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slapd lightweight dispatcher

I've done a lot of testing in the last several days on a binary with the lightweight dispatcher code enabled (2.3 base), and I just want to say I'm a very big fan of it. It allows slapd to scale under high load at a rate I've not previously seen. I've also played with the multi-conn flag as well, and haven't seen it particularly affect the rates when only it is enabled, but I haven't tried the lightweight dispatcher without it being enabled at the same time.

One thing I'll note about multi-conn is that it requires a variable in connection.c to be set to the number of cpu's on the system where slapd will be run. I think this should instead be changed to a parameter in slapd.conf (slapd-cpus ??) so one doesn't have to have fixed slapd's for given systems. That same parameter could be used for giving guidelines to slapadd/slapdindex as well, and the tool-threads parameter could be replaced by the new one.


Quanah Gibson-Mount
Product Engineer
Symas Corporation
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