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Re: Recommended version of BDB package
On 07/02/14 21:01, Howard Chu wrote:
I've tested all the way up to 6.0.20. Didn't notice anything good or bad
about any of them, and all are slower than LMDB.
OK thanks for confirming this but the post on the Debian bug reporter
list (http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=688797) does state:
"
What version of BDB are you linked to? There are consistent reports of
deadlock issues with BDB 5.3. I would recommend against using that version
of BDB. 4.7.25+patches has been solid for me. All indications with the
BDB deadlock issue in 5.3 is that it is a BDB bug, and thus nothing to do
with OpenLDAP. It may exist in other 5.x versions of BDB.
"
I'm not making this up, honest ;-)
Your ITS#7657 has gotten no attention, due to lack of interest. Aliases
are a rather stupid part of LDAP; most other directory vendors don't
even bother to implement them.
If I'm honest I don't know why the people who are using them are using
them however my hands are tied regarding implementing a change that
will cause a significant performance hit for them as it stands. For what
it's worth I'd love to move to LMDB both for the performance benefits
and the fact that it's a lot lower maintenance than HDB is!
You might be able to revive interest in that ITS by providing a complete
test case (config+data) that demonstrates the issue.
That should be do-able although as far as I can remember in the ITS I
had demonstrated that (at least on my setup) it was reproduceable and I
thought I'd given enough information for it to be reproduced on a clean
test rig with a sufficiently large pool of accounts in the one OU. I'm
also unsure of the etiquette involved in resurrecting a dormant bug.
I'm happy to give you whatever information you need though and a
sanitised dump of my config in both HDB and MDB modes is probably a good
place to start.
--
/****************************
Mark Cairney
ITI UNIX Section
Information Services
University of Edinburgh
Tel: 0131 650 6565
Email: Mark.Cairney@ed.ac.uk
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