From owner-freebsd-stable@FreeBSD.ORG Thu Feb 17 19:07:23 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4FA7F106566B for ; Thu, 17 Feb 2011 19:07:23 +0000 (UTC) (envelope-from telbizov@gmail.com) Received: from mail-qy0-f175.google.com (mail-qy0-f175.google.com [209.85.216.175]) by mx1.freebsd.org (Postfix) with ESMTP id ED3948FC08 for ; Thu, 17 Feb 2011 19:07:22 +0000 (UTC) Received: by qyk8 with SMTP id 8so4489944qyk.13 for ; Thu, 17 Feb 2011 11:07:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=EmoiwUvuUA5IDZOrq8YFIt1B21t/MkIBmj20AbJQeeA=; b=VAzaSM73Pp7gSVjgTUiMhrF87JnCkxjrh+10NZ98XWqFDj/Rt1bpFU4Tm5UW5MQmSO p8GeKyy9+fBPBpbj6gUqsSim+rV/fdgCKp/NG+bCDQ1/EzCT7zgioQjPNd6BSEyRaZ4d 1TozhfbfEd6wC6T+xecr39qIVfXT6JvaUOSsg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=Ug38TSjZkJE1jUTZb2ING4MUG6tOm2xiC4VNysrMsIkQ/ffszZGSwVcLAVfxzkgOUc 5Hsigvt/qvlJaOxESdEEXKlZniClmLSfJMnjN9KNbcO/2MIu87xE095sNQl/v3/kguNg +F0LOCaiHxYE/qHtz7aU7RQOSpZaE87Qa6tI4= MIME-Version: 1.0 Received: by 10.224.28.199 with SMTP id n7mr3100236qac.31.1297969641995; Thu, 17 Feb 2011 11:07:21 -0800 (PST) Received: by 10.229.0.207 with HTTP; Thu, 17 Feb 2011 11:07:21 -0800 (PST) In-Reply-To: <4D5D1075.2060708@my.gd> References: <4D5BF78E.7010306@digsys.bg> <4D5BFCC1.3010404@my.gd> <20110217110230.GB25240@e-Gitt.NET> <4D5D0165.1030000@my.gd> <20110217111010.GC25240@e-Gitt.NET> <4D5D1075.2060708@my.gd> Date: Thu, 17 Feb 2011 11:07:21 -0800 Message-ID: From: Rumen Telbizov To: Damien Fleuriot Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: "freebsd-stable@freebsd.org" Subject: Re: LSI SAS 2008 (mfi) on SuperMicro X8SI6-F 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: Thu, 17 Feb 2011 19:07:23 -0000 Hello Damien, list: I've been following this discussion with great interest and I hope the result of it will be the merge of a stable driver in STABLE branch soon. I brought this not a long ago ( http://lists.freebsd.org/pipermail/freebsd-stable/2011-January/061237.html) and I was hoping to have this driver in 8.x before 8.3 release. > What is sad is that these controllers are becoming very mainstream now, > we're getting them more and more on Dell servers , and the fbsd project > still struggles with them (for reasons I don't know, might be LSI's > fault, might be a lack of resources or interest...) > I couldn't agree more. I've been testing those (9211-8i) myself here on a bunch of SuperMicro servers and I'd say that I am very pleased with the performance of those HBAs (not the mention the price ~$230-250 CAD). On a 12 x SAS disks with a direct attached backplane 826A (6Gbit SAS2.0) in RAID0 across all of them (md linux software raid) I was able to squeeze * 2.1GBytes/s* sequential write (dd kind of style write). With the same setup and SATA disks I get to 1.2GByte/s. I did use 2 controllers to accomodate ports for all the disks. I get the same speed with ZFS and 9.0-CURRENT. On a related note I must say that I do have serious problems with the bandwidth when I use the SAS expander version of this backplane (826E26) (I cannot get more than 200-250 MBytes/s). I've been investigating this problem with LSI's help and still no conclusion. It looks like I am using only one channel. Anyway this was just my humble attempt to encourage the MFC of this driver. I think the card is pretty good. I'd like to hear other people's opinion on this HBA though. Regards, -- Rumen Telbizov http://telbizov.com