linux-kernel - Re: [REGRESSION] [Linux 3.2] top/htop and all other CPU usage

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Date:	Tue, 29 Nov 2011 18:31:00 +0100
From:	Ian Kumlien <pomac@...or.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	linux-kernel@...r.kernel.org, rjw@...k.pl, tino.keitel@...ei.de,
	t.artem@...os.com
Subject: Re: [REGRESSION] [Linux 3.2] top/htop and all other CPU usage

On tis, 2011-11-29 at 08:52 +0100, Michal Hocko wrote:
> On Mon 28-11-11 23:28:03, pomac@...or.com wrote:
> > Hi, 
> > 
> > All this time i have been thinking i'm the only one - and i've been to
> > loaded with work during working hours and tired when home =P
> > 
> > Anyways, I've neen seeing this since -rc1 on:
> > Intel(R) Core(TM) i5 CPU U520  @ 1.07GHz - x86-64
> > AMD Phenom(tm) II X6 1090T - x86-64
> > AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ - x86-64
> > Intel(R) Core(TM)2 CPU T7200  @ 2.00GHz - i686
> > 
> > Configs available on demand - I've been running the same config for
> > quite some time though.
> 
> As I have written in other email could you post your config and collect
> the following data?
> for i in `seq 30`; 
> do 
>         cat /proc/stat > `date +'%s'`
>         sleep 1
> done
> export old_user=0 old_nice=0 old_sys=0 old_idle=0 old_iowait=0; 
> 
> # for all your available CPUs
> grep cpu0 * | while read cpu user nice sys idle iowait rest; 
> do 
>         echo $cpu $(($user-$old_user)) $(($nice-$old_nice)) $(($sys-$old_sys)) $(($idle-$old_idle)) $(($iowait-$old_iowait))
>         old_user=$user old_nice=$nice old_sys=$sys old_idle=$idle old_iowait=$iowait
> done

Sorry, the previous one was AMD X2 4400+ and now the T7200:

1322587696:cpu0 1410110 148 368843 357890604 357890604
1322587697:cpu0 0 0 1 0 0
1322587698:cpu0 1 0 1 0 0
1322587699:cpu0 2 0 1 0 0
1322587700:cpu0 0 0 1 0 0
1322587701:cpu0 0 0 1 0 0
1322587702:cpu0 0 0 1 0 0
1322587703:cpu0 1 0 0 0 0
1322587704:cpu0 0 0 0 0 0
1322587705:cpu0 0 0 1 0 0
1322587706:cpu0 1 0 1 0 0
1322587707:cpu0 0 0 1 0 0
1322587708:cpu0 1 0 0 0 0
1322587709:cpu0 1 0 0 0 0
1322587711:cpu0 0 0 2 0 0
1322587712:cpu0 0 0 0 0 0
1322587713:cpu0 1 0 1 0 0
1322587714:cpu0 1 0 0 0 0
1322587715:cpu0 1 0 1 0 0
1322587716:cpu0 1 0 0 0 0
1322587717:cpu0 0 0 1 0 0
1322587718:cpu0 1 0 1 0 0
1322587719:cpu0 0 0 1 0 0
1322587720:cpu0 0 0 0 0 0
1322587721:cpu0 2 0 1 0 0
1322587722:cpu0 1 0 0 0 0
1322587723:cpu0 0 0 3 0 0
1322587724:cpu0 1 0 0 0 0
1322587725:cpu0 0 0 0 0 0
1322587726:cpu0 0 0 1 0 0

1322587696:cpu1 1395249 509 284978 357890604 95640
1322587697:cpu1 0 0 0 0 0
1322587698:cpu1 0 0 0 0 0
1322587699:cpu1 0 0 0 0 0
1322587700:cpu1 1 0 0 0 0
1322587701:cpu1 1 0 0 0 0
1322587702:cpu1 0 0 0 0 0
1322587703:cpu1 0 0 1 0 0
1322587704:cpu1 1 0 0 0 0
1322587705:cpu1 0 0 1 0 0
1322587706:cpu1 1 0 0 0 0
1322587707:cpu1 0 0 0 0 0
1322587708:cpu1 1 0 0 0 0
1322587709:cpu1 1 0 1 0 0
1322587711:cpu1 0 0 0 0 0
1322587712:cpu1 0 0 0 0 0
1322587713:cpu1 0 0 0 0 0
1322587714:cpu1 0 0 0 0 0
1322587715:cpu1 0 0 0 0 0
1322587716:cpu1 0 0 1 0 0
1322587717:cpu1 0 0 0 0 0
1322587718:cpu1 0 0 0 0 0
1322587719:cpu1 0 0 1 0 0
1322587720:cpu1 1 0 0 0 0
1322587721:cpu1 2 0 0 0 0
1322587722:cpu1 0 0 0 0 0
1322587723:cpu1 0 0 1 0 0
1322587724:cpu1 0 0 0 0 0
1322587725:cpu1 1 0 0 0 0
1322587726:cpu1 0 0 0 0 0

Btw, perf doesn't seem to yield anything..

-- 
Ian Kumlien  -- http://demius.net || http://pomac.netswarm.net

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