Subject: Re: namei caching of newly created files?
To: Simon Burge <simonb@wasabisystems.com>
From: Steve Rumble <rumble@ephemeral.org>
List: tech-kern
Date: 01/22/2005 19:12:01
--u3/rZRmxL6MmkK24
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Sun, Jan 23, 2005 at 11:03:00AM +1100, Simon Burge wrote:
> > However, with many more files (I quickly tried 100,000)
> > performance degrades considerably.
>=20
> Is this "performance is worse than without dirhash", or "performance is
> still better than without dirhash, but just not has good"?

I didn't compare with non-dirhash performance with the same test
setup, however, it appeared to be about the same as non-dirhash
with a smaller number of files. That is, with enough files
dirhash didn't seem to make a difference.

I'm probably going to commit what I have this evening so it can be
reviewed and tested by others.

Regards,
Steve

--u3/rZRmxL6MmkK24
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (NetBSD)

iQEVAwUBQfLr0cuCaQyb9VOkAQI+YAgAoARLDbfcuN8BtmUU08IZcQtIkGC8+tG5
4sDCRkj1YM9Pw24ki44n6KcTyK/VJOBvdD7xwqN827u+iPOkyj7DbpXZrREh2Bu9
aWuuYDsr6ru5Rs8KA0fgCYl4ropQgPxCBftdh/qFfdtvxk7q4+x7iO7bHDFbW1ch
FDE9q/bF8C/scuwETp1NGW3vMDqmgm+p9II4GXI2DjYWziWDrBA6KtOX8W7Z9XqW
iVA5W7a38rpGAqUjXIuOuDnrxo0wApNBTLDCDNL2HbtCrlgBCk2POyTByYzILSTP
GzW8L7R6MZaP+oQ7iPB5vM88R2xg22s6EZR+iw2qwZtXKO04wPfmDQ==
=yorF
-----END PGP SIGNATURE-----

--u3/rZRmxL6MmkK24--