OpenLDAP, bdb and Linux filesystems

[Stephan Siano <stephan.siano@suse.de>]

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Hi,

has anyone here done performance measurements with OpenLDAP and the
bdb-backend on differen Linux filesystems (the filesystem where the the
database is stored)?

The background of the question is that we encountered performance
problems with subversion (which also stores the data in a berkeley-db)
when the database was stored on an ext3-FS. On closer examination we
found out, that for a simple testcase (Import of a 40MB repository) ext3
was about four times slower than ext2 (and reiserfs wasn't too much
better than ext3, while xfs wasn't too much slower than ext2). It seems
to me, that berkeley-db and ext3 (and reiser) filesystems don't play
together too well.

Has anybody observed a similar behaviour for OpenLDAP? Is only the
slapadd command affected or can a siginificant slowdown also be observed
in normal directory operation?

Yours,
Stephan Siano

- --
- ----------------------------------------------------------------------
Dr. Stephan Siano, Consultant
SUSE LINUX AG, Mergenthalerallee 45-47, D-65760 Eschborn
T: +49 (0) 6196 5095131
F: +49 (0) 6196 409607    - stephan.siano@suse.com
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