Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755244AbYB0RIP (ORCPT ); Wed, 27 Feb 2008 12:08:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751187AbYB0RIF (ORCPT ); Wed, 27 Feb 2008 12:08:05 -0500 Received: from systemlinux.org ([83.151.29.59]:43282 "EHLO m18s25.vlinux.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750743AbYB0RIE (ORCPT ); Wed, 27 Feb 2008 12:08:04 -0500 Date: Wed, 27 Feb 2008 18:05:28 +0100 From: Andre Noll To: Tony Battersby Cc: Arnd Hannemann , adam radford , 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: <20080227170528.GB29468@skl-net.de> References: <20080226174314.GA30767@skl-net.de> <47C49B99.1060707@nets.rwth-aachen.de> <20080227101154.GD30767@skl-net.de> <47C57327.6070901@cybernetics.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ZoaI/ZTpAVc4A5k6" Content-Disposition: inline In-Reply-To: <47C57327.6070901@cybernetics.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: 1746 Lines: 55 --ZoaI/ZTpAVc4A5k6 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 09:26, Tony Battersby wrote: > > Thanks, this helped a lot. However, there does not seem to be a way > > to make the system more responsive, which is really the problem we > > are experiencing. > > > > Andre > > =20 > This is not 3ware-specific, but kernel 2.6.24 has new per-device write > throttling that might help with the responsiveness issue: >=20 > http://kernelnewbies.org/LinuxChanges#head-92340ffcec39e7c2a09fd933243fb1= 8eda57f1b4 > http://lwn.net/Articles/245600/ Yes, but we tried both 2.6.24 and 2.6.25-rc, so Peter's new write-throttling code doesn't seem to help much in our situtation. I'll play a bit with the various /proc/sys/vm/* knobs to see if that makes the system more responsive. > Also, check to see if the 3ware controller has a background initialize > or verify in progress, since that will obviously slow things down until > it is complete. That's certainly not the case. Thanks Andre --=20 The only person who always got his work done by Friday was Robinson Crusoe --ZoaI/ZTpAVc4A5k6 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) iD8DBQFHxZhYWto1QDEAkw8RAnlzAKCmNHfQ9RaCVFs7nUbEgVOFSDhWfQCcDRjt 3CZfYIebsu+qQmjf/GCkSDg= =wI2G -----END PGP SIGNATURE----- --ZoaI/ZTpAVc4A5k6-- -- 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/