Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753360AbZISWym (ORCPT ); Sat, 19 Sep 2009 18:54:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752831AbZISWym (ORCPT ); Sat, 19 Sep 2009 18:54:42 -0400 Received: from mail-fx0-f216.google.com ([209.85.220.216]:36032 "EHLO mail-fx0-f216.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752695AbZISWyl convert rfc822-to-8bit (ORCPT ); Sat, 19 Sep 2009 18:54:41 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=Kj1RTB3KbesH2sI/TtD0MNGJm1blSsAUzdN0ereeI8Zr2HG7l7nE6Tut6NNY/CA0Nx GB102EkyM1xbTAyFzInnAi60NyYXg88yO8GXu1vWtQ0BzEYffqUVFKHBU5u2rM9+Snt3 Uyj8lPraHu2/2HKANktUASPEa2n+4xXdWw+Mk= MIME-Version: 1.0 In-Reply-To: References: Date: Sun, 20 Sep 2009 00:54:43 +0200 Message-ID: Subject: Re: EXT4 RAID read performance From: wbrana@gmail.com To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 871 Lines: 35 creating tar of compiled kernel takes much longer with ext4 time tar c linux-2.6.31 | cat >/dev/null reiser3: real 0m11.425s user 0m0.229s sys 0m1.586s ext4: real 0m23.942s user 0m0.183s sys 0m1.440s partition was remounted before test > > RAID details: > > md8 : active raid10 sda7[0] sdd7[3] sdc7[2] sdb7[1] >      62925824 blocks 256K chunks 2 far-copies [4/4] [UUUU] > > Ext4: > mkfs.ext4 -E stride=64,stripe-width=128 /dev/md8 > mount -t ext4 -o noatime,auto_da_alloc,commit=600 /dev/md8 /mnt/md8 > > Reiser3: > mkfs.reiserfs /dev/md8 > mount -t reiserfs -o noatime,notail /dev/md8 /mnt/md8 > -- 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/