Date: Wed, 11 Jul 2001 02:18:18 -0400 (EDT) From: Mikhail Teterin <mi@aldan.algebra.com> To: iedowse@FreeBSD.org Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/conf NOTES src/sys/conf files options src/sys/ufs/ufs dirhash.h ufs_dirhash.c inode.h ufs_inode.c ufs_lookup.c Message-ID: <200107110618.f6B6IJD15918@aldan.algebra.com> In-Reply-To: <200107102121.f6ALLUw38626@freefall.freebsd.org>
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=Bring in dirhash, a simple hash-based lookup optimisation for large =directories. When enabled via "options UFS_DIRHASH", in-core hash =arrays are maintained for large directories. These allow all directory =operations to take place quickly instead of requiring long linear =searches. For now anyway, dirhash is not enabled by default. Cool! My ~/Mail has 2420 files in it and browsing is damn slow. BTW, this reminds me, once again, of the wonderful things like: http://www.cs.columbia.edu/~ezk/research/usenetfs/ http://www.cs.columbia.edu/~ezk/research/cryptfs/ and more at http://www.cs.columbia.edu/~ezk/research/ Some parts mention FreeBSD ports explicitly, albeit 3.0... Anyone cares to bring this in? -- |\__-----__/| _____/ ::::: :::\_____ '__--( ::::::::..::)--__` -mi If you have a / _- \/ :::::::\/ -_ serious knowledge / / :. .::::\ \ about computers -- | ::::::::::::| Ok, let's say you broke keep it in a secret! _|/ ::::____::\|_ the wall with your head "Rules of dating", / /:::::/:_::\::\:.\ What are you going to 'Playboy', ? 1994 | :| ..:(_/ \::|::|::| do in the next cell? | :|:::::. ::|: |::|.:| Stanislaw J. Lec \ |:: :::_/::/: :|:/ ((___\____\____/___/___)) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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