Date: Mon, 5 Oct 1998 17:31:05 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: eilts@tor.muc.de (Hinrich Eilts) Cc: freebsd-fs@FreeBSD.ORG Subject: Re: filesystem safety and SCSI disk write caching Message-ID: <199810051731.KAA19781@usr01.primenet.com> In-Reply-To: <199810041400.QAA02453@tor.muc.de> from "Hinrich Eilts" at Oct 4, 98 04:00:01 pm
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> > I can post (once again) the results of a Novell study on server usage > > patterns. The 30,000 foot view for a typical server breaks down to: > > > > 75% reads > > 15% writes > > 8% directory search operations > > 2% other > > How does this translate to disk usage? I think, VM/buffer cache will > reduce reads and directory search operations quite a lot. I'm only reporting what Novell has characterized as "typical server usage" over a much larger statistical smaple than has ever been used in the UNIX community. You're free to draw your own conclusions about what "typical server usage" means. My conclusion is that reads are 5 times more frequent than writes and 10 times more frequent than directory operations. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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