Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753720Ab0DONN7 (ORCPT ); Thu, 15 Apr 2010 09:13:59 -0400 Received: from mx1.redhat.com ([209.132.183.28]:29074 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753486Ab0DONN5 (ORCPT ); Thu, 15 Apr 2010 09:13:57 -0400 From: Jeff Moyer To: Jens Axboe Cc: linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org, vgoyal@redhat.com Subject: Re: [PATCH 0/4 v3] ext3/4: enhance fsync performance when using CFQ References: <1271279826-30294-1-git-send-email-jmoyer@redhat.com> <20100415103345.GY27497@kernel.dk> <20100415130854.GA27497@kernel.dk> 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: Thu, 15 Apr 2010 09:13:51 -0400 In-Reply-To: <20100415130854.GA27497@kernel.dk> (Jens Axboe's message of "Thu, 15 Apr 2010 15:08:55 +0200") 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: 909 Lines: 24 Jens Axboe writes: >> > This is starting to look better. Can you share what tests you did? I >> > tried reproducing with fs_mark last time and could not. >> >> Did you use the fs_mark command line I (think I) had posted? What >> storage were you using? > > No, I didn't see any references to example command lines. I tested on a > few single disks, rotating and SSD. I expected the single spinning disk > to show the problem to some extent at least, but there was no difference > observed with 64kb blocks. Boy, I'm really slipping. Try this one: ./fs_mark -S 1 -D 100 -N 1000 -d /mnt/test/fs_mark -s 65536 -t 1 -w 4096 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/