Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752257AbZDMRmo (ORCPT ); Mon, 13 Apr 2009 13:42:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751304AbZDMRm3 (ORCPT ); Mon, 13 Apr 2009 13:42:29 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:34700 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751122AbZDMRm1 (ORCPT ); Mon, 13 Apr 2009 13:42:27 -0400 Date: Mon, 13 Apr 2009 19:41:04 +0200 From: Ingo Molnar To: Andrew Morton Cc: Linus Torvalds , Valdis.Kletnieks@vt.edu, Mike Travis , Linux Kernel Mailing List , mm-commits@vger.kernel.org, Rusty Russell , Dave Jones , Len Brown Subject: Re: mmotm 2009-04-10-02-21 uploaded - forkbombed by work_for_cpu Message-ID: <20090413174104.GA856@elte.hu> References: <200904100922.n3A9MOIV013828@imap1.linux-foundation.org> <4609.1239456126@turing-police.cc.vt.edu> <20090413171853.GA4601@elte.hu> <20090413102749.4ca3a217.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090413102749.4ca3a217.akpm@linux-foundation.org> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1257 Lines: 37 * Andrew Morton wrote: > > I think Andrew has a stack of fixes queued up, one of which > > should solve this problem too - which Mike tested - as the > > commit from Andrew has caused another regression as well. > > > > There's no sha1 - the patch is in this thread on lkml: > > > > sysbench(oltp)+mysql 10% regression with 2.6.30-rc1 > > > > | From: Andrew Morton > > | > > | Atttempting to rid us of the problematic work_on_cpu(). Just use > > | smp_call_fuction_single() here. > > | > > | This repairs a 10% sysbench(oltp)+mysql regression which Mike > > | reported, > > > > Yup. It's presently in Len's hands. And Rusty's. > > Vladis, perhaps you can verify? I have not tested it but it looks good and the use of a much more atomic primitive can only improve the situation - so unless there's something suspicious about it i'd suggest for Linus to pick this up from email, before -rc2. Acked-by: Ingo Molnar Ingo -- 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/