Re: intel_ips produces constant load of 1

From: Andreas Hartmann
Date: Wed Mar 23 2011 - 14:15:03 EST


Jesse Barnes wrote:
> On Mon, 21 Mar 2011 11:04:04 -0700
> Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote:
>
>>> ps aux | grep ips
>>> root 593 0.0 0.0 0 0 ? S 17:20 0:00
>>> [ips-adjust]
>>> root 594 0.0 0.0 0 0 ? D 17:20 0:00
>>> [ips-monitor]
>>>
>>> If the module isn't loaded, the load of the machine in idle mode is 0 as
>>> expected.
>>
>> This is a reporting problem, and probably due to the schedule() call
>> and associated task state in the ips-monitor thread. I thought setting
>> the task state to interruptible would prevent this, but it seems like
>> it's not enough for the deferrable on-stack timers?
>>
>> At any rate, it's not actually causing increased CPU usage, so you can
>> safely ignore it until we have a fix.
>
> Oops, one task uses interruptible correctly, but the monitor thread
> doesn't.
>
> Does this patch fix your load average?

Which patch? I can't see any patch :-).


Andreas
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