From owner-freebsd-current Mon Mar 20 08:49:02 1995 Return-Path: current-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id IAA00283 for current-outgoing; Mon, 20 Mar 1995 08:49:02 -0800 Received: from gndrsh.aac.dev.com (gndrsh.aac.dev.com [198.145.92.241]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id IAA00277 for ; Mon, 20 Mar 1995 08:48:59 -0800 Received: (from rgrimes@localhost) by gndrsh.aac.dev.com (8.6.8/8.6.6) id IAA27236; Mon, 20 Mar 1995 08:47:44 -0800 From: "Rodney W. Grimes" Message-Id: <199503201647.IAA27236@gndrsh.aac.dev.com> Subject: Re: iozone read vs. write To: kuku@gilberto.physik.rwth-aachen.de (Christoph P. Kukulies) Date: Mon, 20 Mar 1995 08:47:44 -0800 (PST) Cc: freebsd-current@freefall.cdrom.com In-Reply-To: <199503201602.RAA02319@gilberto.physik.rwth-aachen.de> from "Christoph P. Kukulies" at Mar 20, 95 05:02:31 pm X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 765 Sender: current-owner@FreeBSD.org Precedence: bulk > > iozone 13 ... > > Writing the 13 Megabyte file, 'iozone.tmp'...15.085938 seconds > Reading the file...4.000000 seconds > > IOZONE performance measurements: > 903589 bytes/second for writing the file > 3407872 bytes/second for reading the file > > Does anone have an explanation why the number diverge to such an extent? > (System is a 32 MB 486DX2/66 EIDE 2 Quantum 540 system) I suspect a set of bad newfs parameters on this drive, can you send me (in private email, no need for the whole list to read it) the disklabel and the first 50 lines of dumpfs for the file system you are seing this on. -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD