Date: 14 Oct 2001 16:32:59 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: Mike Silbersack <silby@silby.com> Cc: Matt Dillon <dillon@earth.backplane.com>, Peter Wemm <peter@wemm.org>, Alfred Perlstein <bright@mu.org>, Mikhail Teterin <mi@aldan.algebra.com>, <cvs-committers@FreeBSD.ORG>, <cvs-all@FreeBSD.ORG> Subject: Re: noatimedir? (Re: cvs commit: src/sys/vm vnode_pager.c) Message-ID: <xzp7ktycmw4.fsf@flood.ping.uio.no> In-Reply-To: <20011014023425.K36700-100000@achilles.silby.com> References: <20011014023425.K36700-100000@achilles.silby.com>
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Mike Silbersack <silby@silby.com> 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
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