[CentOS] Machine SLOWWWS and then stops after a few minutes running centos 5.

[Lonny Selinger]

> Hi all,
>
> I had asked the other day about my new machine amd 6000+ and
> strangely SLOWWING down then eventually stopping.
>
> I have tried a new 500W power supply,
> I took out the extra video card, and just used the one on the
> motherboard (both are nvidia one with
> DVI one RGB).
> I took out all the RAM and tried differnent RAM.
> I ran memtest86 (ran fine until the machine turn off).
> Harddrives should be fine since they are not active during memtest86.
> THe temperature on the CPU has never been higher that 118 degrees. This
> is after it turns off
> and I go into the hardware monitor.
>
> I reset the BIOS settings or loaded defaults. I did download from ASUS
> the current
> BIOS for the M2N-MX motherboard.
>
> I cannot change the mother board or processor without buying a new one.
>
> It is SO STRANGE that the system slows DOWN before shutting off.
> I run a continuous compile and use the time command to time it. The
> compile starts at about 16 seconds and SLOWS DOWN to 30 seconds right
> before turning off.
>
> cpuspeed is not running on the box. If anything its supposed to speed up
> not down.
>
> Is there anything else to try or any suggestions. I also boot centos 5
> with "noapic" on the kernel line.


It 'sounds' hardware related but I'm just wondering if you ever have another
terminal open and can watch something like top or ran sar against it. It would
be nice to see if a specific resource seems to be dying on you. Does the CPU
spike before it dies? is all available RAM gone? How does your swap look?
Although it might be unlikely I've seen machines exhaust all the RAM and chew
up swap halting the machine (mind you there were bigger issues like poorly
written applications not freeing up memory etc).

If nothing looks like it spikes _while_ you are monitoring it under load and
nothing seems obvious, hardware could be the culprit

--
L