[Perl] MLDBM problem
oferk at oren.co.il
Sun Oct 27 23:30:27 PST 2002
> I use MLDBM module for cache in apache env and on heavy load
> get error:
> 'MLDBM error: Second level tie failed, "No locks available"'.
> Error "No locks available" actually printed by GDBM_File module.
> Is there any way to increase num of locks ( or other way to
> solve problem )?
Similiar questions seem to have come up in the mod_perl mailing list, so you
might want to try posting your question there:
Searching the archive of that mailing list might also be of some help:
This text from the MLDBM page (Warnings section) might have some bearing on
"Many DBM implementations have arbitrary limits on the size of records that
can be stored. For example, SDBM and many ODBM or NDBM implementations have
a default limit of 1024 bytes for the size of a record. MLDBM can easily
exceed these limits when storing large data structures, leading to
mysterious failures. Although SDBM_File is used by MLDBM by default, it is
not a good choice if you're storing large data structures. Berkeley DB and
GDBM both do not have these limits, so I recommend using either of those
(http://search.cpan.org/author/CHAMAS/MLDBM-Sync-0.30/Sync.pm) might be of
help. Some of the advice in "mod_perl tuning"
might also help you.
Hope this helps :-)
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