MFC: The process of backporting a feature from -CURRENT (the development branch of FreeBSD) to -STABLE (the stable branch, natch). It's an acronym for "Merged From Current"
Giants: In the old FreeBSD (4.x and before) locking (for mutexes) was handled by a single lock (over the entire kernel). Naturally this is unacceptable for SMP systems and one of the big reasons FreeBSD lacks in the SMP arena. John Baldwin is currently working his patoot off trying to get fine grained locking in the kernel to get rid of Giant.
Interestingly enough, zmodem is terrible for high latency satellite links. Zmodem is designed for phone line connections where each frame (I can't remember exactly what they're called unfortunatly) can be ACKed before the next one is sent. When you have latencies approaching 2 seconds, waiting for those ACKs will kill you.
IIRC, kermit performs admirably over satellite links though.
Yeah, by the time D.net finishes decoding the trailers you should be able to pick up the DVDs of the movie cheap, especially considering how the sun would be pretty much burnt out by that point.
Jul 31 08:53:59: ad4s1 bn 76293856; cn 8073 tn 63 sn 37 -- Fallback to PIO mode
Jun 2 03:30:00: ad4s1 bn 76389888; cn 8083 tn 87 sn 57
Jun 2 03:30:02: ad4s1 bn 76389904; cn 8083 tn 88 sn 10
Jun 2 03:30:02: ad4s1 bn 76389920; cn 8083 tn 88 sn 26
Jun 2 03:30:02: ad4s1 bn 76389920; cn 8083 tn 88 sn 26 -- Fallback to PIO mode
Unfortunatly PIO mode is unacceptable, so we always bump the drive back up to UDMA100 mode when it does that. This isn't comprehensive, but it is all of the instances we still have in the logs. Notice that the failure blocks are always near the end of the disk (I think...the math is a little weird at times with all of the funky drive/controller modes).
I can't wait until someone tries to back up their 75GB drive on 1.44MB floppies. By my estimation that's only 53,333 floppies. Given how slow floppy drive transfers are (150kB/sec), your floppies would degrade before you finished your inital backup.
I also can't wait to pay more for the DAT drive than I'd pay just to buy another harddrive and mirror it.
Zip drives are only a minor step up from floppies, and you'd end up spending $7500 on the zip disks alone! BTW, the Click-of-death is widly overblown IMHO. Unless you happened to get one of those defective drives or you play rugby with your zip drive the media isn't going to fail any faster than a floppy (although that's not exactly a ringing endorsement)
At least CD-R (or even CR-RW) is fairly viable, if a little harder to automate (you can't just tar the files to a device).
There was some rumbling on Storage Review that these drives may just be too fast for their electronics, and once you start filling up the outer sectors on the disk you will start getting errors. My friend has a pair of the 45GB 75XPs, and at least one of them has "issues". Every so often (now that the drive is full) the kernel will spit out:
ad4s1g: hard error reading fsbn 76293856 of 26874736-26874751 (ad4s1 bn 76293856; cn 8073 tn 63 sn 37)
followed by:
ad4: DMA problem fallback to PIO mode
So far the 60GXPs that I use have had no problems (knock on wood). I've seen at least once source that suggests that the 45GB versions of this drive are the most suseptable to having this problem. I suspect there was some poor quality control on these drives and some very marginal hardware was released onto the world (bad IBM, bad!), but that's more of a feeling since I don't have much evidence to support the claim.
Maybe they just don't want to give up the sweet heaven that is a good command line ftp client.
Personally, I've never found a graphical FTP client that completely suits my needs yet anyway (and not for lack of trying!), so I'm not surprised that your teacher has the same problem.
Re:what's the difference?
on
VIM 6.0 is Out
·
· Score: 2
Huh? I've just tried out giving vim a CTRL+X+C combo in insert, command, and visual modes and none of them locked the app.
