Home » Mailing list archives » linux-kernel » 2007 » October » 26

aim7 -30% regression in 2.6.24-rc1

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
[view in full thread]
From: Zhang, Yanmin
Subject: aim7 -30% regression in 2.6.24-rc1
Date: Friday, October 26, 2007 - 2:43 am

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=b5869c...
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

-
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
Messages in current thread:
aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Fri Oct 26, 2:43 am)
Re: aim7 -30% regression in 2.6.24-rc1, Peter Zijlstra, (Fri Oct 26, 2:53 am)
Re: aim7 -30% regression in 2.6.24-rc1, Ingo Molnar, (Fri Oct 26, 4:23 am)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Sun Oct 28, 5:15 pm)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Sun Oct 28, 7:22 pm)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Mon Oct 29, 2:37 am)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Mon Oct 29, 7:12 pm)
Re: aim7 -30% regression in 2.6.24-rc1, Ingo Molnar, (Tue Oct 30, 12:26 am)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Tue Oct 30, 1:36 am)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Wed Oct 31, 2:57 am)
Re: aim7 -30% regression in 2.6.24-rc1, Peter Zijlstra, (Wed Oct 31, 3:30 am)
Re: aim7 -30% regression in 2.6.24-rc1, Ingo Molnar, (Thu Nov 1, 1:58 am)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Thu Nov 1, 2:34 am)
Re: aim7 -30% regression in 2.6.24-rc1, Cyrus Massoumi, (Thu Nov 1, 3:02 am)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Sun Nov 4, 6:24 pm)
Re: aim7 -30% regression in 2.6.24-rc1, Cyrus Massoumi, (Mon Nov 5, 2:37 am)
Re: aim7 -30% regression in 2.6.24-rc1, Zhang, Yanmin, (Tue Nov 6, 10:30 pm)