Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966832Ab0B0B2t (ORCPT ); Fri, 26 Feb 2010 20:28:49 -0500 Received: from mx1.redhat.com ([209.132.183.28]:4632 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966806Ab0B0B2r (ORCPT ); Fri, 26 Feb 2010 20:28:47 -0500 Message-ID: <4B887548.50508@redhat.com> Date: Fri, 26 Feb 2010 19:28:40 -0600 From: Eric Sandeen User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812) MIME-Version: 1.0 To: Justin Piszcz CC: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, Alan Piszcz Subject: Re: EXT4 is ~2X as slow as XFS (593MB/s vs 304MB/s) for writes? References: <4B886CA1.9050906@redhat.com> <4B887160.2090606@redhat.com> In-Reply-To: <4B887160.2090606@redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 868 Lines: 27 Eric Sandeen wrote: > Justin Piszcz wrote: > ... > >>> Were the filesystems created to align with raid geometry? >> Only default options were used except the mount options. If that is the >> culprit, I have some more testing to do, thanks, will look into it. >> >>> mkfs.xfs has done that forever; mkfs.ext4 only will do so (automatically) >>> with recent kernel+e2fsprogs. >> How recent? > > You're recent enough. :) Oh, you need very recent util-linux-ng as well, and use libblkid from there with: [e2fsprogs] # ./configure --disable-libblkid Otherwise you can just feed mkfs.ext4 stripe & stride manually. -Eric -- 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/