From owner-freebsd-current Tue Feb 17 02:53:29 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id CAA25239 for freebsd-current-outgoing; Tue, 17 Feb 1998 02:53:29 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from top.worldcontrol.com (surf52.cruzers.com [205.215.232.52]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id CAA25211 for ; Tue, 17 Feb 1998 02:53:22 -0800 (PST) (envelope-from brian@worldcontrol.com) From: brian@worldcontrol.com Received: (qmail 1511 invoked by uid 100); 17 Feb 1998 10:54:46 -0000 Message-ID: <19980217025443.51503@top.worldcontrol.com> Date: Tue, 17 Feb 1998 02:54:43 -0800 To: freebsd-current@FreeBSD.ORG Subject: softupdates4 ruins performance of my wide drive 8-) Mail-Followup-To: freebsd-current@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.90.3i Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG softupdates4 + *********** SMP 2xPP150 w/64MB Adaptec 2940W with options AHC_TAGENABLE options AHC_SCBPAGING_ENABLE options AHC_ALLOW_MEMIO SEAGATE ST43400N 5400rpm SCSI2-FAST avg(r/w)seek 10/11ms (8 bit interface drive, tag enabled) (-j) build1-4 7840.03 real 6474.63 user 4048.94 sys 1.3422 130.66 build2-4 7898.67 real 6468.78 user 4070.07 sys 1.3342 131.64 build3-8 7959.24 real 6497.00 user 4085.74 sys 1.3297 132.65 build4-2 8787.30 real 6389.92 user 3846.45 sys 1.1649 146.46 SEAGATE ST15150W 7200rpm SCSI2-FAST-WIDE avg(r/w)seek 8/9ms (16 bit interface drive, tag enabled) build1-4 7479.70 real 6462.32 user 4061.98 sys 1.4070 124.66 So all the extra expense of the wide controller and wide drive bought me 6 minutes or a 4.5% improvement. Can't wait to upgrade to ultra-wide or ultra2-wide! or fire-wire! 8-) (satire impaired readers: it is likely that the softupdates are removing the drive as the bottlenecking factor, or at least reducing the influence of the drives in the overall performance, which is actually quite cool. I guess it is time to get out the old klunkers and put them back online. 8-) ) (in all tests above the drive specified was SCSI ID 0 in the same system and was the only drive. One drive was pax'ed from the other so they contained the identical data. Though not necessarily distributed around the drive the same. Also, the ST43400N is a 2GB drive while the ST15150W is a 4GB drive.) -- Brian Litzinger To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message