On Wed, Sep 29, 2010 at 10:16:13AM -0700, Chuck Swiger wrote: > On Sep 29, 2010, at 10:07 AM, Jeremy Chadwick wrote: > > On Wed, Sep 29, 2010 at 09:57:53AM -0700, Chuck Swiger wrote: > >> > >> I doubt repeated coincidences. :-) Is prime95 testing running stable > >> after waking from sleep? > > > > He's not running Prime95 (native Win32 app), he's running > > ports/math/mprime under FreeBSD natively. I don't know if this > > application stresses hardware to the same degree Prime95 does; I've used > > Prime95 many times to burn in new workstations. > > It's doing the same math operations; something like "mprime -t" is the same > as the Win32 test mode per the docs: > > -t Run the torture test. Same as Options/Torture Test. > > > The Thinkpad hardware he's on is """old""" (note the quotes), so I > > wouldn't be surprised if the CPU (Intel Pentium M) happens to induce a > > strange/odd MCA event as a result of going in/out of sleep state. It > > could be a general system bug of some sort as well (one which has no > > repercussions). > > That sounds reasonable to me, but I'm wary of uncorrected errors which seem > to be reproducible to specific circumstances. > > > Look at it this way: if his L1 cache was going bad, his system would be > > freaking out doing literally anything (booting the kernel for example); > > I'm under the impression Pentium M CPUs do not have ECC L1 cache. > > Sure, if the MCA report is reflecting a legitimate problem, and it was > happening more often than every few minutes, and it happened after a cold > reboot rather than after wakeup from sleep.... :-) > > I place more faith in ~17 hours of Prime95/mprime working OK to validate that > the hardware is not obviously broken.
Oh, absolutely. If anything my statement was indirectly agreeing with your recommended test (sans being unsure how mprime behaved). :-) I wonder if there's CPU errata or something along those lines which might explain the behaviour. -- | Jeremy Chadwick j...@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB | _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
