Date: Mon, 17 Jan 2005 14:49:11 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Miguel Mendez <flynn@energyhq.es.eu.org> Cc: Kris Kennaway <kris@obsecurity.org> Subject: Re: Slow directory access with lots of files Message-ID: <20050117224911.GA31567@xor.obsecurity.org> In-Reply-To: <20050117213425.595e6856.flynn@energyhq.es.eu.org> References: <41EC0D80.8090403@totem.is-a-geek.com> <20050117191343.GA79136@xor.obsecurity.org> <20050117213425.595e6856.flynn@energyhq.es.eu.org>
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--mYCpIKhGyMATD0i+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jan 17, 2005 at 09:34:25PM +0100, Miguel Mendez wrote: > On Mon, 17 Jan 2005 11:13:43 -0800 > Kris Kennaway <kris@obsecurity.org> wrote: >=20 > Hi, >=20 > > Do you have UFS_DIRHASH in your kernel? If you don't, or if you added > > it after the disk was already populated, you'll see the benefits if > > you dump, wipe and restore the disk. >=20 > Could you elaborate on that? My impression has always been that dirhash > does all its magic in memory, without persistant data stored on disk. No. It's an optimized method for laying out the data on disk. I think you're confusing it with softupdates, but that still doesn't work entirely that way. Kris --mYCpIKhGyMATD0i+ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFB7EDnWry0BWjoQKURAtFYAKDjoU8mLDU716kzcVAYUR9BLRjUdwCgvuO4 Sx/49Fgd4mn/fCf2VfQLmOA= =tN3o -----END PGP SIGNATURE----- --mYCpIKhGyMATD0i+--
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