From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754593Ab0CWXTW (ORCPT ); Tue, 23 Mar 2010 19:19:22 -0400 Received: from mail-bw0-f209.google.com ([209.85.218.209]:49659 "EHLO mail-bw0-f209.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754317Ab0CWXTU convert rfc822-to-8bit (ORCPT ); Tue, 23 Mar 2010 19:19:20 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; b=pvqJkkAXaicbMWQlUTeQdY1xQyzfQgqRyAQxaBFjZJbsWcaQ7Hnql3nNliyM+KFgPC I1j08pL/NpkgFtEM2kDY2229UaWnyyWLUy9eHS+z5FlJ8HH0eHs35bTJB8bkQrCHzj2j vV9RAum5gtqV7CpHgjbdkjiqMpODO64TEvLbg= Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: text/plain; charset=us-ascii From: Anton Starikov In-Reply-To: Date: Wed, 24 Mar 2010 00:19:15 +0100 Cc: Greg KH , stable@kernel.org, Ingo Molnar , Andrew Morton , linux-mm@kvack.org, Linux Kernel Mailing List , bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra Content-Transfer-Encoding: 8BIT 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> To: Linus Torvalds X-Mailer: Apple Mail (2.1077) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tomorrow I will try to patch and check 2.6.33 and see are this patches enough to restore performance or not, because on 2.6.33 kernel performance issue also used to involve somehow crgoup business (and performance was terrible even comparing to broken 2.6.32). If it will not fix 2.6.33, then I will ask to reopen the bug, otherwise I will post to stable@. Thanks again for help, Anton. On Mar 24, 2010, at 12:04 AM, 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. > > Linus From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id 1679F6B01BC for ; Tue, 23 Mar 2010 19:19:24 -0400 (EDT) Received: by bwz19 with SMTP id 19so5709569bwz.6 for ; Tue, 23 Mar 2010 16:19:19 -0700 (PDT) Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: text/plain; charset=us-ascii From: Anton Starikov In-Reply-To: Date: Wed, 24 Mar 2010 00:19:15 +0100 Content-Transfer-Encoding: quoted-printable 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> Sender: owner-linux-mm@kvack.org To: Linus Torvalds Cc: Greg KH , stable@kernel.org, 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: Tomorrow I will try to patch and check 2.6.33 and see are this patches = enough to restore performance or not, because on 2.6.33 kernel = performance issue also used to involve somehow crgoup business (and = performance was terrible even comparing to broken 2.6.32). If it will = not fix 2.6.33, then I will ask to reopen the bug, otherwise I will post = to stable@. Thanks again for help, Anton. On Mar 24, 2010, at 12:04 AM, Linus Torvalds wrote: >=20 >=20 > On Tue, 23 Mar 2010, Anton Starikov wrote: >>=20 >> I think we got a winner! >>=20 >> Problem seems to be fixed. >>=20 >> Just for record, I used next patches: >>=20 >> 59c33fa7791e9948ba467c2b83e307a0d087ab49 >> 5d0b7235d83eefdafda300656e97d368afcafc9a >> 1838ef1d782f7527e6defe87e180598622d2d071 >> 4126faf0ab7417fbc6eb99fb0fd407e01e9e9dfe >> bafaecd11df15ad5b1e598adc7736afcd38ee13d >> 0d1622d7f526311d87d7da2ee7dd14b73e45d3fc >=20 > Ok. If you have performance numbers for before/after these patches for=20= > your actual workload, I'd suggest posting them to stable@kernel.org, = and=20 > maybe those rwsem fixes will get back-ported. >=20 > The patches are pretty small, and should be fairly safe. So they are=20= > certainly stable material. >=20 > 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