Date: Sat, 14 Apr 2001 19:37:10 -0700 From: Doug Barton <DougB@DougBarton.net> To: Matt Dillon <dillon@earth.backplane.com> Cc: "'current@freebsd.org'" <current@FreeBSD.ORG> Subject: Re: FW: Filesystem gets a huge performance boost Message-ID: <3AD90956.998BE3E7@DougBarton.net> References: <200104101103.f3AB36P49523@hak.lan.Awfulhak.org> <200104101824.f3AIOZ389340@earth.backplane.com>
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Matt Dillon wrote:
> If directories are spread all over the disk, caching
> is non-optimal. But if they are relatively close to each other then
> both our VM cache (if vfs.vmiodirenable is set to 1) and the hard
> drive's internal cache become extremely effective.
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?
Thanks,
Doug
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