Date: Wed, 14 Nov 2001 07:08:08 -0800 (PST) From: Ian Dowse <iedowse@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/ufs/ufs ufs_dirhash.c Message-ID: <200111141508.fAEF88X98138@freefall.freebsd.org>
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iedowse 2001/11/14 07:08:07 PST
Modified files:
sys/ufs/ufs ufs_dirhash.c
Log:
Oops, when trying the dirhash sequential-access optimisation,
compare the slot offset against the predicted offset, not a boolean
flag. This typo effectively disabled the sequential optimisation,
but was otherwise harmless.
Not surprisingly, fixing this improves performance in the sequential
access case. I am seeing a 7% speedup on one machine here; using
dirhash when sequentially looking up directory entries is now about
5% faster instead of 2% slower than the non-dirhash case.
Submitted by: KOIE Hidetaka <koie@suri.co.jp>
MFC after: 1 week
Revision Changes Path
1.7 +1 -1 src/sys/ufs/ufs/ufs_dirhash.c
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