From owner-freebsd-stable@FreeBSD.ORG Tue Oct 31 12:31:29 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 25CEE16A492 for ; Tue, 31 Oct 2006 12:31:29 +0000 (UTC) (envelope-from fredrik.widlund@qbrick.com) Received: from mail.qbrick.com (mail.qbrick.com [62.13.40.40]) by mx1.FreeBSD.org (Postfix) with ESMTP id A41D143D4C for ; Tue, 31 Oct 2006 12:31:28 +0000 (GMT) (envelope-from fredrik.widlund@qbrick.com) Received: from localhost (localhost [127.0.0.1]) by mail.qbrick.com (Postfix) with ESMTP id B70BA5196B; Tue, 31 Oct 2006 13:30:49 +0100 (CET) Received: from mail.qbrick.com ([127.0.0.1]) by localhost (mail0.p0.w0.local [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 31981-02-2; Tue, 31 Oct 2006 13:30:48 +0100 (CET) Received: from [10.43.0.2] (fkwd0.p0.u3.local [10.43.0.2]) by mail.qbrick.com (Postfix) with ESMTP id C399551978; Tue, 31 Oct 2006 13:30:48 +0100 (CET) Message-ID: <4547421D.2010206@qbrick.com> Date: Tue, 31 Oct 2006 13:31:25 +0100 From: Fredrik Widlund User-Agent: Thunderbird 1.5.0.7 (Windows/20060909) MIME-Version: 1.0 To: Ivan Voras References: <45470D95.5020801@qbrick.com> <454718DD.8060108@qbrick.com> <45471ACC.2030604@fer.hr> In-Reply-To: <45471ACC.2030604@fer.hr> X-Enigmail-Version: 0.93.2.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Scanned: by amavisd-new at qbrick.com Cc: freebsd-stable@freebsd.org Subject: Re: SAS Raid - mfi driver X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 Oct 2006 12:31:29 -0000 256MB cache, no BBU. Tried a lot of different combinations of settings. fbsd 6.2pre writes 220MB/s with raid-0 If I boot windows server 2003 instead, it writes at around 180MB/s with raid-5 (same configs). With fbsd6.2pre, I get the "best" performance with BadBBU/direct io/disabled cache and 8 drives, maybe around 50 MB/s, however I get a zig-zag performance pattern, with the adapter running at 500% (gstat) utilization one second, then down to 0% for maybe 3 seconds, back, etc. Fredrik Ivan Voras wrote: > Fredrik Widlund wrote: >> Ivan Voras wrote: >>> Several: >>> >>> - are there cache differences between the controllers (amount of >>> memory, cache policy)? >> Default settings on both. > > Maybe you should check what the defaults are :) Especially the amount > of memory and is there a battery to back the cache. > >>> - how does writing directly to the device (bypassing file system) >>> compare? >> Drives are four seagate 7200.10 400GB in a Raid-5 configuration. >> >> [/mnt/test (/dev/mfid0p1 mounted)] >> read: 200MB/s >> write: 15MB/s >> >> [/dev/mfid0p1] >> read: 200MB/s >> write: 8MB/s >> >> [/dev/mfid0] >> read: 200MB/s >> write: 10MB/s > > This is bad :( The difference between p0 and raw device might indicate > a stripe size misalignment, but the values are too low in any case. > > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"