From owner-freebsd-performance@FreeBSD.ORG Mon Aug 10 23:53:54 2009 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 061E51065673 for ; Mon, 10 Aug 2009 23:53:54 +0000 (UTC) (envelope-from nathan@lenevez.net.au) Received: from smtp1.l33t.net.au (smtp1.l33t.net.au [IPv6:2400:5000:1337:a::71]) by mx1.freebsd.org (Postfix) with ESMTP id 899B28FC25 for ; Mon, 10 Aug 2009 23:53:53 +0000 (UTC) Received: from talon.lenevez.net.au (smtp-outbound.lenevez.net.au [119.15.98.178]) by smtp1.l33t.net.au (8.14.2/8.14.2) with ESMTP id n7ANroj3034475 for ; Tue, 11 Aug 2009 09:53:50 +1000 (EST) (envelope-from nathan@lenevez.net.au) Received: from talon.lenevez.net.au ([119.15.98.178]) by talon.lenevez.net.au ([119.15.98.178]) with mapi; Tue, 11 Aug 2009 09:52:14 +1000 From: Nathan Le Nevez To: "freebsd-performance@freebsd.org" Date: Tue, 11 Aug 2009 09:53:47 +1000 Thread-Topic: Very slow I/O performance on HP BL465c Thread-Index: AQHKGhU4FOVAZZOuqE2TtD8XIPHZGZCf92/Y Message-ID: In-Reply-To: Accept-Language: en-US, en-AU Content-Language: en X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US, en-AU Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (smtp1.l33t.net.au [119.15.98.71]); Tue, 11 Aug 2009 09:53:50 +1000 (EST) X-L33T-MailScanner-Information: Please contact the ISP for more information X-MailScanner-ID: n7ANroj3034475 X-L33T-MailScanner: Found to be clean X-L33T-MailScanner-From: nathan@lenevez.net.au X-Spam-Status: No Subject: Very slow I/O performance on HP BL465c X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Aug 2009 23:53:54 -0000 Hi, I'm running 7.2-p3 on 2x HP BL465c blade servers, one of which performs ver= y poorly. Both have the same RAID controller and 2 x 146GB 10k SAS disks configured in RAID-1. Both controllers have write-cache enabled. Both servers are running the same BIOS and firmware versions. Neither servers ar= e running any services other than sshd. Blade with good performance (2 x Opteron 2218, 8GB RAM): ciss0: port 0x4000-0x40ff mem 0xfdf80000-0xfdffffff,0xfdf70000-0xfdf77fff irq 19 at device 8.0 on pci80 ciss0: [ITHREAD] da0 at ciss0 bus 0 target 0 lun 0 da0: AFPi xCePdU D#i2r Leacuntc hAcecde!s s SCSI-5 device da0: 135.168MB/s transfers dSaM0P:: CAoP CPU #3 Launched! mmand Queueing Enabled da0: 139979MB (286677120 512 byte sectors: 255H 32S/T 35132C) Blade with bad performance (2 x Opteron 2352, 16GB RAM): ciss0: port 0x4000-0x40ff mem 0xfdf80000-0xfdffffff,0xfdf70000-0xfdf77fff irq 19 at device 8.0 on pci80 ciss0: [ITHREAD] da0 at ciss0 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-5 device da0: 135.168MB/s transfers da0: Command Queueing Enabled da0: 139979MB (286677120 512 byte sectors: 255H 32S/T 35132C) # dbench -t 10 1 2 3 4 blade1 183.456 MB/sec 236.86 MB/sec 299.28 MB/sec 192.675 MB/sec blade2 6.97931 MB/sec 9.42293 MB/sec 10.2482 MB/sec 12.407 MB/sec Any help/ideas would be greatly appreciated. I have run through all the Insight diagnostics tools and it fails to find anything wrong with the slow server. Cheers, Nathan=20