Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756580Ab1CVRqT (ORCPT ); Tue, 22 Mar 2011 13:46:19 -0400 Received: from mx1.redhat.com ([209.132.183.28]:7362 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751615Ab1CVRqR (ORCPT ); Tue, 22 Mar 2011 13:46:17 -0400 From: Jeff Moyer To: Jan Kara Cc: "Alex\,Shi" , Corrado Zoccolo , "Li\, Shaohua" , Vivek Goyal , "tytso\@mit.edu" , "jaxboe\@fusionio.com" , "linux-kernel\@vger.kernel.org" , "Chen\, Tim C" Subject: Re: [performance bug] kernel building regression on 64 LCPUs machine References: <20110302094246.GA7496@quack.suse.cz> <20110302211748.GF7496@quack.suse.cz> <20110304153248.GC2649@quack.suse.cz> <1300779499.30136.353.camel@debian> <20110322161405.GB19716@quack.suse.cz> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 X-PCLoadLetter: What the f**k does that mean? Date: Tue, 22 Mar 2011 13:46:06 -0400 In-Reply-To: <20110322161405.GB19716@quack.suse.cz> (Jan Kara's message of "Tue, 22 Mar 2011 17:14:05 +0100") Message-ID: User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/23.1 (gnu/linux) 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 Content-Length: 738 Lines: 20 Jan Kara writes: > Jeff, I suppose the log files of fs_mark processes are on the same > device as the test directory, aren't they - that might explain the > flusher thread doing IO? The patch below No. My test environments are sane. The file system is on a completely separate disk and it is unmounted and remounted in between each run. That should take care of any lost flushes. Did you receive my last couple of private emails commenting on the trace data? Cheers, Jeff -- 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/