Date: Mon, 5 Oct 1998 18:06:04 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: gpalmer@FreeBSD.ORG (Gary Palmer) Cc: freebsd-fs@FreeBSD.ORG Subject: Re: filesystem safety and SCSI disk write caching Message-ID: <199810051806.LAA21513@usr01.primenet.com> In-Reply-To: <22657.907553262@gjp.erols.com> from "Gary Palmer" at Oct 4, 98 10:07:42 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 > > I think that is very dependant on the server type. PC NetWare fileservers > probably have very different access patterns to (say) a web server or a mail > server. Let alone a news server. That depends. News servers are "read mostly". HTTP servers are "read mostly". IMAP4 servers, if they are used as intended, are "read mostly". POP3 servers are not. SMTP servers are not. SMB servers and AppleTalk servers probably show exactly the access patterns Novell measuered for NCP servers, since the requests are client-driven, as are those to NFS servers. But yes, this list is probably the optimization weighting for a file server as opposed to an application server. I've always disliked the term "application server", which was coined by Novell when it decided to not compete against Microsoft on the destop. 8-(. 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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