Date: Tue, 21 Dec 1999 12:02:47 -0800 From: Kent Stewart <kstewart@3-cities.com> To: Jonathon McKitrick <jcm@dogma.freebsd-uk.eu.org> Cc: Dale Hagglund <rdh@best.com>, freebsd-questions@freebsd.org Subject: Re: when is it safe to use the 0xa0ffa0ff disk flags? Message-ID: <385FDCE7.3857622B@3-cities.com> References: <Pine.BSF.4.21.9912211604160.43375-100000@dogma.freebsd-uk.eu.org>
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Jonathon McKitrick wrote: > > On 21 Dec 1999, Dale Hagglund wrote: > >them during boot up, and then rebuilding the kernel. I went from > >about 4.1 MB/s for both reads and writes to 12.3 MB/s for reads and > >9.8 MB/s for writes. > > Hod do you measure these figures? With iozone? Is there a simple method > to run this program that gives newbie-intelligible results? I tried > 'iozone -a' and it ran for hours... i just hit ctrl-c and gave up. When I used iozone, I used "iozone -s 160m" to create 160MB files. You can set the file size to what ever you want as long as it is more than your memory. What iozone does show you how it handles various size reads and writes to get to the specified file size. I think it also throws some random I/O in as well. Kent > > -jm > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Kent Stewart Richland, WA mailto:kstewart@3-cities.com http://www.3-cities.com/~kstewart/index.html FreeBSD News http://daily.daemonnews.org/ SETI(Search for Extraterrestrial Intelligence) @ HOME http://setiathome.ssl.berkeley.edu/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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