From owner-freebsd-current@FreeBSD.ORG Mon Sep 10 12:38:35 2012 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 03549106566B for ; Mon, 10 Sep 2012 12:38:35 +0000 (UTC) (envelope-from ap@bnc.net) Received: from mailomat.net (mailomat.net [81.20.89.254]) by mx1.freebsd.org (Postfix) with ESMTP id 8CCD98FC08 for ; Mon, 10 Sep 2012 12:38:33 +0000 (UTC) X-Mailomat-SpamCatcher-Score: 2 [X] X-Mailomat-Junk-Score: 0 [] X-Mailomat-Cloudmark-Score: 0 [] Received: from [194.39.192.125] (account bnc-mail@mailrelay.mailomat.net HELO bnc.net) by mailomat.net (CommuniGate Pro SMTP 5.4.5) with ESMTPSA id 58343435 for freebsd-current@freebsd.org; Mon, 10 Sep 2012 14:38:32 +0200 X-Junk-Score: 10 [X] X-SpamCatcher-Score: 10 [X] Received: from [192.168.200.189] (account ap@bnc.net HELO [192.168.200.189]) by bnc.net (CommuniGate Pro SMTP 6.0c1) with ESMTPSA id 6841762 for freebsd-current@freebsd.org; Mon, 10 Sep 2012 14:39:17 +0200 From: Achim Patzner Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Date: Mon, 10 Sep 2012 14:38:31 +0200 Message-Id: <6A0C3360-0A1E-4905-A33E-D6CC590D7A5A@bnc.net> To: freebsd-current@freebsd.org Mime-Version: 1.0 (Apple Message framework v1278) X-Mailer: Apple Mail (2.1278) Subject: mfi driver performance X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Sep 2012 12:38:35 -0000 Hi! We=92re testing a new Intel S2600GL-based server with their recommended = RAID adapter ("Intel(R) Integrated RAID Module RMS25CB080=94) which is = identified as mfi0: port 0x2000-0x20ff mem = 0xd0c60000-0xd0c63fff,0xd0c00000-0xd0c3ffff irq 34 at device 0.0 on pci5 mfi0: Using MSI mfi0: Megaraid SAS driver Ver 4.23=20 mfi0: MaxCmd =3D 3f0 MaxSgl =3D 46 state =3D b75003f0=20 or mfi0@pci0:5:0:0: class=3D0x010400 card=3D0x35138086 = chip=3D0x005b1000 rev=3D0x03 hdr=3D0x00 vendor =3D 'LSI Logic / Symbios Logic' device =3D 'MegaRAID SAS 2208 [Thunderbolt]' class =3D mass storage subclass =3D RAID and seems to be doing quite well. As long as it isn=92t used=85 When the system is getting a bit more IO load it is getting close to = unusable as soon as there are a few writes (independent of = configuration, it is even sucking as a glorified S-ATA controller). = Equipping it with an older (unsupported) controller like an SRCSASRB (mfi0@pci0:10:0:0: class=3D0x010400 card=3D0x100a8086 = chip=3D0x00601000 rev=3D0x04 hdr=3D0x00 vendor =3D 'LSI Logic / Symbios Logic' device =3D 'MegaRAID SAS 1078' class =3D mass storage subclass =3D RAID) solves the problem but won=92t make Intel=92s = support happy. Has anybody similar experiences with the mfi driver? Any good ideas = besides running an unsupported configuration? Achim