Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!ll-xn!ames!oliveb!amdahl!howard From: howard@amdahl.amdahl.com (The Toolmaster) Newsgroups: comp.sys.mac Subject: Re: A/UX filesystem performance Message-ID: <10252@amdahl.amdahl.com> Date: Thu, 16-Jul-87 12:15:37 EDT Article-I.D.: amdahl.10252 Posted: Thu Jul 16 12:15:37 1987 Date-Received: Sat, 18-Jul-87 08:02:01 EDT References: <44025@beno.seismo.CSS.GOV> Reply-To: howard@amdahl.UUCP (The Toolmaster) Organization: Amdahl Corp, Sunnyvale CA Lines: 39 In article <44025@beno.seismo.CSS.GOV> mo@seismo.CSS.GOV (Mike O'Dell) writes: > >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. Shucks, folks, I wanted to post the transfer rate for my SysV machine but time just doesn't have the resolution to handle "cat /usr/dict/all >/dev/null" It just keeps coming back with zero. >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). Oh, I should say my machine is an Amdahl 5890 running two processors, with your standard channel attached 6380E disk drives. >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. And UTS uses 4K blocks, for an infinite improvement :-) > Yours for more amazing technology, > -Mike O'Dell But I still prefer the amazing technology on my desk, a MacSE. UTS makes a great backend though. >PS - "System V - Consider It Standard." PS - BSD4.x - Consider it Adhoc. -- "Plan for the future because that's where you Howard C. Simonson are going to spend the rest of your life." {hplabs,ihnp4,nsc}!amdahl!howard - Mark Twain - [ The disclaimer for this message may be found in my next article ]