Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754681AbXJ2ARX (ORCPT ); Sun, 28 Oct 2007 20:17:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751121AbXJ2ARQ (ORCPT ); Sun, 28 Oct 2007 20:17:16 -0400 Received: from mga05.intel.com ([192.55.52.89]:26408 "EHLO fmsmga101.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751099AbXJ2ARP (ORCPT ); Sun, 28 Oct 2007 20:17:15 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.21,339,1188802800"; d="scan'208";a="361864128" Subject: Re: aim7 -30% regression in 2.6.24-rc1 From: "Zhang, Yanmin" To: Peter Zijlstra Cc: LKML , mingo@elte.hu In-Reply-To: <1193392422.6914.25.camel@twins> References: <1193391787.3019.174.camel@ymzhang> <1193392422.6914.25.camel@twins> Content-Type: text/plain; charset=utf-8 Date: Mon, 29 Oct 2007 08:15:33 +0800 Message-Id: <1193616933.3019.181.camel@ymzhang> Mime-Version: 1.0 X-Mailer: Evolution 2.9.2 (2.9.2-2.fc7) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1188 Lines: 29 On Fri, 2007-10-26 at 11:53 +0200, Peter Zijlstra wrote: > On Fri, 2007-10-26 at 17:43 +0800, Zhang, Yanmin wrote: > > 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. > > Bit weird that you point to a merge commit, and not an actual patch. Are > you sure git bisect pointed at this one? When I did a bisect, kernel couldn't boot and my testing log showed it's at b5869ce7f68b233ceb81465a7644be0d9a5f3dbb. So I did a manual checkout. #git clone ... #git pull ... #git checkout b5869ce7f68b233ceb81465a7644be0d9a5f3dbb Then, compiled kernel and tested it. Then, reversed above patch and recompiled/retested it. If I ran git log, I could see this tag in the list. -yanmin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/