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From: "Zhang, Yanmin" <>
To: Ingo Molnar <>
Cc: LKML <>
Subject: cpu2000(both float and int) 13% regression with 2.6.28-rc1
Date: Tue, 28 Oct 2008 14:32:02 +0800	[thread overview]
Message-ID: <1225175522.1685.57.camel@ymzhang> (raw)

Comparing with 2.6.27, cpu2000 (both float and int) has about 13% regression
with 2.6.28-rc1 on my new-model x86-64 machine.

I bisected down to below patch.

commit 0afe2db21394820d32646a695eccf3fbfe6ab5c7
Merge: d847059... 43603c8...
Author: Ingo Molnar <>
Date:   Sat Oct 11 20:23:20 2008 +0200

    Merge branch 'x86/unify-cpu-detect' into x86-v28-for-linus-phase4-D

When I tried to revert it against 2.6.28-rc2, there are many conflictions.

Is it possible to break it to small patches, so we can locate the bad source lines?


             reply	other threads:[~2008-10-28  6:32 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-28  6:32 Zhang, Yanmin [this message]
2008-10-28  8:03 ` Ingo Molnar
2008-10-28  8:31   ` Zhang, Yanmin
2008-10-28 20:26   ` Suresh Siddha
2008-10-31  0:32     ` Pallipadi, Venkatesh
2008-10-31  1:08       ` H. Peter Anvin
2008-10-31 10:02         ` Ingo Molnar
2008-10-31 15:53           ` H. Peter Anvin
2008-10-31  1:15       ` Zhang, Yanmin

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