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Message-ID: <20081128111338.GF6138@shareable.org>
Date:	Fri, 28 Nov 2008 11:13:38 +0000
From:	Jamie Lokier <jamie@...reable.org>
To:	Andreas Dilger <adilger@....com>
Cc:	Matthew Garrett <mjg@...hat.com>,
	Christoph Hellwig <hch@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	mingo@...hat.com, val.henson@...il.com, matthew@....cx
Subject: Re: [PATCH v4] relatime: Make relatime smarter

Andreas Dilger wrote:
> The one problem with a 1-day default is that cron jobs like updatedb will
> revert to updating the atime on every single file every day.  It would be
> better to make it slightly more than 1 day (e.g. 25h) to avoid this and
> at least defer atime updates to every other day for files that are not
> otherwise accessed except by cron.

On my computers (laptops) updatedb doesn't run at exact 24h intervals
- that would only happen for computers powered up all the time.

-- Jamie
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