Pavol Cvengros wrote:
Hello,
I am trying LKML to get some help on one linux kernel related problem.
Lately we got a machine with new HW from Intel. CPU is Intel Core2 Duo E6850
3GHz with 2GB of RAM. Motherboard is Intel DG33BU with G33 chipset.
After long fight with kernel crashes on different things, we figured out that
if the multicore is disabled in bios, everything is ok and machine is running
good. No kernel crashes no problems, but with one core only.
This small table will maybe explain:
Cores - kernel - state
2 - nonsmp or smp - crash
1 - smp or nonsmp - ok
All crashes have been different (swaper, rcu, irq, init.....) or we just got
internal gcc compiler error while compiling kernel/glibc/.... and the machine
was frozen.
Please can somebody advise what to do to identify that problem more precisely.
(debug kernel options?)
Our immpresion - ICH9 & ICH9R support in kernel is bad... sorry to say..
I have seen unusual memory behavior under heavy load, in the cases I saw
it was heavy DMA load from multiple SCSI controllers, and one case with
FFT on the CPU and heavy network load with gigE. Have you run memtest on
this hardware? Just a thought, but I see people running Linux on that
chipset, if not that particular board.
A cheap test even if it shows nothing. Of course it could be a CPU cache
issue in that one CPU, although that's unlikely.
--
Bill Davidsen <[email protected]>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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