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Date:      Tue, 3 Nov 2015 14:09:08 +0000
From:      Matthew Seaman <matthew@FreeBSD.org>
To:        freebsd-ports@freebsd.org
Subject:   Re: ccache's cleanup algorithm
Message-ID:  <5638C004.8030404@FreeBSD.org>
In-Reply-To: <201511031326.tA3DQkGW004763@sdf.org>
References:  <201511031326.tA3DQkGW004763@sdf.org>

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On 03/11/2015 13:26, Scott Bennett wrote:
> If it's really using LRM instead of LRU,
> can anyone explain why?

It's fairly common to mount filesystems noatime -- it's the default for
ZFS setups created by the installer nowadays I believe, plus it is
common on other unix-like OSes.  Which means tracking atime is quit
likely to be useless for ccache.  Tracking mtime may simply be the next
best alternative.

	Cheers,

	Matthew



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