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From: "Toralf Förster" <toralf.foerster@gmx.de>
To: Tomasz Chmielewski <mangoo@wpkg.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: (ondemand) CPU governor  regression between 2.6.23 and 2.6.24
Date: Sat, 26 Jan 2008 19:46:51 +0100	[thread overview]
Message-ID: <200801261946.54518.toralf.foerster@gmx.de> (raw)
In-Reply-To: <479B69D2.5050603@wpkg.org>

[-- Attachment #1: Type: text/plain, Size: 1312 bytes --]


The problem is the same as described here : http://lkml.org/lkml/2007/10/21/85
If I run dnetc even with lowest prority than the CPU stays at 600 MHz regardless
of any other load (eg. rsyncing, svn update, compiling, ...)

Stopping the dnetc process immediately speeds up the CPU up to 1.7 GHz.


Am Samstag, 26. Januar 2008 schrieben Sie:
> During the test, run top, and watch your CPU usage. Does it go above 80% 
> (the default for 
> /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold).

No, instead I get :

 PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 7294 dnetc     39  19   664  348  264 R 49.5  0.0   0:48.68 dnetc
 7310 tfoerste  20   0  1796  492  428 R 48.5  0.0   0:07.19 factor
 7050 root      20   0 96736 8872 3972 S  0.7  0.9   0:02.99 X


> What CPUFreq processor driver are you using?
I use the native kernel built-in ondemand governor. BTW, here are the settings:

n22 /sys/devices/system/cpu/cpu0/cpufreq/ondemand # tail -v *
==> ignore_nice_load <==
1

==> powersave_bias <==
0

==> sampling_rate <==
500000

==> sampling_rate_max <==
250000000

==> sampling_rate_min <==
250000

==> up_threshold <==
80


-- 
MfG/Sincerely

Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3

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  reply	other threads:[~2008-01-26 18:47 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-26 17:11 Tomasz Chmielewski
2008-01-26 18:46 ` Toralf Förster [this message]
2008-01-27 14:46   ` Srivatsa Vaddagiri
2008-01-27 15:06     ` Toralf Förster
2008-01-27 16:54       ` Srivatsa Vaddagiri
2008-01-27 16:57         ` Toralf Förster
2008-01-27 21:27           ` Peter Zijlstra
2008-01-27 22:32             ` Ingo Molnar
2008-01-28  8:38           ` Helge Hafting
2008-01-26 21:38 ` Toralf Förster
2008-01-26 21:45   ` Sam Ravnborg
     [not found] ` <200801271200.04971.toralf.foerster@gmx.de>
     [not found]   ` <1201433167.22060.10.camel@homer.simson.net>
2008-01-27 12:39     ` Toralf Förster
2008-01-27 18:58       ` Mike Galbraith
2008-01-27 21:14         ` Toralf Förster
2008-01-27 21:25           ` Peter Zijlstra
2008-01-28 13:18           ` Ingo Molnar
2008-01-28 15:16             ` Toralf Förster
  -- strict thread matches above, loose matches on Subject: below --
2008-01-26 14:06 Toralf Förster
2008-02-04  0:32 ` Andrew Morton
2008-02-04  0:36   ` Andrew Morton
2008-02-04 17:44   ` Pallipadi, Venkatesh
2008-02-04 19:18     ` Toralf Förster

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