* High [extra timer interrupt] count in powertop since 2.6.36
@ 2010-10-30 23:52 Ian Kumlien
2010-11-01 16:13 ` Jeremy Fitzhardinge
2010-11-07 7:44 ` Maciej Rutecki
0 siblings, 2 replies; 4+ messages in thread
From: Ian Kumlien @ 2010-10-30 23:52 UTC (permalink / raw)
To: linux-kernel
Hi,
I have been searching the list for anyone else seeing this,
but i haven't found anything yet - Any ideas on how to debug?
>From powertop:
Top causes for wakeups:
84.7% (1673.3) [extra timer interrupt]
Thats a little bit high in my opinion, for some reason it seems to be
ignored since the actual number of wakeups seems to be ~367 or so.
Ideas? Suggestions?
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: High [extra timer interrupt] count in powertop since 2.6.36
2010-10-30 23:52 High [extra timer interrupt] count in powertop since 2.6.36 Ian Kumlien
@ 2010-11-01 16:13 ` Jeremy Fitzhardinge
2010-11-02 15:45 ` Ian Kumlien
2010-11-07 7:44 ` Maciej Rutecki
1 sibling, 1 reply; 4+ messages in thread
From: Jeremy Fitzhardinge @ 2010-11-01 16:13 UTC (permalink / raw)
To: Ian Kumlien; +Cc: linux-kernel, Arjan van de Ven
On 10/30/2010 07:52 PM, Ian Kumlien wrote:
> Hi,
>
> I have been searching the list for anyone else seeing this,
> but i haven't found anything yet - Any ideas on how to debug?
>
> From powertop:
> Top causes for wakeups:
> 84.7% (1673.3) [extra timer interrupt]
>
> Thats a little bit high in my opinion, for some reason it seems to be
> ignored since the actual number of wakeups seems to be ~367 or so.
>
> Ideas? Suggestions?
I'm not sure, but I'm seeing something similar.
J
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: High [extra timer interrupt] count in powertop since 2.6.36
2010-11-01 16:13 ` Jeremy Fitzhardinge
@ 2010-11-02 15:45 ` Ian Kumlien
0 siblings, 0 replies; 4+ messages in thread
From: Ian Kumlien @ 2010-11-02 15:45 UTC (permalink / raw)
To: Jeremy Fitzhardinge; +Cc: linux-kernel, Arjan van de Ven
On Mon, 1 Nov 2010, Jeremy Fitzhardinge wrote:
> On 10/30/2010 07:52 PM, Ian Kumlien wrote:
>> Hi,
>>
>> I have been searching the list for anyone else seeing this,
>> but i haven't found anything yet - Any ideas on how to debug?
>>
>> From powertop:
>> Top causes for wakeups:
>> 84.7% (1673.3) [extra timer interrupt]
>>
>> Thats a little bit high in my opinion, for some reason it seems to be
>> ignored since the actual number of wakeups seems to be ~367 or so.
>>
>> Ideas? Suggestions?
>
> I'm not sure, but I'm seeing something similar.
using powertop: 1.13
< Detailed C-state information is not P-states (frequencies)
3.21 Ghz 6.0%
2.40 Ghz 0.0%
1.60 Ghz 0.1%
800 Mhz 93.9%
Wakeups-from-idle per second : 441.8 interval: 10.0s
no ACPI power usage estimate available
Top causes for wakeups:
84.3% (2132.0) [extra timer interrupt]
8.1% (205.4) qemu-system-x86
2.4% ( 61.0) [eth1] <interrupt>
1.2% ( 31.1) [eth0] <interrupt>
1.2% ( 29.3) java
1.0% ( 26.3) [ahci] <interrupt>
0.5% ( 13.0) [sky2@pci:0000:05:00.0] <interrupt>
0.5% ( 12.0) kworker/u:2
...
Has any output been changed, is this just a missenterpetation done by powertop?
CPU: AMD Phenom(tm) II X6 1090T Processor
> J
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: High [extra timer interrupt] count in powertop since 2.6.36
2010-10-30 23:52 High [extra timer interrupt] count in powertop since 2.6.36 Ian Kumlien
2010-11-01 16:13 ` Jeremy Fitzhardinge
@ 2010-11-07 7:44 ` Maciej Rutecki
1 sibling, 0 replies; 4+ messages in thread
From: Maciej Rutecki @ 2010-11-07 7:44 UTC (permalink / raw)
To: Ian Kumlien; +Cc: linux-kernel
On niedziela, 31 października 2010 o 01:52:08 Ian Kumlien wrote:
> Hi,
>
> I have been searching the list for anyone else seeing this,
> but i haven't found anything yet - Any ideas on how to debug?
>
> From powertop:
> Top causes for wakeups:
> 84.7% (1673.3) [extra timer interrupt]
>
> Thats a little bit high in my opinion, for some reason it seems to be
> ignored since the actual number of wakeups seems to be ~367 or so.
>
> Ideas? Suggestions?
I created a Bugzilla entry at
https://bugzilla.kernel.org/show_bug.cgi?id=22272
for your bug report, please add your address to the CC list in there, thanks!
--
Maciej Rutecki
http://www.maciek.unixy.pl
^ permalink raw reply [flat|nested] 4+ messages in thread
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2010-10-30 23:52 High [extra timer interrupt] count in powertop since 2.6.36 Ian Kumlien
2010-11-01 16:13 ` Jeremy Fitzhardinge
2010-11-02 15:45 ` Ian Kumlien
2010-11-07 7:44 ` Maciej Rutecki
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