From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753827Ab0CWTuj (ORCPT ); Tue, 23 Mar 2010 15:50:39 -0400 Received: from mail-fx0-f223.google.com ([209.85.220.223]:53751 "EHLO mail-fx0-f223.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753442Ab0CWTuX convert rfc822-to-8bit (ORCPT ); Tue, 23 Mar 2010 15:50:23 -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=E3/4tCFvRro3wdEvk9SBcoC0b5JlFZptm9cdaRuJ9Lo/TR1DQai/dbTSSgL+RcweSO h7zhwPL+YcTDK3LgxERgLLbUF/sdgoBLkjUOeWSBpDhXhqAAPNIrlJtfCGT9+orO0qq8 NmxmevUmz8V7cOJdKtZBk9FO2ibFu3XL+yuiw= 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: <20100323192213.GA6169@sgi.com> Date: Tue, 23 Mar 2010 20:50:18 +0100 Cc: Andrew Morton , Ingo Molnar , Linus Torvalds , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra Content-Transfer-Encoding: 8BIT Message-Id: <2311E292-F8FE-4C80-A0DA-738CFAE71C50@gmail.com> References: <20100323102208.512c16cc.akpm@linux-foundation.org> <20100323173409.GA24845@elte.hu> <20100323180002.GA2965@elte.hu> <15090451-C292-44D6-B2BA-DCBCBEEF429D@gmail.com> <20100323112141.7f248f2b.akpm@linux-foundation.org> <41DAB29F-59B7-4D38-A389-75FAC47225BF@gmail.com> <20100323192213.GA6169@sgi.com> To: Robin Holt X-Mailer: Apple Mail (2.1077) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mar 23, 2010, at 8:22 PM, Robin Holt wrote: > On Tue, Mar 23, 2010 at 07:25:43PM +0100, Anton Starikov wrote: >> On Mar 23, 2010, at 7:21 PM, Andrew Morton wrote: >>>> I will apply this commits to 2.6.32, I afraid current OFED (which I need also) will not work on 2.6.33+. >>>> >>> >>> You should be able to simply set CONFIG_RWSEM_GENERIC_SPINLOCK=n, >>> CONFIG_RWSEM_XCHGADD_ALGORITHM=y by hand, as I mentioned earlier? >> >> Hm. I tried, but when I do "make oldconfig", then it gets rewritten, so I assume that it conflicts with some other setting from default fedora kernel config. trying to figure out which one exactly. > > Have you tracked this down yet? I just got the patches applied against > an older kernel and am running into the same issue. I think you can prevent overwriting this options if you set them in arch/x86/configs/x86_64_defconfig Anton 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 SMTP id D78636B01D0 for ; Tue, 23 Mar 2010 15:50:24 -0400 (EDT) Received: by fxm10 with SMTP id 10so1142022fxm.30 for ; Tue, 23 Mar 2010 12:50:21 -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: <20100323192213.GA6169@sgi.com> Date: Tue, 23 Mar 2010 20:50:18 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <2311E292-F8FE-4C80-A0DA-738CFAE71C50@gmail.com> References: <20100323102208.512c16cc.akpm@linux-foundation.org> <20100323173409.GA24845@elte.hu> <20100323180002.GA2965@elte.hu> <15090451-C292-44D6-B2BA-DCBCBEEF429D@gmail.com> <20100323112141.7f248f2b.akpm@linux-foundation.org> <41DAB29F-59B7-4D38-A389-75FAC47225BF@gmail.com> <20100323192213.GA6169@sgi.com> Sender: owner-linux-mm@kvack.org To: Robin Holt Cc: Andrew Morton , Ingo Molnar , Linus Torvalds , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra List-ID: On Mar 23, 2010, at 8:22 PM, Robin Holt wrote: > On Tue, Mar 23, 2010 at 07:25:43PM +0100, Anton Starikov wrote: >> On Mar 23, 2010, at 7:21 PM, Andrew Morton wrote: >>>> I will apply this commits to 2.6.32, I afraid current OFED (which I = need also) will not work on 2.6.33+. >>>>=20 >>>=20 >>> You should be able to simply set CONFIG_RWSEM_GENERIC_SPINLOCK=3Dn, >>> CONFIG_RWSEM_XCHGADD_ALGORITHM=3Dy by hand, as I mentioned earlier? >>=20 >> Hm. I tried, but when I do "make oldconfig", then it gets rewritten, = so I assume that it conflicts with some other setting from default = fedora kernel config. trying to figure out which one exactly. >=20 > Have you tracked this down yet? I just got the patches applied = against > an older kernel and am running into the same issue. I think you can prevent overwriting this options if you set them in = arch/x86/configs/x86_64_defconfig Anton -- 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