Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758832AbYB1Js6 (ORCPT ); Thu, 28 Feb 2008 04:48:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755130AbYB1Jsu (ORCPT ); Thu, 28 Feb 2008 04:48:50 -0500 Received: from systemlinux.org ([83.151.29.59]:59565 "EHLO m18s25.vlinux.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755291AbYB1Jst (ORCPT ); Thu, 28 Feb 2008 04:48:49 -0500 Date: Thu, 28 Feb 2008 10:46:20 +0100 From: Andre Noll To: Chris Snook Cc: adam radford , Tony Battersby , Johannes =?iso-8859-1?Q?W=F6rner?= , James Bottomley , linux-scsi , linux-kernel Subject: Re: Performance problems with 3ware 9500S-4LP and 2.6.25-rc3 Message-ID: <20080228094620.GD29468@skl-net.de> References: <20080226174314.GA30767@skl-net.de> <47C45B80.6090907@redhat.com> <20080227101143.GC30767@skl-net.de> <47C5C048.9080704@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="wLAMOaPNJ0fu1fTG" Content-Disposition: inline In-Reply-To: <47C5C048.9080704@redhat.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1335 Lines: 47 --wLAMOaPNJ0fu1fTG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 14:55, Chris Snook wrote: > Does the machine become unresponsive during the single-threaded test, or= =20 > only when doing the rsync? It takes noticably longer to ssh into the machine also in the single-threaded case (using dd to write to the device), but the system remains usable. When the rsync job is running, it becomes unusable quickly. However, reducing the queue depth with echo 16 > /sys/block/sda/device/queue_depth as suggested by Adam, solves all problems. Thanks all for your help. Andre --=20 The only person who always got his work done by Friday was Robinson Crusoe --wLAMOaPNJ0fu1fTG Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFHxoLsWto1QDEAkw8RAoAHAJ0TFMt26ioLR/WskxAUW5Td+OqmRQCeNcH3 EDQQFgyymODIGTVteQrHULA= =nnxa -----END PGP SIGNATURE----- --wLAMOaPNJ0fu1fTG-- -- 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/