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Date: Fri, 26 Oct 2007 17:43:07 +0800 From: "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com> To: LKML <linux-kernel@...r.kernel.org> Cc: mingo@...e.hu Subject: aim7 -30% regression in 2.6.24-rc1 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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