From owner-freebsd-current Sun Aug 25 18:44:16 1996 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id SAA07032 for current-outgoing; Sun, 25 Aug 1996 18:44:16 -0700 (PDT) Received: from mx.serv.net (mx.serv.net [199.201.191.10]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id SAA07025 for ; Sun, 25 Aug 1996 18:44:14 -0700 (PDT) Received: from MindBender.serv.net by mx.serv.net (8.7.5/SERV Revision: 2.30 † id SAA27499; Sun, 25 Aug 1996 18:44:13 -0700 (PDT) Received: from localhost.HeadCandy.com (michaelv@localhost.HeadCandy.com [127.0.0.1]) by MindBender.serv.net (8.7.5/8.7.3) with SMTP id SAA12137; Sun, 25 Aug 1996 18:43:54 -0700 (PDT) Message-Id: <199608260143.SAA12137@MindBender.serv.net> X-Authentication-Warning: MindBender.serv.net: Host michaelv@localhost.HeadCandy.com [127.0.0.1] didn't use HELO protocol To: Michael Hancock cc: Warner Losh , current@freebsd.org Subject: Re: Speedingup the "worldstone" In-reply-to: Your message of Mon, 26 Aug 96 09:49:09 +0900. Date: Sun, 25 Aug 1996 18:43:53 -0700 From: "Michael L. VanLoon" Sender: owner-current@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >I think you've already done things nicely by spreading out the disk i/o, >compiles are also CPU intensive so the x486 looks like your bottle neck. >I'm skepical that you can really get the disks singing in harmony to take >advantage of Ultra Wide. Though it's generally a good thing to have >advances in bus architectures so that it puts pressure on the peripherals >to catch up. I can tell you, for a fact, that you won't get Ultra Wide bandwidth out of a 486 on real filesystem data. The 486 design just doesn't have enough power. The best you'll probably do, on real-world use, is maxing out fast SCSI (10MB/s), and then only if you tune well. ----------------------------------------------------------------------------- Michael L. VanLoon michaelv@MindBender.serv.net --< Free your mind and your machine -- NetBSD free un*x >-- NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3, Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32... NetBSD ports in progress: PICA, others... -----------------------------------------------------------------------------