffer overflowing C++ : http://phrack.infonexus.com/search.phtml?view&ar ticle=p56-8 3] Even more Buffer overflows with *safe* C calls : http://phrack.infonexus.com/search.phtml?view&ar ticle=p56-14
Yup. all from the guys who brought you phrack. i may not be an expert but IMHO, if there is anything better than sandboxes/rules and VMs for providing security in a language, ive never seen it. Java can provide all 3. And no, im not looking for a job. thanks.
UNIX has been designed to do this...but only for programmers. ever notice that most UNIX command are only two letters ? ever notice that the UNIX mentoring system (and man pages) are built to increase the level at which the user uses the system ?
I normally code in Java..but for Linux/UNIX coding you *have* to use C. why ? because C doesnt require overhead (support files for VMs etc like Java). C programs are standalone. C can be recompiled for any architecture. C is FAST. C is SMALL. C can use 100% of your CPU and memory without bothering about overhead. C can manipulate strings faster than any other language. Allocation of arrays and storage space in C is trivial. Looping thru arrays is blazingly fast. C has curses based screen manipulation. C can have inline assembly for those REALLY tight ops. In short - Performance, Portability, Control, Simplicity.
stackguard cant protect ALL code and you can get around it. its a hack. a proper language like Java has bounds checking. it IS a fault of the language..no matter how much you may argue, a sandboxed virtual machine with garbage collector and bounds checking built in IS the right approach...even if speed is lost as a result.
newer powerpoints do save as PNG files so the bandwidth requirements do go down. powerpoint is a graphical tool...you cant help it since its main focus is splashy graphics at presentations. BTW, anyone know what happened to the old format from powerpoint97 ? the new powerpoint 2k doesnt have the good old big image with rectangular 3d buttons underneath like the old one had.
TRG may use DRAM but 3COM uses PSRAM. see http://www.trgnet.com/Palm/TechSupport/3comfaq.htm #f i have a palmpilot standard running PSRAM..ive looked at the memory chips on the board. PSRAM is a lot better than DRAM.
bah. all of us old timers know the best anti-UNIX jokes come from the guys who wrote UNIX . including a foreword by none other than dennis ritchie himself.:)
yup. thats what i thought too. of course, saturn Vs engines produced as much thrust as a small nuclear weapon detonating. if you use rockets, you have high energy densities...250GW isnt too much for a solid rocket booster.
Re:Groupthink? Yes! Here's how it happened...
on
The Myth Of The Borg
·
· Score: 1
heh. well said. and really true as well. if you look at HP, SGI, IBM or any other large company you can see the same effect. HPs products always have a printer like focus (dedicated hardware, simple logic, printer like look and feel) even if its an offshoot of HP (like agilent). SGI always has a high powered visual look and feel (brute force high bandwidth busses focused on graphics, nice looking cases and presentation on the outside of the box). IBM has a "big blue" look and feel (we are huge, therefore all our projects will be huge, we always deliver huge scalable stuff and we never miss a deadline -- but we charge a shitload).
actually they would. if the FBI wants to tap into the mail of a suspect they stop mail at the local post office and go thru looking for your mail. that means EVERYONES mail for blocks around. thats really the only way they can intercept it without you knowing about it. did you really think they'd go thru your mailbox only ?
Slashdot Mirror
and to give you some numbers - ive seen 90+ megs/sec (thats bytes) sustained transfers from a Sun A5000 series FCAL RAID array with fibrechannel cards using RAID 5. Suns hardware cards have 256MB on controller cache per fibrechannel card. most good arrays will come with fiber channel interfaces to the disks and to the host systems.
Instead of the ONE HUGE SERVER model where your huge server usually gets reduced to a really big 386SX-16 under heavy loads i'd recommend using a huge server to rsync files to smaller machines which act as local caches. In general, use only 15 or so clients per NFS server. i've seen origin 2000s literally die from NFS serving to large numbers of clients (and these were 192CPU origins). Usually the best way IMHO is to do this : connect small clusters of clients via NFS to cheapo SCSI based PCs (can be dual proc) with (say) 40GB HDDs running (insert favourite free nix). Use rsync to transfer from your huge server to those little boxes when a file request comes in and let the little box act as a temporary file cache effectively. delete files when the little boxes become full. for writing, simply reverse the process. A few shell scripts should do it.
umm...nope. most vendors such as Dell have had a policy on returns. if you return the OS you must return THE WHOLE MACHINE. They usually treat it as one big component. How would they restock it if every linux user returned his/her copy of winxx ? the manufacturers dont want bits of their machines sitting around in a big warehouse...unsold.
the candy wrappers story got pulled. its a AP link - gets deleted in 1 week.
heres the story in brief. sorry for the bad formatting and potential spam...i just copied and pasted it :
ATLANTA (AP) -- Scientists have
figured out why candy wrappers are so
noisy when opened in a quiet theater, no
matter how slowly or deliberately they
are unwrapped.
The sound is caused by the pops and
clicks as creases in the packaging
material are pulled apart, and there is very little a theatergoer can do to decrease
the loudness of those sounds, according to Eric Kramer, a physicist from
Simon's Rock College of Bard in Great Barrington, Massachusetts.
Opening the wrapper slowly merely spreads out the pops and clicks. It doesn't
make them softer.
The study was released this week in Atlanta at a meeting of the Acoustical
Society.
Kramer and Alexander Lobkovsky of the National Institute of Standards and
Technology in Gaithersburg, Maryland, studied the sound waves from
unwrapping candy wrappers.
The noise could be decreased with different wrapping materials. But for now,
candy wrappers are going to make noise no matter how they are opened, Kramer
concluded.
