From: Gerrit Huizenga <gh@us.ibm.com>
To: rwhron@earthlink.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: O(1) scheduler gives big boost to tbench 192
Date: Thu, 02 May 2002 17:09:05 -0700 [thread overview]
Message-ID: <E173QdG-0000bs-00@w-gerrit2> (raw)
In-Reply-To: Your message of Thu, 02 May 2002 17:36:56 EDT. <20020502173656.A26986@rushmore>
In message <20020502173656.A26986@rushmore>, > : rwhron@earthlink.net writes:
> On an OSDL 4 way x86 box the O(1) scheduler effect
> becomes obvious as the run queue gets large.
>
> 2.4.19-pre7-ac2 and 2.4.19-pre7-jam6 have the O(1) scheduler.
>
> At 192 processes, O(1) shows about 340% improvement in throughput.
> The dyn-sched in -aa appears to be somewhat improved over the
> standard scheduler.
>
> Numbers are in MB/second.
>
If you are bored, you might compare this to the MQ scheduler
at http://prdownloads.sourceforge.net/lse/2.4.14.mq-sched
Also, I think rml did a backport of the 2.5.X version of O(1);
I'm not sure if htat is in -ac or -jam as yet.
Rumor is that on some workloads MQ it outperforms O(1), but it
may be that the latest (post K3?) O(1) is catching up?
gerrit
next prev parent reply other threads:[~2002-05-02 23:09 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-02 21:36 O(1) scheduler gives big boost to tbench 192 rwhron
2002-05-03 0:09 ` Gerrit Huizenga [this message]
2002-05-02 23:17 ` J.A. Magallon
2002-05-03 0:14 ` Alan Cox
2002-05-03 1:08 ` Gerrit Huizenga
-- strict thread matches above, loose matches on Subject: below --
2002-05-03 13:38 rwhron
2002-05-03 20:29 ` Gerrit Huizenga
2002-05-04 8:13 ` Andrea Arcangeli
2002-05-07 22:13 ` Mike Kravetz
2002-05-07 22:44 ` Alan Cox
2002-05-07 22:43 ` Mike Kravetz
2002-05-07 23:39 ` Robert Love
2002-05-07 23:48 ` Mike Kravetz
2002-05-08 15:34 ` Jussi Laako
2002-05-08 16:31 ` Robert Love
2002-05-08 17:02 ` Mike Kravetz
2002-05-09 0:26 ` Jussi Laako
2002-05-08 8:50 ` Andrea Arcangeli
2002-05-09 23:18 ` Mike Kravetz
2002-05-03 16:37 John Hawkes
2002-05-06 8:20 rwhron
2002-05-06 16:42 ` Andrea Arcangeli
2002-05-08 16:39 Bill Davidsen
2002-05-20 12:46 rwhron
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