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Date:      Sun, 15 Apr 2001 17:43:24 -0700
From:      Peter Wemm <peter@wemm.org>
To:        "Justin T. Gibbs" <gibbs@scsiguy.com>
Cc:        Doug Barton <DougB@DougBarton.net>, Matt Dillon <dillon@earth.backplane.com>, "'current@freebsd.org'" <current@FreeBSD.ORG>
Subject:   Re: FW: Filesystem gets a huge performance boost 
Message-ID:  <20010416004324.D6F7D3811@overcee.netplex.com.au>
In-Reply-To: <200104150505.f3F55ts00973@aslan.scsiguy.com> 

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"Justin T. Gibbs" wrote:
> >	I notice that this option is off by default. Can you give a general
> >idea of when it should be enabled, when it should be disabled, and what bad
> >things might result with it on? 
> 
> It consumes a full page per-directory even though the majority of
> directories in a stock system are a small fraction of that size.

It is my understanding that with the new directory layout strategies, this
will be improved somewhat.  ie: a single page is much more likely to cache
up to 8 directories.

Cheers,
-Peter
--
Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au
"All of this is for nothing if we don't go to the stars" - JMS/B5


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