From owner-freebsd-questions Sun Feb 11 20:38:11 2001 Delivered-To: freebsd-questions@freebsd.org Received: from mail.freebsd-corp-net-guide.com (mail.freebsd-corp-net-guide.com [206.29.169.15]) by hub.freebsd.org (Postfix) with ESMTP id B932437B401 for ; Sun, 11 Feb 2001 20:38:00 -0800 (PST) Received: from tedm.placo.com (nat-rtr.freebsd-corp-net-guide.com [206.29.168.154]) by mail.freebsd-corp-net-guide.com (8.11.1/8.11.1) with SMTP id f1C4bm310201; Sun, 11 Feb 2001 20:37:48 -0800 (PST) (envelope-from tedm@toybox.placo.com) From: "Ted Mittelstaedt" To: "Mike Meyer" Cc: Subject: RE: Problems installing 4.x on large disks Date: Sun, 11 Feb 2001 20:37:56 -0800 Message-ID: <001b01c094ad$91e79420$1401a8c0@tedm.placo.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3155.0 In-Reply-To: <14982.29199.754559.647316@guru.mired.org> Importance: Normal Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG OK Mike, Since your obviously dying for a comparison, here's the output of bonnie run on one of the spools on our news server. This is on a stripe set of 3 9GB SCSI disks that has been built with the command: newfs -f 512 -i 2048 /dev/rccd1c on a ccd that was created with an /etc/ccd.conf file of ccd1 65536 0 /dev/sd4s1e /dev/sd5s1e /dev/sd6s1e According to the docs for ccd this is supposed to optimize the ccd for writing lots and lots of itty-bitty files. Bonnie uses a single large file so I would think the results would be affected somewhat. I never did bother experimenting with other values of interleaving in the ccd to see if it would make a difference. Needless to say I shut down inn while this was run, and since there was nothing else sharing the CPU on the system at the time, the CPU figures are high. Also, this spool has been in continuous operation for about 5 months and can vary from a low of 5% to a high of 95% capacity in a single day. When this was run the spool was 86% full so Bonnie's test file was probably fragmented tremendously. This system is FreeBSD 2.2.8 by the way. # bonnie -s 256 File './Bonnie.12717', size: 268435456 Writing with putc()...done Rewriting...done Writing intelligently...done Reading with getc()...done Reading intelligently...done Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 256 3820 97.0 8054 88.4 4753 59.5 6434 94.3 9524 27.7 195.3 11.0 # Here is the dmsg fragment covering the disks. ahc2 rev 1 int a irq 10 on pci0:4:0 ahc2: aic7880 Wide Channel, SCSI Id=7, 16/255 SCBs ahc2 waiting for scsi devices to settle ahc2: target 0 Tagged Queuing Device (ahc2:0:0): "SEAGATE ST39102LW 0005" type 0 fixed SCSI 2 sd4(ahc2:0:0): Direct-Access 8683MB (17783240 512 byte sectors) ahc2: target 1 Tagged Queuing Device (ahc2:1:0): "SEAGATE ST39102LW 0005" type 0 fixed SCSI 2 sd5(ahc2:1:0): Direct-Access 8683MB (17783240 512 byte sectors) ahc2: target 2 Tagged Queuing Device (ahc2:2:0): "SEAGATE ST39102LW 0005" type 0 fixed SCSI 2 sd6(ahc2:2:0): Direct-Access 8683MB (17783240 512 byte sectors) Ted Mittelstaedt tedm@toybox.placo.com Author of: The FreeBSD Corporate Networker's Guide Book website: http://www.freebsd-corp-net-guide.com > -----Original Message----- > From: owner-freebsd-questions@FreeBSD.ORG > [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Mike Meyer > Sent: Sunday, February 11, 2001 3:06 AM > To: Ted Mittelstaedt > Cc: questions@FreeBSD.ORG > Subject: RE: Problems installing 4.x on large disks > > > Ted Mittelstaedt types: > > > Just the opposite in this case. The SCSI drive was a Seagate Barracude > > > 9LP on a 7890, 7200 PRM with a 7.4ms seek time. The IDE drive was a > > > Maxtor DiamondMax plus, 7200rpm with a 9ms seek time. The test > > > software was bonnie. > > I'm assuming that since you didn't say AHA2940U2 that this was > an on-board > > AIC 7890. Those usually have a BIOS configuration that needs to be set > > to tell it to negotiate at the highest speed the drive would operate it. > > I'm not familiar with bonnie to know what it is testing. > > All the negotiations were enabled. Bonnie is in the ports tree for you > to look at. Better yet, run your own tests, and report the results > back. I believed pretty much what you're saying until I ran my own > tests - prompted by people saying what I'm telling you now. > > -- > Mike Meyer > http://www.mired.org/home/mwm/ > Independent WWW/Perforce/FreeBSD/Unix consultant, email for more > information. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message