From owner-freebsd-current Sat Apr 14 19:37:15 2001 Delivered-To: freebsd-current@freebsd.org Received: from dt051n37.san.rr.com (dt051n37.san.rr.com [204.210.32.55]) by hub.freebsd.org (Postfix) with ESMTP id BDE6F37B422 for ; Sat, 14 Apr 2001 19:37:12 -0700 (PDT) (envelope-from DougB@DougBarton.net) Received: from DougBarton.net (master [10.0.0.2]) by dt051n37.san.rr.com (8.9.3/8.9.3) with ESMTP id TAA34129; Sat, 14 Apr 2001 19:37:10 -0700 (PDT) (envelope-from DougB@DougBarton.net) Message-ID: <3AD90956.998BE3E7@DougBarton.net> Date: Sat, 14 Apr 2001 19:37:10 -0700 From: Doug Barton Organization: Triborough Bridge & Tunnel Authority X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.2.12 i386) X-Accept-Language: en MIME-Version: 1.0 To: Matt Dillon Cc: "'current@freebsd.org'" Subject: Re: FW: Filesystem gets a huge performance boost References: <200104101103.f3AB36P49523@hak.lan.Awfulhak.org> <200104101824.f3AIOZ389340@earth.backplane.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Matt Dillon wrote: > If directories are spread all over the disk, caching > is non-optimal. But if they are relatively close to each other then > both our VM cache (if vfs.vmiodirenable is set to 1) and the hard > drive's internal cache become extremely effective. I notice that this option is off by default. Can you give a general idea of when it should be enabled, when it should be disabled, and what bad things might result with it on? Thanks, Doug -- Perhaps the greatest damage the American system of education has done to its children is to teach them that their opinions are relevant simply because they are their opinions. Do YOU Yahoo!? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message