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RE: slapd.conf threads setting



--On Tuesday, January 27, 2004 4:37 PM -0500 "Hall, Ken (IDS ECCS)" <ken_hall@ml.com> wrote:

I'm running into a problem where the servers get overloaded and start
returning "can't contact ldap server (81)", or something like it.  I've
been debating increasing the thread # from the default 32. Do you think
this would help, or am I barking up the wrong tree?


On 2.1, we played with the thread settings extensively.  We
came up with a
standard of using 20 threads on our Solaris systems.  More
threads than
that decreased performance.  Our servers can handle about 55
queries/second.


Ken,

I suggest *very* careful and consistent testing when playing with the thread values. The performance gain you achieve by implementing threads only goes so far, after which point, as I noted, you get worse performance. I'm also currently investigating some behavior that I'm seeing on our servers, where under heavy load, the simply become unavailable for periods of time. We too are seeing the can't contact ldap server message.

--Quanah


--
Quanah Gibson-Mount
Principal Software Developer
ITSS/TSS/Computing Systems
ITSS/TSS/Infrastructure Operations
Stanford University
GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html