Date: Fri, 23 Mar 2001 10:56:24 +0100 From: receiver@alize-sfl.com To: freebsd-smp@freebsd.org Subject: SMP / trap12 / heat problem. Message-ID: <20010323105624.C28104@pasteur.alize-sfl.com>
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Hi all,
yesterday i bought a ASUS CUV4X-D with 2 PIII 800 & 4x256Mo SDRAM.
(i've been expecting a smp machine for 4 years ;-) ).
please note that i'm totally new to SMP world, so be indulgent please :)
i've encountered different problems:
* first, when everything is alright (temperature disabled
in BIOS, bi-pro kernel),
the system can eat up to 45% (avg 15-35%) of CPU when
building world -j 4. do you think it's normal ?
(/usr/src and /usr/obj are on the same 40Mb/s SCSI
disk (seagate) on an AHA2940UW (not U2W))
* second, when building world -j 4, i see some (not many)
calcru errors, only with ld and as, not make or cc1. some
= 12 exactly (the build world didn't terminate :
i checked LINT,
and sysctl'd kern.timecounter.method,
then the console was *FLOODED* with 'microuptime went backward'
messages, i switched to X to be a bit cooler to type things,
xconsole freezed, then X freezed, keyboard too, then i powered
off and went to bed. ;-(
third, bios problem : when all hardware monitors in BIOS are on,
in monoproc kernel, everything is fine.
when booting my SMP kernel, the machines starts *beeping* near
the 'waiting 5 seconds for scsi devices to settle'.
if i disable CPU#0 temperature watch in BIOS, everything is fine.
* independently (sorry, i don't know if this word exists), healthd:
* does not find CPU temp / fan properties in ISA mode.
* cannot find smb0, even if my kernel is compiled with
support for it (it worked with the same options on my
old ABIT P2something.
* reports 6.86V for 5V, 14.xx for 12V, and 4.x for
3.3VCORE. (the bios reports 5.02, 12.8 and 3.01.
* when i try AUTO_EOI_1 and AUTO_EOI_2 and NTIMECOUNTER=20 in my
SMP kernel, nmbd (at boot) kills the kernel which says :
abort trap 12 : default page while in kernel mode,
and so on.
i didn't have time this morning to test which of the 3 options
is faultive (does this exist too ?).
I suspect my power supply to be not so good. It's a 300W, but not for
SMP mother boards, it has no EAUX pin. i will try to change it at noon.
(i've got two 250W to test, only to see if healthd reports better voltage).
I will try to swap the CPU's too (CPU#0 is at ~170K (75°C) and CPU#1 is
at ~100K (49°C), acording to the bios hardware monitor. Generally, the #0
is *much* hotter than #1.
I think i've said everything. All the hardware is brand new. if you want
my KERNEL file, my dmesg, i will give you all that in the afternoon (it's
currently 10:36AM in France), and my box is at home.
note that for the moment, i don't know how to debug the kernel and catch
the page fault message and all the magic kdb things... i've got only
few knowledge of that sort of things. but i can learn (and i want to).
thanks for you comments and your help, keep the good work, i love freebsd.
PS: does anyone knows why at BIOS boot i get :
------------------------------
blahblah ACPI rev blah
CPU1: Intel blahblah
CPU2:*Intel blahblah
^
this star ?
------------------------------
could this be a problem on CPU2 (#1 for us) ? or is the mb just happy to see
a second CPU ?
thanks again,
Olivier Cortes
Free Software Admin
PS2: i checked the mailing lists archives (for -questions, -hackers, and -smp),
and have read smp(4), mptables(1), sync(*), fsync(*), syncer(*). i didn't find
anything relevant for my problems. overall, i reboot ~10 times during 4 hours,
and i love vinum (fscking a 2x30 stripped IDE storage is quick :) ).
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