From owner-freebsd-hackers Sun Feb 12 17:11:03 1995 Return-Path: hackers-owner Received: (from root@localhost) by freefall.cdrom.com (8.6.9/8.6.6) id RAA06462 for hackers-outgoing; Sun, 12 Feb 1995 17:11:03 -0800 Received: from wcarchive.cdrom.com (wcarchive.cdrom.com [192.216.191.11]) by freefall.cdrom.com (8.6.9/8.6.6) with ESMTP id RAA06456 for ; Sun, 12 Feb 1995 17:11:02 -0800 Received: from estienne.cs.berkeley.edu (estienne.CS.Berkeley.EDU [128.32.42.147]) by wcarchive.cdrom.com (8.6.8/8.6.6) with ESMTP id RAA05471 for ; Sun, 12 Feb 1995 17:10:55 -0800 Received: (from gibbs@localhost) by estienne.cs.berkeley.edu (8.6.9/8.6.9) id RAA06200; Sun, 12 Feb 1995 17:10:53 -0800 From: "Justin T. Gibbs" Message-Id: <199502130110.RAA06200@estienne.cs.berkeley.edu> Subject: Re: My iozone results To: hasty@netcom.com Date: Sun, 12 Feb 1995 17:10:53 -0800 (PST) Cc: FreeBSD-hackers@wcarchive.cdrom.com In-Reply-To: <199502111943.LAA08238@netcom14.netcom.com> from "hasty@netcom.com" at Feb 11, 95 11:43:13 am X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1399 Sender: hackers-owner@FreeBSD.org Precedence: bulk > > > > IOZONE: auto-test mode > > > > > > MB reclen bytes/sec written bytes/sec read > > > 1 512 2064888 3728270 > > > 1 1024 3355443 4473924 > > > 16 8192 5088823 5149840 > > > Completed series of tests > > > kind of strange that you get approx. same numbers regardless of the > > file size. As if you were always (or never) going to disk! How much > > RAM do you have ? > > > Luigi > Well, I have 16MB of main and I am running X if I run the test > without X I get better numbers. > > At any rate, a more relible figure of the raw disk performance > can be obtained by tranferring like 10MB to /dev/null using > dd. Using a 16kb block size I managed to get 5.2mb/sec out > of the disk on a 10mb transfer to /dev/null. If you do the math, that's theoretical max. > Amancio Do you have any more info on your instability problems? Is it stable with just one device? I might have introduced a bug recently having to do with number of devices. I'll put all of my devices on one channel later tonight and see if I can reproduce it. -- Justin T. Gibbs ============================================== TCS Instructional Group - Programmer/Analyst 1 Cory | Po | Danube | Volga | Parker | Torus ==============================================