Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262446AbTIOF5V (ORCPT ); Mon, 15 Sep 2003 01:57:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262450AbTIOF5U (ORCPT ); Mon, 15 Sep 2003 01:57:20 -0400 Received: from webhosting.rdsbv.ro ([213.157.185.164]:38311 "EHLO hosting.rdsbv.ro") by vger.kernel.org with ESMTP id S262446AbTIOF5T (ORCPT ); Mon, 15 Sep 2003 01:57:19 -0400 Date: Mon, 15 Sep 2003 08:57:00 +0300 (EEST) From: Catalin BOIE X-X-Sender: util@hosting.rdsbv.ro To: Marcelo Penna Guerra cc: linux-kernel@vger.kernel.org Subject: Re: SII SATA request size limit In-Reply-To: <200309112357.41592.eu@marcelopenna.org> Message-ID: References: <200309112357.41592.eu@marcelopenna.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1555 Lines: 39 > In recent kernels, the siimage driver limits the max kb per request size to 15 > (7.5kb). As I was having no problems with rqsize of 128 (64kb), I decided to > comment out this part of the code and my system is rock solid. > > I'm not suggesting that it should be removed, as it probably is necessary on > other systems, but as the performance impact is huge (with 15 hdparm tests > show an average 26mb/s and with 128 it's 47mb/s), I think the user should be > warnned of this and there could be a option to set it to 128 in 2.6.x > kernels, so people can try to see if it's stable. I really don't beleive that > I have such an unique hardware configuration, so this should benefit other > people. I'm using 256 or 128, I don't remember exactly with a sii3112. It is rock solid. > > Marcelo Penna Guerra > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.2.3 (GNU/Linux) > > iD8DBQE/YTYjD/U0kdg4PFoRAhBnAJ0TyeJx5nrxzDS5Rib5AEWQHx4iSACeKcn8 > wg7cUhLobywfTCcPl8GqNCc= > =VuVw > -----END PGP SIGNATURE----- > - > 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/ > --- Catalin(ux) BOIE catab@deuroconsult.ro - 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/