Date: Mon, 28 Apr 1997 23:20:52 -0400 From: "Gary Palmer" <gpalmer@freefall.FreeBSD.ORG> To: Michael Hancock <michaelh@cet.co.jp> Cc: David Greenman <dg@root.com>, Don Lewis <Don.Lewis@tsc.tdk.com>, fs@freebsd.org Subject: Re: the namei cache... Message-ID: <6949.862284052@orion.webspan.net> In-Reply-To: Your message of "Fri, 25 Apr 1997 12:08:45 %2B0900." <Pine.SV4.3.95.970425114918.16713A-100000@parkplace.cet.co.jp>
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Michael Hancock wrote in message ID <Pine.SV4.3.95.970425114918.16713A-100000@parkplace.cet.co.jp>: > However, addressing the performance needs of news servers or large > /var/mail directories might lead to a lot of complications. It's like you > need some kind of dynamic hash table creation capability for each > directory vnode. I don't think this is practical. I don't think any form of non-hashed search will work well with this: root@news:/var/spool/news/misc/jobs/offered> ls | wc -l 20040 or the /var/spool/news/control/cancel directory, which typically has hundreds of thousands of files in it (unless the admin is smart and sets the expire on control.cancel to 0, which will bring it down to a max of about 50,000) Gary -- Gary Palmer FreeBSD Core Team Member FreeBSD: Turning PC's into workstations. See http://www.FreeBSD.ORG/ for info
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