Date: Wed, 11 Apr 2001 10:03:04 +0800 From: David Xu <bsddiy@21cn.com> To: Matt Dillon <dillon@earth.backplane.com> Cc: Brian Somers <brian@Awfulhak.org>, Jason DiCioccio <Jason.DiCioccio@Epylon.com>, "'current@freebsd.org'" <current@FreeBSD.ORG> Subject: Re[2]: FW: Filesystem gets a huge performance boost Message-ID: <424036143.20010411100304@21cn.com> In-Reply-To: <200104101824.f3AIOZ389340@earth.backplane.com> References: <200104101103.f3AB36P49523@hak.lan.Awfulhak.org> <200104101824.f3AIOZ389340@earth.backplane.com>
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Hello Matt,
Wednesday, April 11, 2001, 2:24:35 AM, you wrote:
:>> I'm not 100% convinced about the algorithm to avoid clusters filling
:>> up with directory-only entries (it looks like a worst-case would fill
:>> a cluster with 50% directories and 50% files leaving a bad layout when
:>> the directories are populated further), but then the non-dirpref
:>> scheme has some far worse worst-case scenarios ;-)
MD> :
MD> :Just to follow up on myself... it seems the dirpref stuff was
MD> :committed to FreeBSD this morning :-]
MD> :
MD> :--
MD> :Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org>
MD> Yup, Kirk committed it. I really like the changes -- in the old days
MD> disk caches were tiny and directories were not well cached on top of that.
MD> It made sense to try to keep directories close to their files.
Any plan to MFC? I am interesting to see it in 4.3-RELEASE.
--
David Xu
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