Re: intel_ips produces constant load of 1

From: Andreas Hartmann
Date: Wed Mar 23 2011 - 15:43:08 EST


Jesse Barnes wrote:
> On Wed, 23 Mar 2011 19:15:57 +0100
> Andreas Hartmann <andihartmann@xxxxxxxxxx> wrote:
>
>> 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 :-).
>>
>
> Did I forget to paste it? See below.
>

Uuuups - it was below the sig, which I switch off :-). Found it. Will
test it tomorrow.


Andreas
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