Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758162AbYBVQuQ (ORCPT ); Fri, 22 Feb 2008 11:50:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752841AbYBVQtz (ORCPT ); Fri, 22 Feb 2008 11:49:55 -0500 Received: from mx1.redhat.com ([66.187.233.31]:59540 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751706AbYBVQtx (ORCPT ); Fri, 22 Feb 2008 11:49:53 -0500 Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <200802220852.26584.chris.mason@oracle.com> References: <200802220852.26584.chris.mason@oracle.com> <28196.1203605703@redhat.com> <20080220160557.4715.66608.stgit@warthog.procyon.org.uk> <17916.1203636833@redhat.com> To: Chris Mason Cc: dhowells@redhat.com, Daniel Phillips , Trond.Myklebust@netapp.com, chuck.lever@oracle.com, casey@schaufler-ca.com, nfsv4@linux-nfs.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, selinux@tycho.nsa.gov, linux-security-module@vger.kernel.org Subject: Re: [PATCH 00/37] Permit filesystem local caching X-Mailer: MH-E 8.0.3+cvs; nmh 1.2-20070115cvs; GNU Emacs 23.0.50 Date: Fri, 22 Feb 2008 16:47:27 +0000 Message-ID: <25210.1203698847@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1994 Lines: 77 Chris Mason wrote: > Thanks for trying this, of course I'll ask you to try again with the latest > v0.13 code, it has a number of optimizations especially for CPU usage. Here you go. The numbers are very similar. David ================================= FEW BIG FILES TEST ON BTRFS v0.13 ================================= Completely cold caches: [root@andromeda ~]# time cat /warthog/bigfile >/dev/null real 0m2.202s user 0m0.000s sys 0m1.716s [root@andromeda ~]# time cat /warthog/biggerfile >/dev/null real 0m4.212s user 0m0.000s sys 0m0.896s Warm BTRFS pagecache, cold NFS pagecache: [root@andromeda ~]# time cat /warthog/bigfile >/dev/null real 0m0.197s user 0m0.000s sys 0m0.192s [root@andromeda ~]# time cat /warthog/biggerfile >/dev/null real 0m0.376s user 0m0.000s sys 0m0.372s Warm on-disk cache, cold pagecaches: [root@andromeda ~]# time cat /warthog/bigfile >/dev/null real 0m1.543s user 0m0.004s sys 0m1.448s [root@andromeda ~]# time cat /warthog/biggerfile >/dev/null real 0m3.111s user 0m0.000s sys 0m2.856s ================================================== MANY SMALL/MEDIUM FILE READING TEST ON BTRFS v0.13 ================================================== Completely cold caches: [root@andromeda ~]# time tar cf - /warthog/aaa >/dev/zero real 0m31.575s user 0m0.176s sys 0m6.316s Warm BTRFS pagecache, cold NFS pagecache: [root@andromeda ~]# time tar cf - /warthog/aaa >/dev/zero real 0m16.081s user 0m0.164s sys 0m5.528s Warm on-disk cache, cold pagecaches: [root@andromeda ~]# time tar cf - /warthog/aaa >/dev/zero real 2m15.245s user 0m0.064s sys 0m2.808s -- 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/