From: Jacek Luczak Subject: Re: getdents - ext4 vs btrfs performance Date: Fri, 2 Mar 2012 15:16:12 +0100 Message-ID: References: <20120301143859.GX5054@shiny> <20120302140038.GD5054@shiny> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE To: Chris Mason , Jacek Luczak , Theodore Tso , linux-ext4@vger.kernel.org, linux-fsdevel , LKML , linux-btrfs@vger.kernel.org Return-path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:55771 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752796Ab2CBOQO convert rfc822-to-8bit (ORCPT ); Fri, 2 Mar 2012 09:16:14 -0500 In-Reply-To: <20120302140038.GD5054@shiny> Sender: linux-ext4-owner@vger.kernel.org List-ID: 2012/3/2 Chris Mason : > On Fri, Mar 02, 2012 at 11:05:56AM +0100, Jacek Luczak wrote: >> >> I've took both on tests. The subject is acp and spd_readdir used wit= h >> tar, all on ext4: >> 1) acp: http://91.234.146.107/~difrost/seekwatcher/acp_ext4.png >> 2) spd_readdir: http://91.234.146.107/~difrost/seekwatcher/tar_ext4_= readir.png >> 3) both: http://91.234.146.107/~difrost/seekwatcher/acp_vs_spd_ext4.= png >> >> The acp looks much better than spd_readdir but directory copy with >> spd_readdir decreased to 52m 39sec (30 min less). > > Do you have stats on how big these files are, and how fragmented they > are? =A0For acp and spd to give us this, I think something has gone w= rong > at writeback time (creating individual fragmented files). How big? Which files? -Jacek -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html