From owner-freebsd-questions Fri Dec 15 17:25:53 1995 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id RAA03764 for questions-outgoing; Fri, 15 Dec 1995 17:25:53 -0800 (PST) Received: from who.cdrom.com (who.cdrom.com [192.216.222.3]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id RAA03757 for ; Fri, 15 Dec 1995 17:25:51 -0800 (PST) Received: from hub.org (hub.org [199.166.238.138]) by who.cdrom.com (8.6.12/8.6.11) with ESMTP id RAA03593 for ; Fri, 15 Dec 1995 17:24:56 -0800 Received: (from scrappy@localhost) by hub.org (8.7.3/8.7.3) id UAA04763; Fri, 15 Dec 1995 20:23:04 -0500 (EST) Date: Fri, 15 Dec 1995 20:22:57 -0500 (EST) From: "Marc G. Fournier" To: questions@freebsd.org Subject: IOZone Benchmarking... Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-questions@freebsd.org Precedence: bulk Hi... I'm just curious as to what I should be expecting in the way of values from iozone. My system is now a 486DX4-100 w/ 16Meg of RAM, just upgraded from a 386DX40 w/ 8Meg of RAM...and I swear its slower, and iozone just confirmed it for me. I'm running *-current, and under the 386, 'iozone 10' was showing readings like: 723935bytes/sec write, 873244bytes/sec read (IDE Maxtor 7345AT) Under the 486, using the onboard IDE in 32bit mode, I'm seeing IOZONE performance measurements: 313153 bytes/second for writing the file 383041 bytes/second for reading the file A substantial drop. My SCSI drives *were* showing something like: 846265bytes/sec, 1203746bytes/sec Now: IOZONE performance measurements: 514638 bytes/second for writing the file 590487 bytes/second for reading the file Again, a serious drop. Of key issue to what I'm noticing would be running software, like pine, that is slow to start, which I assume is due to the shared libraries. With performance on the IDE drive's ability to read dropped by at least a third...the slowdown kinda makes sense... I think this probably accounts for my poor system performance altho the upgrade from 386DX40 to 486DX4-100 *should* have made what I would consider a substantial improvement...especially with double the RAM. Both systems, for SCSI, are using an Adaptec 1542CF controller, so my SCSI controller hasn't changed. The motherboard is an ACER AP43 motherboard, with 4ISA-AT slots and 3PCI. I'm using one of the PCI for an ATI Mach64 video card, and one ISA slot for the Adaptec controller. I'm using onboard IDE/floppy and serial, and as such, have no other cards installed in this machine. Any recommendations/similar experiences are much appreciated... Marc G. Fournier | POP Mail Telnet Acct DNS Hosting scrappy@hub.org | WWW Services Database Services | Knowledge, soon to be: | | Information and scrappy@ki.net | WWW: http://hub.org | Communications, Inc