[wellylug] ubuntu load average

Daniel Pittman daniel at rimspace.net
Fri Jan 16 15:57:50 NZDT 2009


Pete Black <pete at marchingcubes.com> writes:

>>>> Some machines have irq issues with the linux kernel, this can manifest
>>>> as a high load average, clock drift etc.
>>>>
>>> Really?  Your description sounds very much like a screaming interrupt of
>>> some sort, which is a very serious issue, but your description here
>>> doesn't quite match up.
>>>
>>> The only citations I can find for high load average on idle or clock
>>> drift don't suggest interrupt issues, but rather kernel or hardware
>>> faults in other areas.
>>
> Maybe this is the problem?
> http://kerneltrap.org/Linux/High_Idle_Load_Average

It could be, but the issue discussed there is a bug in the kernel
returning silly values from two different time related calls, resulting
in processes not sleeping when they expected to.

None of that is really to do with interrupt handling or anything like
that, but rather with different versions of "time" in the kernel
disagreeing.

Regards,
        Daniel



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