From owner-freebsd-questions Thu Jan 31 10:59:42 2002 Delivered-To: freebsd-questions@freebsd.org Received: from post.mail.nl.demon.net (post-11.mail.nl.demon.net [194.159.73.21]) by hub.freebsd.org (Postfix) with ESMTP id B8C1537B416 for ; Thu, 31 Jan 2002 10:59:35 -0800 (PST) Received: from [212.238.194.207] (helo=tanya.raggedclown.net) by post.mail.nl.demon.net with esmtp (Exim 3.33 #1) id 16WMQl-0001VJ-00 for questions@freebsd.org; Thu, 31 Jan 2002 18:59:31 +0000 Received: by tanya.raggedclown.net (tanya.raggedclown.intra, from userid 500) id 22C6344F6F; Thu, 31 Jan 2002 19:59:30 +0100 (CET) Date: Thu, 31 Jan 2002 19:59:30 +0100 From: Cliff Sarginson To: questions@freebsd.org Subject: Re: noatime switch on local mount - anything really need the atime field ? Message-ID: <20020131185930.GA2520@raggedclown.net> References: <5.1.0.14.0.20020131112513.00aa6c20@postoffice.swbell.net> <20020131191902.P68986@roman.mobil.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020131191902.P68986@roman.mobil.cz> User-Agent: Mutt/1.3.24i Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, Jan 31, 2002 at 07:19:02PM +0100, Roman Neuhauser wrote: > > Date: Thu, 31 Jan 2002 11:36:48 -0600 > > To: questions@freebsd.org > > From: Sean O'Neill > > Subject: noatime switch on local mount - anything really need the atime > > field ? > > > > Does anything really use the atime field of inodes? > > > > Reading that atime update really isn't that big of a hit for casual systems > > (expect for make world stuff) like mine but hey, never hurts to get a > > little more performance out of my box :) > > MUAs use atime of mbox-type mailboxes to be able to tell whether new > mail has arrived. (Properly working MDA doesn't update atime when > storing a message in an mbox-type mailbox. MUA then sees mtime > > atime, and marks the mailbox as having new mail.) > Well you can use it in "find" for whatever reason as well. I should think any performance gain a small system might gain for it would be infinitesimally small, and as noted above, it will break new mail notification. -- Regards Cliff To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message