Messages in this thread | | | Date | Tue, 15 Feb 2000 20:47:10 -0500 (EST) | From | Jason Salopek <> | Subject | NEW REVILATION Re: HARDWARE HELL - POSSIBLE LINUX BUG AND/OR HARDWARE FAILURE ? |
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IT'S NOT JUST SHRED ANYMORE!!!@!!!! OR DD!!!!!
it just crashed on cat /dev/urandom > /dev/null
it did one of it's favorite ways to crash
[<c01957e>] [<c0109545>] [<c01957e>] [<c0109545>] [<c01957e>] [<c0109545>] [<c01957e>] [<c0109545>] [<c01957e>] [<c0109545>]
all over the screen
On Tue, 15 Feb 2000, Theodore Y. Ts'o wrote:
> > Something that you might want to do is to check the temperature of > various parts of your system on the motherboard. There have been cases > where memory that's been certified by a major CPU manufacturer as being > Good Stuff was, when run under a really good memory torture test > (written by Larry Augustine), was observed to reach surface temperatures > of over 90 degrees centigrade. (And this was in an otherwise well > ventilated chasis!) The guess is that it worked fine in Windows sytems, > because it never agressively accessed the memory that hard, so the > manufacturer never noticed the fundamental design flaw. Obviously, we > decided not to use that particular memory in our systems. :-) > > Given that your problems started (and restarted) when you ran GNU shred, > I would suggest running it, and then when your system crashes, take some > temperature measurements and see if anything seems unusually hot. From > your description, it sounds suspiciously like a thermal problem. Do the > problems seem to go away (or lessen) if you let the computer cool down > for a while? > > If you have some temperature probes, try attaching them to various parts > of the motherboard (especially the CPU, memory, and cache), and then run > your system with the cover on. The problem may also be exacerbated by a > bad chasis design so that there are "hot spots" in certain parts of your > motherboard. Then, when a program agressively exercises the system, > it's enough to cause some component (probably memory or cache, given > your symptoms) to fall over. Oh, I'd also put a thermal sensor on your > disk drive; some disk drives can get *really* hot when you exercise them > a lot. (The Seagate Barracudas come to mind as a good example.) > > Finally, I'll give a plug for VA Linux's "burn-in" software, which can > be found at "ftp://ftp.valinux.com/pub/software/Cerberos". You might > find it a good way to torture test a system (sometimes to failure, if > it's dodgy on ventilation, power, etc.; read the warnings before you use > it.) > > - Ted >
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