From: Pavel Machek <pavel@suse.cz>
To: safemode <safemode@voicenet.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: incorrect CPU usage readings in 2.2.19prex?
Date: Fri, 9 Mar 2001 13:36:20 +0000 [thread overview]
Message-ID: <20010309133620.A31@(none)> (raw)
In-Reply-To: <3AA80004.65259634@voicenet.com>
In-Reply-To: <3AA80004.65259634@voicenet.com>; from safemode@voicenet.com on Thu, Mar 08, 2001 at 04:56:20PM -0500
Hi!
> Is there something generally wrong with how linux determines total cpu
> usage (via procmeter3 and top) when dealing with applications that are
> threaded? I routinely get 0% cpu usage when playing mpegs and mp3s and
> some avi's even (Divx when using no software enhancement) ... Somehow i
> doubt that the decoders are so streamlined that they produce <1% cpu
> usage on the computer. Does anyone know what's going on with this?
> ps shows nearly 0% cpu usage in the threads as well.
CPU usage of programs that sleep after short computation is incorrectly computed
See badboy examples for code that gets 70% of cpu and is reported as getting
0%.
> i've seen it in these programs
> freeamp
> mplayer
>
> I've seen it in earlier 2.2.19 kernels but i'm using pre14 right now.
>
> -
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--
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prev parent reply other threads:[~2001-03-12 8:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-08 21:56 incorrect CPU usage readings in 2.2.19prex? safemode
2001-03-08 22:21 ` Jonathan Morton
2001-03-09 13:36 ` Pavel Machek [this message]
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