Date: Sat, 17 Mar 2001 23:28:56 -0800 (PST) From: Matt Dillon <dillon@earth.backplane.com> To: Julian Elischer <julian@elischer.org> Cc: Peter Wemm <peter@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/nfs nfs_node.c Message-ID: <200103180728.f2I7SuZ98670@earth.backplane.com> References: <200103170543.f2H5h1e46601@freefall.freebsd.org> <3AB2FDC7.4E4D850C@elischer.org>
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I'd like to see this in -stable after the freeze is over!
-Matt
:Peter Wemm wrote:
:>
:> peter 2001/03/16 21:43:01 PST
:>
:> Modified files:
:> sys/nfs nfs_node.c
:> Log:
:> Dramatically improve the **lame** nfs_hash(). This is based on the
:> Fowler / Noll / Vo Hash (http://www.isthe.com/chongo/tech/comp/fnv/).
:>
:> This improves hash coverage a *massive* amount. We were seeing one
:> set of machines that were using 0.84% of their 131072 entry nfsnode
:> hash buckets with maximum chain lengths of up to ~500 entries. The
:> machine was spending nearly 100% of its time in 'system'.
:> A test with this has pushed the coverage from a few perCent up to 91%
:> utilization with a max chain length of 11.
:>
:> Submitted by: David Filo
:
:tell David that it's nice to see he's still keeping his hand in..
:
:>
:> Revision Changes Path
:> 1.43 +17 -9 src/sys/nfs/nfs_node.c
:
:--
: __--_|\ Julian Elischer
: / \ julian@elischer.org
: ( OZ ) World tour 2000-2001
:---> X_.---._/
: v
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