Re: O(1) scheduler gives big boost to tbench 192

From: J.A. Magallon (
Date: Thu May 02 2002 - 18:17:51 EST

On 2002.05.03 Gerrit Huizenga wrote:
>In message <20020502173656.A26986@rushmore>, > : 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
>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.

-jam6 is sched-O1-rml-2 (the backport).

>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?

J.A. Magallon                           #  Let the source be with you...
Mandrake Linux release 8.3 (Cooker) for i586
Linux werewolf 2.4.19-pre7-jam9 #2 SMP miť may 1 12:09:38 CEST 2002 i686
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