From: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: mingo@elte.hu
Subject: aim7 -30% regression in 2.6.24-rc1
Date: Fri, 26 Oct 2007 17:43:07 +0800 [thread overview]
Message-ID: <1193391787.3019.174.camel@ymzhang> (raw)
I tested 2.6.24-rc1 on my x86_64 machine which has 2 quad-core processors.
Comparing with 2.6.23, aim7 has about -30% regression. I did a bisect and found
patch http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b5869ce7f68b233ceb81465a7644be0d9a5f3dbb
caused the issue.
kbuild/SPECjbb2000/SPECjbb2005 also has big regressions. On my another
tigerton machine (4 quad-core processors), SPECjbb2005 has more than -40%
regression. I didn't do a bisect on such benchmark testing, but I suspect
the root cause is like aim7's.
-yanmin
next reply other threads:[~2007-10-26 9:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-26 9:43 Zhang, Yanmin [this message]
2007-10-26 9:53 ` aim7 -30% regression in 2.6.24-rc1 Peter Zijlstra
2007-10-29 0:15 ` Zhang, Yanmin
2007-10-26 11:23 ` Ingo Molnar
2007-10-29 2:22 ` Zhang, Yanmin
2007-10-29 9:37 ` Zhang, Yanmin
2007-10-30 2:12 ` Zhang, Yanmin
2007-10-30 7:26 ` Ingo Molnar
2007-10-30 8:36 ` Zhang, Yanmin
2007-10-31 9:57 ` Zhang, Yanmin
2007-10-31 10:30 ` Peter Zijlstra
2007-11-01 8:58 ` Ingo Molnar
[not found] ` <1193922687.27652.279.camel@twins>
[not found] ` <20071101150049.GB4044@elte.hu>
2007-11-01 15:29 ` Peter Zijlstra
2007-11-01 15:36 ` Ingo Molnar
2007-11-01 9:34 ` Zhang, Yanmin
2007-11-01 10:02 ` Cyrus Massoumi
2007-11-05 1:24 ` Zhang, Yanmin
2007-11-05 9:37 ` Cyrus Massoumi
2007-11-07 5:30 ` Zhang, Yanmin
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