His suggestion for movie-goers craving candy: Open it as quickly as possible and
get it over with.
no. it looks like it got pulled. if you go one link down, you can see the directories and theres only one story about blueberry farms.
ground the ATX PSU via the 3 wire connector, you also need to ground the mobo via the small electrically conductive holes drilled thru it..the mounting screw holes....they usually are surrounded by metal rings. attach that to a thin sheet of metal and ground that. thats usually more than enough. HDDs/CDROMs etc dont need to be grounded. ive seen ATX PSU leak current inspite of the 3 wire system..so make sure the physical metal enclosure of the PSU is grounded too.
actually i got way over 90megs/sec SUSTAINED. yup. you read that right.
config :
Sun A5200 fibre channel disk array
18GB x 8 FC drives.
Sun A5000 series machine with 8 x 450MHz ultrasparc-iis, 2 x 256MB cache FCAL cards.
4 x 1 GB ethernet cards (1000BT).
cost : if you have to ask.....you cant afford it.
bleh. it gets boring after a while. the first time was fun then the 2 minute ride down with chute open becomes boring. it didnt even scare me the first time...although it should have. i pulled too soon and nearly broke my leg. :)
heh. i'll prolly get modded down for this but i have to say it - switch to Java or C. that C++ stuff fries your brain...im much happier with java/c/modula-2 than C++. of course if you *have* to do C++ - a walk usually helps. :)
yup. thats one reason why we need the equivalent of digital cash. simply pay a fixed sum to a local store like a phone card and get (say) $100 is digi cash. then use the digi cash card like a credit card online. if it runs out - throw it away and start again. we also need a subscription model for music - pay something nominal/mo and download ANY song from any artist upto a max of (say) 300 songs/mo. i'd pay for that too.
yes java is a proper language. its about the same as C, BASIC, C++, Modula, Smalltalk or any other language. it allows you to compile programs and execute them. all languages which do that can be defined as languages. how is java similar to C++ ? how are my arguments idiotic ? or are you just whining for the sake of whining ?r ticle=p56-5 r ticle=p56-8 r ticle=p56-14
For the clueless :
1] Smashing stackguard :
http://phrack.infonexus.com/search.phtml?view&a
2] Buffer overflowing C++ :
http://phrack.infonexus.com/search.phtml?view&a
3] Even more Buffer overflows with *safe* C calls :
http://phrack.infonexus.com/search.phtml?view&a
Yup. all from the guys who brought you phrack. i may not be an expert but IMHO, if there is anything better than sandboxes/rules and VMs for providing security in a language, ive never seen it. Java can provide all 3.
And no, im not looking for a job. thanks.
UNIX has been designed to do this...but only for programmers. ever notice that most UNIX command are only two letters ? ever notice that the UNIX mentoring system (and man pages) are built to increase the level at which the user uses the system ?
I normally code in Java..but for Linux/UNIX coding you *have* to use C. why ? because C doesnt require overhead (support files for VMs etc like Java). C programs are standalone. C can be recompiled for any architecture. C is FAST. C is SMALL. C can use 100% of your CPU and memory without bothering about overhead. C can manipulate strings faster than any other language. Allocation of arrays and storage space in C is trivial. Looping thru arrays is blazingly fast. C has curses based screen manipulation. C can have inline assembly for those REALLY tight ops.
In short - Performance, Portability, Control, Simplicity.
stackguard cant protect ALL code and you can get around it. its a hack. a proper language like Java has bounds checking. it IS a fault of the language..no matter how much you may argue, a sandboxed virtual machine with garbage collector and bounds checking built in IS the right approach...even if speed is lost as a result.
newer powerpoints do save as PNG files so the bandwidth requirements do go down. powerpoint is a graphical tool...you cant help it since its main focus is splashy graphics at presentations. BTW, anyone know what happened to the old format from powerpoint97 ? the new powerpoint 2k doesnt have the good old big image with rectangular 3d buttons underneath like the old one had.
TRG may use DRAM but 3COM uses PSRAM. see http://www.trgnet.com/Palm/TechSupport/3comfaq.htm #f
i have a palmpilot standard running PSRAM..ive looked at the memory chips on the board. PSRAM is a lot better than DRAM.
bah. all of us old timers know the best anti-UNIX jokes come from the guys who wrote UNIX . including a foreword by none other than dennis ritchie himself. :)
has more on the freewwweb thing. fuckedcompany.com also makes for some interesting reading.
err...the palm uses PSRAM or psuedo static RAM. its does NOT use DRAM. if it did use DRAM there is NO WAY the refresh rate would be once a minute.
yup. thats what i thought too. of course, saturn Vs engines produced as much thrust as a small nuclear weapon detonating. if you use rockets, you have high energy densities...250GW isnt too much for a solid rocket booster.
heh. well said. and really true as well. if you look at HP, SGI, IBM or any other large company you can see the same effect. HPs products always have a printer like focus (dedicated hardware, simple logic, printer like look and feel) even if its an offshoot of HP (like agilent). SGI always has a high powered visual look and feel (brute force high bandwidth busses focused on graphics, nice looking cases and presentation on the outside of the box). IBM has a "big blue" look and feel (we are huge, therefore all our projects will be huge, we always deliver huge scalable stuff and we never miss a deadline -- but we charge a shitload).
and thats what i did : http://www.freebsd.org/cgi/query-pr.cgi?pr=20069
yup. i cant find anything about me either. luckily these companies dont seem to have access to gas/electricity bills, DMV recorde etc.
actually they would. if the FBI wants to tap into the mail of a suspect they stop mail at the local post office and go thru looking for your mail. that means EVERYONES mail for blocks around. thats really the only way they can intercept it without you knowing about it. did you really think they'd go thru your mailbox only ?
yeah BSD bigots - mark me as a troll because i found a bug in your oh so wonderful OS.