From: Tim Chen <tim.c.chen@linux.intel.com>
To: kernel@kolivas.org, linux-kernel@vger.kernel.org
Subject: Regression seen for patch "sched:dont decrease idle sleep avg"
Date: Mon, 08 May 2006 16:18:18 -0700 [thread overview]
Message-ID: <1147130298.30649.33.camel@localhost.localdomain> (raw)
Con,
As a result of the patch "sched:dont decrease idle sleep avg"
introduced after 2.6.15, there is a 4% drop in Volanomark
throughput on our Itanium test machine.
Probably the following happened:
Compared to previous code, this patch slightly increases
the the priority boost when a job is woken up.
This adds priority spread and variations to the wait time of jobs
on run queue if we have a lot of similar jobs in the system.
See patch:
http://www.kernel.org/git/?
p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e72ff0bb2c163eb13014ba113701bd42dab382fe
Regards,
Tim
next reply other threads:[~2006-05-08 23:54 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-08 23:18 Tim Chen [this message]
2006-05-09 0:43 ` Con Kolivas
2006-05-09 1:07 ` Martin Bligh
2006-05-12 0:04 ` Chen, Kenneth W
2006-05-13 12:27 ` Andrew Morton
2006-05-13 13:07 ` Mike Galbraith
2006-05-14 16:03 ` Con Kolivas
2006-05-15 19:01 ` Chen, Kenneth W
2006-05-15 23:45 ` Con Kolivas
2006-05-16 1:22 ` Chen, Kenneth W
2006-05-16 1:44 ` Con Kolivas
2006-05-16 4:10 ` Mike Galbraith
2006-05-16 23:32 ` Tim Chen
2006-05-17 4:25 ` Mike Galbraith
2006-05-17 4:45 ` Peter Williams
2006-05-17 5:24 ` Mike Galbraith
2006-05-17 8:23 ` Con Kolivas
2006-05-17 9:49 ` Mike Galbraith
2006-05-17 10:25 ` Con Kolivas
2006-05-17 11:42 ` Mike Galbraith
2006-05-17 12:46 ` Con Kolivas
2006-05-17 13:41 ` Mike Galbraith
2006-05-17 15:10 ` Con Kolivas
2006-05-17 17:21 ` Ray Lee
2006-05-17 19:33 ` Chen, Kenneth W
2006-05-18 0:35 ` Con Kolivas
2006-05-18 1:10 ` Chen, Kenneth W
2006-05-18 1:38 ` Con Kolivas
2006-05-18 5:44 ` Mike Galbraith
2006-05-18 5:52 ` Con Kolivas
2006-05-18 7:04 ` Mike Galbraith
2006-05-18 12:59 ` Mike Galbraith
2006-05-19 1:10 ` Con Kolivas
2006-05-18 23:17 ` Chen, Kenneth W
2006-05-19 1:30 ` [PATCH] sched: fix interactive ceiling code Con Kolivas
2006-05-19 2:02 ` Mike Galbraith
2006-05-19 9:40 ` Ingo Molnar
2006-05-19 14:37 ` Chen, Kenneth W
2006-05-19 16:19 ` tim_c_chen
2006-05-18 23:34 ` Regression seen for patch "sched:dont decrease idle sleep avg" Chen, Kenneth W
2006-05-19 1:07 ` Con Kolivas
2006-05-16 4:07 ` Mike Galbraith
2006-05-18 4:01 Al Boldi
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