Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!mo From: mo@seismo.CSS.GOV (Mike O'Dell) Newsgroups: comp.sys.mac Subject: A/UX filesystem performance Message-ID: <44025@beno.seismo.CSS.GOV> Date: Wed, 15-Jul-87 22:34:10 EDT Article-I.D.: beno.44025 Posted: Wed Jul 15 22:34:10 1987 Date-Received: Sat, 18-Jul-87 02:03:52 EDT Organization: Center for Seismic Studies, Arlington, VA Lines: 22 Someone reported that A/UX on the Mac II only gets about 50 KBytes/second out of its disk and wondered why. He also suggested the cause in his list of possibles: The System V Filesystem Shucks, folks, I've got a SysV machine with 4 12.5 Megahertz 68000's with Eagle disk drives that only gets 50 KBytes/second through the filesystem. That's only 1/6th the speed I get out of a SUN 3/160 with two ST506 drives on an Emulex SCSI controller (measured at 250 to 300 KBytes per second). Anyway, take heart folks - V6 used a 512 byte transfer size and could get only about 25 KBytes/second. System V with its 1 KByte transfer size gets 50 K - that's a 100% improvement. Yours for more amazing technology, -Mike O'Dell PS - "System V - Consider It Standard."