On Thursday 10 May 2001 12:19, Pekka Pietikainen wrote:
> Here's some very unscientific numbers I've measured (ancient 4G SCSI
> drive on a dual pII/450), XFS 1.0-pre2 and reiserfs is
> the version in that kernel. The first bit is from tiobench, the
> multiple files one is a simple 30-line program that creates tons of
> 1k files and then removes them.
>
> XFS
>
> Create 20000 files: 116.882449
> Unlink 20000 files: 47.449201
>
> reiserfs
>
> Create 20000 files: 17.862143
> Unlink 20000 files: 9.487520
>
> ext2
>
> Create 20000 files: 248.758925
> Unlink 20000 files: 2.287174
Whoops! The create test is exactly the case my index patch
accelerates, trying it is highly recommended:
http://nl.linux.org/~phillips/htree/dx.testme-2.4.3-3
To apply:
cd source/tree
zcat ext2-dir-patch-S4.gz | patch -p1
cat dx.pcache-2.4.4 | patch -p0
Or for the all-in-page-cache version (needs Al Viro's patch, see the
READ.ME at http://nl.linux.org/~phillips/htree/):
http://nl.linux.org/~phillips/htree/dx.pcache-2.4.4-4
The testme version is easier to apply but the pcache version is more
like what the final form will be (waiting for Al's patch to get into
Linus's tree so I can de-fork this).
--
Daniel
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