pls help: performance tuning

"ST Wong (ITSC)" <[email protected]> Tue, 11 May 2010 01:08:24 +0800

Newsgroups	gmane.network.openldap.general
Message-ID	<20663E71FC2D1A4F93B14C99CA81D89004E45A6B@EXCH1-ITSC.itsc.cuhk.edu.hk>

Hi all,
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I'm using openldap 2.4.21 + BerkeleyDB 4.8.26 on a machine with 4 cores. =
 The system occassionally does accept connection and get error:
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May  9 03:03:31 holiday slapd[2382]: connection_input: conn=3D645254 =
deferring operation: too many executing

I currently set thread in slapd.conf to 32 (default x 2).  While I think =
shouldn't modify SLAP_MAX_WORKER_THREADS, I tried to increase no. of =
threads, at the cost of read performance.  Besides, after increasing =
thread to over 32, say 100, I got warning of "threads larger than twice =
the default".
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Would like to know the recommended way to tune the system in our case.  =
Would anyone pls help?
Sorry for the newbie question.
=20
Thanks a lot.
/ST Wong ([email protected])