Command Mode: Just beeps at me twice
Insert mode: First tries to go to ^X mode, but then cancels back out to command mode
Visual mode: beeps then cancels back to command mode
I thought of Cochran as sort of like "rocketguy" today. Probably the technology for warp travel was several years old by that point, but all of the worlds governments were too busy with their own problems to bother with scientific exploration.
I also think warp drives are actually fairly simple devices fundimentally (almost all things are), but it gets more complicated as time goes on. Go to an old car show some day and look at the really old engines and compare it to a modern car engine.
That said, I don't think it was completely unbelievable that a determined person (along with a few assistants and a metric buttload of money) couldn't get a warp drive retrofitted on a missile. At least it's no more unbelievable than a guy building something like a rocket in his backyard to shoot himself into the stratosphere.
Ebay seems like a poor choice for stenography. First off, you have to actually sell something to get a picture on Ebay (IIRC), and I doubt the terrorists are going to want to bother with having buyers on their back all the time.
It seems to me like it would be much easier just to set up some random Geocities site with text like:
Hi, I'm Lisa Smith and this is my site about me and my 10 cats!
Then include several pictures of 10 different cats, including some with covert information. If you need new information you can reencode some of the pictures and reupload them. Other messages can be sent by subtly changing the HTML (adding and deleting extra spaces for instance).
I still can't figure out why they thought the images would be one Ebay.
Yes, the extra $400 is worth it to let you forget to install the heatsink.
Granted the thermal protection is a pretty major oversight on AMDs part, but it's not the killer feature in my book. I consider low cost and performance to be the killer features of a processor.
My advice: Install a good heatsink correctly the first time and pocket the difference.
I imagine it was pretty hard to outsiders to believe that some amagamation of your various immeasurable qualities could be used as some sort of monetary system...
That exactly the kind of thing people generally don't want showing up on their monthly bills though.
$300 for a massage?!? I don't remember a massage...
Omo detergent is also a mediocre laundry detergent, and I think most people would rather prefer not dissolving their clothes if they accidentally set the knob on "hot".
Was that bike ever more than just vapor and lab prototypes?
Don't forget that there are a lot of ways a product can fail, and you can't rely on the inventer or marketer to give you the whole story. In fact the state reason that a product failed is usually not the real reason it failed in my experiance. Also, beware of one sided marketing, something can have all of the greatest features in the world, but if it kills you 1 out of every 10 times you use it, nobody is going to use it.
My only gripe with FreeBSD is the amount of documentation available. You pretty much have to work out most things for yourself, there aren't the sheer number of different HOWTOs available like there are with Linux.
One thing you should remember is FreeBSD is better about keeping their manpages up to date and useful. One of the things that drove me nuts with RedHat was the sheer lack of manpages for many of the commands and almost all of the drivers (try running man 4 pcm in FreeBSD and it will tell you all about the sound driver). FreeBSD doesn't have as many HOWTOs because it doesn't need them, the manual has all the information you need in many cases.
The Linuxulator is excellent. 95% of all Linux apps "just work". The only problems I've run into are with apps that require funky custom kernel modules to be loaded.
Besides, most Linux apps come with the source, so you can compile the native FreeBSD version instead. (which is what the ports tree is good for)
FreeBSD does have/proc, but it's just less featureful than Linuxes proc (and implemented differently).
I'm not sure if I'd call devfs "mature". Lots of FreeBSDers don't turn it on, so it doesn't get the kind of user testing that it should.
Is no hardware acceleration in the kernel a big deal? I always thought that was a giant hack. My FreeBSD machine does have 3D acceleration with my Matrox G200 (it's still does the job).
Just so people don't get the wrong idea, FreeBSD doesn't have ALSA support, but it does have it's own sound drivers (newpcm) that work ok and are voxware compatable.
Conservative is a good word for the FreeBSD project. They don't like instability, and they're willing to give up cutting edge technology support to get it. To be fair, most of the developers are aiming at the ISP and server markets where crashes are completely unacceptable and having 3D acceleration code in the kernel is considered a liability rather than a feature. Still, that doesn't prevent people from using FreeBSD on the desktop, where it actually does a pretty good job IMHO.
