Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753913AbZI0M1y (ORCPT ); Sun, 27 Sep 2009 08:27:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753894AbZI0M1y (ORCPT ); Sun, 27 Sep 2009 08:27:54 -0400 Received: from mail-bw0-f210.google.com ([209.85.218.210]:61484 "EHLO mail-bw0-f210.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753889AbZI0M1x (ORCPT ); Sun, 27 Sep 2009 08:27:53 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=fMacpDhaqz17vLpRVCdA2urXbcglm6TRK8bmWYOY9CjURlw7e5ZB3XF0UAClnibBmq e5I3bHBeo4lkeySBQTgsiSixLkP/m3pUCBogHbIvyJtPSgTYo8gABg1uK4njRegxtbHx K9NjO2aYQHB+jmLxP8ZobAxI/FHxnH+Uj3Tjc= MIME-Version: 1.0 Date: Sun, 27 Sep 2009 14:27:55 +0200 Message-ID: Subject: ext4/reiser3/btr directory create/read perf From: wbrana@gmail.com To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 745 Lines: 27 Hello, I executed benchmark which creates and reads 10000 directories. It is much slower with ext4 than with reiser3 or btrfs. ext4 without dir_index void cfs::vdirs_create(): 7754 msec void cfs::vdirs_read(): 3363 msec reiser3 void cfs::vdirs_create(): 1173 msec void cfs::vdirs_read(): 421 msec btrfs void cfs::vdirs_create(): 1331 msec void cfs::vdirs_read(): 567 msec MD RAID10-f2, 64 kB chunk size Source code: http://www.sendspace.com/file/bconaa depends on Qt Core, has hard-coded paths -- 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/