From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with ESMTP id 0BC356B01B9 for ; Tue, 23 Mar 2010 19:37:32 -0400 (EDT) Date: Wed, 24 Mar 2010 00:36:40 +0100 From: Ingo Molnar Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance Message-ID: <20100323233640.GA16798@elte.hu> 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 Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Linus Torvalds Cc: Anton Starikov , Greg KH , stable@kernel.org, Andrew Morton , linux-mm@kvack.org, Linux Kernel Mailing List , bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra List-ID: * Linus Torvalds wrote: > > > 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. We havent had any stability problems with them, except one trivial build bug, so -stable would be nice. Ingo -- 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