Slashdot Mirror
There's nothing like irrational fear to promote progress of mankind!
MFC: The process of backporting a feature from -CURRENT (the development branch of FreeBSD) to -STABLE (the stable branch, natch). It's an acronym for "Merged From Current"
Giants: In the old FreeBSD (4.x and before) locking (for mutexes) was handled by a single lock (over the entire kernel). Naturally this is unacceptable for SMP systems and one of the big reasons FreeBSD lacks in the SMP arena. John Baldwin is currently working his patoot off trying to get fine grained locking in the kernel to get rid of Giant.
Interestingly enough, zmodem is terrible for high latency satellite links. Zmodem is designed for phone line connections where each frame (I can't remember exactly what they're called unfortunatly) can be ACKed before the next one is sent. When you have latencies approaching 2 seconds, waiting for those ACKs will kill you.
IIRC, kermit performs admirably over satellite links though.
Yeah, by the time D.net finishes decoding the trailers you should be able to pick up the DVDs of the movie cheap, especially considering how the sun would be pretty much burnt out by that point.
Congratulations! You're qualified to work at NASA.
- Jul 31 08:53:53: ad4s1 bn 76293856; cn 8073 tn 63 sn 37
- Jul 31 08:53:59: ad4s1 bn 76293856; cn 8073 tn 63 sn 37 -- Fallback to PIO mode
- Jun 2 03:30:00: ad4s1 bn 76389888; cn 8083 tn 87 sn 57
- Jun 2 03:30:02: ad4s1 bn 76389904; cn 8083 tn 88 sn 10
- Jun 2 03:30:02: ad4s1 bn 76389920; cn 8083 tn 88 sn 26
- Jun 2 03:30:02: ad4s1 bn 76389920; cn 8083 tn 88 sn 26 -- Fallback to PIO mode
Unfortunatly PIO mode is unacceptable, so we always bump the drive back up to UDMA100 mode when it does that. This isn't comprehensive, but it is all of the instances we still have in the logs. Notice that the failure blocks are always near the end of the disk (I think...the math is a little weird at times with all of the funky drive/controller modes).I can't wait until someone tries to back up their 75GB drive on 1.44MB floppies. By my estimation that's only 53,333 floppies. Given how slow floppy drive transfers are (150kB/sec), your floppies would degrade before you finished your inital backup.
I also can't wait to pay more for the DAT drive than I'd pay just to buy another harddrive and mirror it.
Zip drives are only a minor step up from floppies, and you'd end up spending $7500 on the zip disks alone! BTW, the Click-of-death is widly overblown IMHO. Unless you happened to get one of those defective drives or you play rugby with your zip drive the media isn't going to fail any faster than a floppy (although that's not exactly a ringing endorsement)
At least CD-R (or even CR-RW) is fairly viable, if a little harder to automate (you can't just tar the files to a device).
There was some rumbling on Storage Review that these drives may just be too fast for their electronics, and once you start filling up the outer sectors on the disk you will start getting errors. My friend has a pair of the 45GB 75XPs, and at least one of them has "issues". Every so often (now that the drive is full) the kernel will spit out:
ad4s1g: hard error reading fsbn 76293856 of 26874736-26874751 (ad4s1 bn 76293856; cn 8073 tn 63 sn 37)
followed by:
ad4: DMA problem fallback to PIO mode
So far the 60GXPs that I use have had no problems (knock on wood). I've seen at least once source that suggests that the 45GB versions of this drive are the most suseptable to having this problem. I suspect there was some poor quality control on these drives and some very marginal hardware was released onto the world (bad IBM, bad!), but that's more of a feeling since I don't have much evidence to support the claim.
Maybe they just don't want to give up the sweet heaven that is a good command line ftp client.
Personally, I've never found a graphical FTP client that completely suits my needs yet anyway (and not for lack of trying!), so I'm not surprised that your teacher has the same problem.
