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A few thoughts occurred to me today about our indexing code:
1) we compute a hash preset for each invocation, crunching the syntax and
matching rule's OID, among other things. (It used to be worse, we used to
recompute this for each individual value, even though it's a constant.)
There's no need to always recompute this on each invocation, we can compute it
once at first usage and reuse that result. It should speed up index
generation, particularly on smaller attribute values. I'm preparing a patch to
test this now.
2) using this precomputed hash, we can drop the syntax, mr, and prefix
arguments from the indexer function signature. That will also speed things up.
3) I note that the 'use' argument is also never used in our indexer
functions. Will drop this as well.
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/