From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Leighton Subject: Re: Severe slowdown caused by jbd2 process Date: Fri, 21 Jan 2011 14:28:29 +0000 Message-ID: <1295620109.22802.1.camel@tybalt> References: <1295568782.2459.29.camel@tybalt> <20110121013140.GA8949@dhcp231-156.rdu.redhat.com> <1295601083.5799.3.camel@tybalt> <20110121125922.GB8949@dhcp231-156.rdu.redhat.com> <20110121140306.GA11313@dhcp231-156.rdu.redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-/BqI0MvOkioIFAj+RGrN" Cc: linux-ext4@vger.kernel.org To: Josef Bacik Return-path: Received: from benvolio.jonathanleighton.com ([173.255.230.218]:50066 "EHLO benvolio.jonathanleighton.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752332Ab1AUO2c (ORCPT ); Fri, 21 Jan 2011 09:28:32 -0500 In-Reply-To: <20110121140306.GA11313@dhcp231-156.rdu.redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: --=-/BqI0MvOkioIFAj+RGrN Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi there, On Fri, 2011-01-21 at 09:03 -0500, Josef Bacik wrote: > Heh so now that I've had a moment to wake up, how about running your test= on > ext3, but mount the partition with >=20 > mount -o barrier >=20 > and see if it's still faster than ext4. Thanks, You're right, that slows it down significantly on the ext3 partition. Is this expected behaviour with ext4 then? Thanks Jon --=-/BqI0MvOkioIFAj+RGrN Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJNOZgKAAoJEIeyJN+tUcli+nYH/1jYy0fRVvE9F/hYfIeATNh2 ddcrloeQy2plQwliPdMw5IpAcGJO9aJr1WrrEokPBATJDl3a9mXQoP0gcYLhKTV4 wT2Beuwu39BPByQkY3UTcpfgkPeRudn71ZPK7GZcg6TygtXk0o8bUKfVuRGHVzLi Nn8Fq9fhiZ1hXWbpYiMTLlZD0NHUE/j9CC3bviybEjZo1wlmmW4XvEu3D8ZcEyIY tCi7CHlSW/SrV9UVQmOYXOWGogk4pDApUJ5JTDiqM36SUPNfeta8yBxsxUTDGDGN ZYbXjL5Y6cSId5Wblj91s1RBuvpsit5HZ8LAosLyxT6m9DCX92uPC5wLwR4E0MY= =jutt -----END PGP SIGNATURE----- --=-/BqI0MvOkioIFAj+RGrN--