- Command Mode: Just beeps at me twice
- Insert mode: First tries to go to ^X mode, but then cancels back out to command mode
- Visual mode: beeps then cancels back to command mode
Maybe your vim or termdef is buggy?I thought of Cochran as sort of like "rocketguy" today. Probably the technology for warp travel was several years old by that point, but all of the worlds governments were too busy with their own problems to bother with scientific exploration.
I also think warp drives are actually fairly simple devices fundimentally (almost all things are), but it gets more complicated as time goes on. Go to an old car show some day and look at the really old engines and compare it to a modern car engine.
That said, I don't think it was completely unbelievable that a determined person (along with a few assistants and a metric buttload of money) couldn't get a warp drive retrofitted on a missile. At least it's no more unbelievable than a guy building something like a rocket in his backyard to shoot himself into the stratosphere.
Everyone else blocked it mentally.
Ebay seems like a poor choice for stenography. First off, you have to actually sell something to get a picture on Ebay (IIRC), and I doubt the terrorists are going to want to bother with having buyers on their back all the time.
It seems to me like it would be much easier just to set up some random Geocities site with text like:
Hi, I'm Lisa Smith and this is my site about me and my 10 cats!
Then include several pictures of 10 different cats, including some with covert information. If you need new information you can reencode some of the pictures and reupload them. Other messages can be sent by subtly changing the HTML (adding and deleting extra spaces for instance).
I still can't figure out why they thought the images would be one Ebay.
Yes, the extra $400 is worth it to let you forget to install the heatsink.
Granted the thermal protection is a pretty major oversight on AMDs part, but it's not the killer feature in my book. I consider low cost and performance to be the killer features of a processor.
My advice: Install a good heatsink correctly the first time and pocket the difference.
I imagine it was pretty hard to outsiders to believe that some amagamation of your various immeasurable qualities could be used as some sort of monetary system...
That exactly the kind of thing people generally don't want showing up on their monthly bills though.
$300 for a massage?!? I don't remember a massage...
Omo detergent is also a mediocre laundry detergent, and I think most people would rather prefer not dissolving their clothes if they accidentally set the knob on "hot".
Was that bike ever more than just vapor and lab prototypes?
Don't forget that there are a lot of ways a product can fail, and you can't rely on the inventer or marketer to give you the whole story. In fact the state reason that a product failed is usually not the real reason it failed in my experiance. Also, beware of one sided marketing, something can have all of the greatest features in the world, but if it kills you 1 out of every 10 times you use it, nobody is going to use it.
I have trouble seeing where people are going to get offended at an "M$ Sucks!" website and then sue Microsoft over it.
Don't tell Jonathan Adams that, he's still paying Google extra for the text links.
My only gripe with FreeBSD is the amount of documentation available. You pretty much have to work out most things for yourself, there aren't the sheer number of different HOWTOs available like there are with Linux.
One thing you should remember is FreeBSD is better about keeping their manpages up to date and useful. One of the things that drove me nuts with RedHat was the sheer lack of manpages for many of the commands and almost all of the drivers (try running man 4 pcm in FreeBSD and it will tell you all about the sound driver). FreeBSD doesn't have as many HOWTOs because it doesn't need them, the manual has all the information you need in many cases.
Why do BSD articles always attract trolls like dung beetles to crap?
The Linuxulator is excellent. 95% of all Linux apps "just work". The only problems I've run into are with apps that require funky custom kernel modules to be loaded.
Besides, most Linux apps come with the source, so you can compile the native FreeBSD version instead. (which is what the ports tree is good for)
Conservative is a good word for the FreeBSD project. They don't like instability, and they're willing to give up cutting edge technology support to get it. To be fair, most of the developers are aiming at the ISP and server markets where crashes are completely unacceptable and having 3D acceleration code in the kernel is considered a liability rather than a feature. Still, that doesn't prevent people from using FreeBSD on the desktop, where it actually does a pretty good job IMHO.
I sense much anger in you.
Not quite. Cleopatra 2525 used the same music, but changed the lyrics.
The song is about (IIRC) war, nuclear apocalypse, and the tenacity of the human spirit.