Messages in this thread | | | Date | Wed, 09 Jan 2002 12:19:16 +0100 (CET) | Subject | Re: [patch] O(1) scheduler, -D1, 2.5.2-pre9, 2.4.17 | From | Rene Rebe <> |
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Hi.
From: Ingo Molnar <mingo@elte.hu> Subject: Re: [patch] O(1) scheduler, -D1, 2.5.2-pre9, 2.4.17 Date: Wed, 9 Jan 2002 12:37:46 +0100 (CET)
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> 2.5.2-pre10-vanilla running the test at the default priority level: > > # ./chat_s 127.0.0.1 > # ./chat_c 127.0.0.1 10 1000 > > Average throughput : 124676 messages per second > Average throughput : 102244 messages per second > Average throughput : 115841 messages per second > > [ system is unresponsive at the start of the test, but > once the 2.5.2-pre10 load-estimator establishes which task is > interactive and which one is not, the system becomes usable. > Load can be felt and there are frequent delays in commands. ] > > 2.5.2-pre10-vanilla running at nice level 19: > > # nice -n 19 ./chat_s 127.0.0.1 > # nice -n 19 ./chat_c 127.0.0.1 10 1000 > > Average throughput : 214626 messages per second > Average throughput : 220876 messages per second > Average throughput : 225529 messages per second > > [ system is usable from the beginning - nice levels are working as > expected. Load can be felt while executing shell commands, but the > system is usable. Load cannot be felt in truly interactive > applications like editors. > > Summary of throughput results: 2.5.2-pre10-vanilla is equivalent > throughput-wise in the test with your patched kernel, but the vanilla > kernel is about 100% faster than your patched kernel when running reniced.
Could someone tell a non-kernel-hacker why this benchmark is nearly twice as fast when running reniced??? Shouldn't it be slower when it runs with lower priority (And you execute / type some commands during it)?
[...]
> Ingo
k33p h4ck1n6 René
-- René Rebe (Registered Linux user: #248718 <http://counter.li.org>)
eMail: rene.rebe@gmx.net rene@rocklinux.org
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