Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751830Ab2BIGWe (ORCPT ); Thu, 9 Feb 2012 01:22:34 -0500 Received: from mail-qw0-f53.google.com ([209.85.216.53]:61810 "EHLO mail-qw0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750751Ab2BIGWc convert rfc822-to-8bit (ORCPT ); Thu, 9 Feb 2012 01:22:32 -0500 MIME-Version: 1.0 In-Reply-To: <20120208162925.GA19392@google.com> References: <20120206172706.GB21292@google.com> <4F303506.9000201@kernel.dk> <20120206215451.GD21292@google.com> <4F30C96F.1000905@kernel.dk> <20120207162253.GG21292@google.com> <4F315113.5010804@kernel.dk> <20120207164735.GH21292@google.com> <20120208162925.GA19392@google.com> Date: Thu, 9 Feb 2012 14:22:32 +0800 X-Google-Sender-Auth: f7x7yrzaLLZbZy4VLNmv6XBUkdY Message-ID: Subject: Re: [PATCH] block: strip out locking optimization in put_io_context() From: Shaohua Li To: Tejun Heo Cc: Linus Torvalds , Jens Axboe , Vivek Goyal , lkml , Knut Petersen , mroos@linux.ee Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 951 Lines: 23 2012/2/9 Tejun Heo : > Hello, Shaohua. > > On Wed, Feb 08, 2012 at 04:29:53PM +0800, Shaohua Li wrote: >> > the test adds mem=4G in a 2 sockets 16 CPU machine. >> > just make several copy of kernel source in tmpfs (so there is swap >> > depending on your >> > memory size) and run kernel build in the kernel source in the meaning time. >> > there is only one swap device which is a rotating disk. >> > >> > I'll test both patches soon. >> >> Tried all the options, the regression still exists. Any new idea? >> I'll spend some time on it if I can get anything > > Can you please try the following one? ?Thanks a lot! doesn't work. I also double confirmed b2efa05265d62 causes the regression -- 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/