From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754468Ab0CWXKH (ORCPT ); Tue, 23 Mar 2010 19:10:07 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:49891 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753390Ab0CWXKF (ORCPT ); Tue, 23 Mar 2010 19:10:05 -0400 Date: Tue, 23 Mar 2010 16:04:35 -0700 (PDT) From: Linus Torvalds To: Anton Starikov , Greg KH , stable@kernel.org cc: Ingo Molnar , Andrew Morton , linux-mm@kvack.org, Linux Kernel Mailing List , bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance In-Reply-To: <9FC34DA1-D6DD-41E5-8B76-0712A813C549@gmail.com> Message-ID: References: <20100323102208.512c16cc.akpm@linux-foundation.org> <20100323173409.GA24845@elte.hu> <9D040E9A-80F2-468F-A6CD-A4912615CD3F@gmail.com> <9FC34DA1-D6DD-41E5-8B76-0712A813C549@gmail.com> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 23 Mar 2010, Anton Starikov wrote: > > I think we got a winner! > > Problem seems to be fixed. > > Just for record, I used next patches: > > 59c33fa7791e9948ba467c2b83e307a0d087ab49 > 5d0b7235d83eefdafda300656e97d368afcafc9a > 1838ef1d782f7527e6defe87e180598622d2d071 > 4126faf0ab7417fbc6eb99fb0fd407e01e9e9dfe > bafaecd11df15ad5b1e598adc7736afcd38ee13d > 0d1622d7f526311d87d7da2ee7dd14b73e45d3fc Ok. If you have performance numbers for before/after these patches for your actual workload, I'd suggest posting them to stable@kernel.org, and maybe those rwsem fixes will get back-ported. The patches are pretty small, and should be fairly safe. So they are certainly stable material. Linus From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id 241016B01B6 for ; Tue, 23 Mar 2010 19:10:06 -0400 (EDT) Date: Tue, 23 Mar 2010 16:04:35 -0700 (PDT) From: Linus Torvalds Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance In-Reply-To: <9FC34DA1-D6DD-41E5-8B76-0712A813C549@gmail.com> Message-ID: References: <20100323102208.512c16cc.akpm@linux-foundation.org> <20100323173409.GA24845@elte.hu> <9D040E9A-80F2-468F-A6CD-A4912615CD3F@gmail.com> <9FC34DA1-D6DD-41E5-8B76-0712A813C549@gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Anton Starikov , Greg KH , stable@kernel.org Cc: Ingo Molnar , Andrew Morton , linux-mm@kvack.org, Linux Kernel Mailing List , bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra List-ID: On Tue, 23 Mar 2010, Anton Starikov wrote: > > I think we got a winner! > > Problem seems to be fixed. > > Just for record, I used next patches: > > 59c33fa7791e9948ba467c2b83e307a0d087ab49 > 5d0b7235d83eefdafda300656e97d368afcafc9a > 1838ef1d782f7527e6defe87e180598622d2d071 > 4126faf0ab7417fbc6eb99fb0fd407e01e9e9dfe > bafaecd11df15ad5b1e598adc7736afcd38ee13d > 0d1622d7f526311d87d7da2ee7dd14b73e45d3fc Ok. If you have performance numbers for before/after these patches for your actual workload, I'd suggest posting them to stable@kernel.org, and maybe those rwsem fixes will get back-ported. The patches are pretty small, and should be fairly safe. So they are certainly stable material. Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org