From: Rik van Riel <riel@conectiva.com.br>
To: Sasha Pachev <sasha@mysql.com>
Cc: Mike Kravetz <mkravetz@sequent.com>, <linux-kernel@vger.kernel.org>
Subject: Re: Strange thread behaviour on 8-way x86 machine
Date: Fri, 6 Jul 2001 16:24:52 -0300 (BRST) [thread overview]
Message-ID: <Pine.LNX.4.33L.0107061624370.17825-100000@duckman.distro.conectiva> (raw)
In-Reply-To: <0107061245200U.17811@mysql>
On Fri, 6 Jul 2001, Sasha Pachev wrote:
> Upon further investigation and testing, it turned out that the kernel was not
> at fault - the problem was high mutex contention, which caused frequent
> context switches, and the idle CPU was apparently from the scheduler waiting
> for the original CPU to become available too often.
>
> On a side note, it would be nice if a process could communicate
> to the kernel that it would rather run on the first available
> CPU than wait for the perfect one to become available.
The kernel already does this.
Rik
--
Executive summary of a recent Microsoft press release:
"we are concerned about the GNU General Public License (GPL)"
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next prev parent reply other threads:[~2001-07-06 19:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-03 18:25 Strange thread behaviour on 8-way x86 machine Sasha Pachev
2001-07-03 18:51 ` Mike Kravetz
2001-07-06 18:45 ` Sasha Pachev
2001-07-06 19:24 ` Rik van Riel [this message]
2001-07-06 20:35 ` Sasha Pachev
2001-07-06 20:41 ` Rik van Riel
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