Date: Tue, 25 Jul 2000 12:48:52 -0700 From: Mike Smith <msmith@freebsd.org> To: The Hermit Hacker <scrappy@hub.org> Cc: freebsd-scsi@freebsd.org Subject: Re: 4.1RC read/write speeds ... Message-ID: <200007251948.MAA31740@mass.osd.bsdi.com> In-Reply-To: Your message of "Tue, 25 Jul 2000 16:10:43 -0300." <Pine.BSF.4.21.0007251600460.3502-100000@thelab.hub.org>
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> > Does this look right for a Dual-PIII, no load other then the operating > system, idle disk *only* being used for the tests ... just seems low to > me: > > > Writing the 232 Megabyte file, 'iozone.tmp'...14.273438 seconds > Reading the file...3.328125 seconds > > IOZONE performance measurements: > 17043521 bytes/second for writing the file > 73095100 bytes/second for reading the file The test is meaningless; you probably have a good portion of the 232MB file in the buffer cache. 17MB/sec is far too fast for one of these lame-duck WD SCSI disks, let alone 73MB/sec. -- ... every activity meets with opposition, everyone who acts has his rivals and unfortunately opponents also. But not because people want to be opponents, rather because the tasks and relationships force people to take different points of view. [Dr. Fritz Todt] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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