From owner-cvs-all Sun Oct 14 7:33: 8 2001 Delivered-To: cvs-all@freebsd.org Received: from flood.ping.uio.no (flood.ping.uio.no [129.240.78.31]) by hub.freebsd.org (Postfix) with ESMTP id A19C737B409; Sun, 14 Oct 2001 07:33:01 -0700 (PDT) Received: by flood.ping.uio.no (Postfix, from userid 2602) id 2A4AB14C2E; Sun, 14 Oct 2001 16:33:00 +0200 (CEST) X-URL: http://www.ofug.org/~des/ X-Disclaimer: The views expressed in this message do not necessarily coincide with those of any organisation or company with which I am or have been affiliated. To: Mike Silbersack Cc: Matt Dillon , Peter Wemm , Alfred Perlstein , Mikhail Teterin , , Subject: Re: noatimedir? (Re: cvs commit: src/sys/vm vnode_pager.c) References: <20011014023425.K36700-100000@achilles.silby.com> From: Dag-Erling Smorgrav Date: 14 Oct 2001 16:32:59 +0200 In-Reply-To: <20011014023425.K36700-100000@achilles.silby.com> Message-ID: Lines: 15 User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/20.7 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Mike Silbersack writes: > An effective way to implement this might be to tune it based on the > sysctl, but enable it only on partitions mounted softupdates or async. In > either of those cases, you clearly can't count on *any* disk activity > occuring on a predictable basis, so losing perfect accuracy on atimes is > no big deal. I'd imagine that a setting of 60 seconds would provide > reasonable accuracy while reducing atime updates a *lot*. Only on directories. If you're like me and update your CVS repo every hour, and run 'cvs update' maybe a couple of times every day, a 60- second hysteresis isn't going to make any difference to file atimes. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message