|From:||"Zhang, Yanmin" <yanmin_zhang-AT-linux.intel.com>|
|To:||Matthew Wilcox <matthew-AT-wil.cx>|
|Subject:||AIM7 40% regression with 2.6.26-rc1|
|Date:||Tue, 06 May 2008 13:48:24 +0800|
Comparing with kernel 2.6.25, ?AIM7 (use tmpfs) has ?more than 40% with 2.6.26-rc1 on my 8-core stoakley, 16-core tigerton, and Itanium Montecito. Bisect located below patch. 64ac24e738823161693bf791f87adc802cf529ff is first bad commit commit 64ac24e738823161693bf791f87adc802cf529ff Author: Matthew Wilcox <firstname.lastname@example.org> Date: Fri Mar 7 21:55:58 2008 -0500 Generic semaphore implementation After I manually reverted the patch against 2.6.26-rc1 while fixing lots of conflictions/errors, aim7 regression became less than 2%. -yanmin
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