From owner-freebsd-scsi@FreeBSD.ORG Fri Nov 28 01:05:18 2003 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1B12516A4CE for ; Fri, 28 Nov 2003 01:05:17 -0800 (PST) Received: from mail.imp.ch (mail.imp.ch [157.161.1.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6D93D43FE5 for ; Fri, 28 Nov 2003 01:05:12 -0800 (PST) (envelope-from mb@imp.ch) Received: from cvs.imp.ch (cvs.imp.ch [157.161.4.9]) by mail.imp.ch (8.12.9p2/8.12.3) with ESMTP id hAS9576e091494 for ; Fri, 28 Nov 2003 10:05:09 +0100 (CET) (envelope-from Martin.Blapp@imp.ch) Date: Fri, 28 Nov 2003 10:05:06 +0100 (CET) From: Martin Blapp To: freebsd-scsi@freebsd.org Message-ID: <20031128100238.Q16675@cvs.imp.ch> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: Re: Very bad FreeBSD SCSI RAID5 write speed performance X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Nov 2003 09:05:18 -0000 Hi all, The performance issue with the IBM serveraid 5i has been solved. I've committed fixes which enabled the Cache as sideeffect. We have now ~40MB speed during write, ~60MB during read which is acceptable again. Thanks for the pointers and for your responses. Martin Martin Blapp, ------------------------------------------------------------------ ImproWare AG, UNIXSP & ISP, Zurlindenstrasse 29, 4133 Pratteln, CH Phone: +41 61 826 93 00 Fax: +41 61 826 93 01 PGP: PGP Fingerprint: B434 53FC C87C FE7B 0A18 B84C 8686 EF22 D300 551E ------------------------------------------------------------------