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Re: FD_SETSIZE problems on a high-end server
Increasing the thread parameter past 16 may cause resource
exhaustion and will increase resource contention. Values from
8-16 are appropriate for most platforms for most deployment
scenarios. I've added a FAQ answer in this area:
Reducing the value may lead to better overall performance.
At 09:55 AM 10/21/2004, Raphaël Ouazana-Sustowski wrote:
>Selon Quanah Gibson-Mount <firstname.lastname@example.org>:
>> Quoting Raphaël Ouazana-Sustowski <email@example.com>:
>> > If your connections are all active, you may need to increase max
>> > up to about 120.
>> This is not correct. There is no direct connection between the
>> number of
>> threads available to the slapd process and the number of connections
>> available. In fact, increasing the number of threads can have very
>> negative impacts on the directory server. The threads paramater
>> should be
>> used with caution and a lot of testing to see how your server is
>In fact when I say active I mean not only established connections, but
>working connections, ie connections which load the directory server. In
>this case I think you need at least as much threads as maximum "active"