>
>
>
> I have done some benchmarks 6 months ago with 5 injectors sending as
> manu search request as possible to the server. I won't say it's enough
> to guarantee that the server is stable enough...
>
Performance testing is an art, not a science :-)
> This is typical of a client hving closed the connection just after
> having sent a search request. It sounds weird, but it's a possibility :
>
> public final void handleMessage( IoSession session, T message )
> throws Exception
> {
> LdapSession ldapSession =
> ldapServer.getLdapSessionManager().getLdapSession( session );
>
> if ( ldapSession == null )
> {
> // in some cases the session is becoming null though the
> client is sending the UnbindRequest
> // before closing
> LOG.info( "ignoring the message {} received from null
> session", message );
> return;
> }
>
>
OK, so like if there was a timeout on the client end? I send the request,
but it takes too long so it closes the connection before the search is done
being processed?
>
>
> The BIND operation is different from a session. A LdapSession is
> associated with a physical connection, while the Bind operation is just
> a message sent by the user. For some reason, (the protocol mandate it),
> you have to accept concurrent operations for a single session, like for
> instance an Abandon request should be processed even if a search request
> is being processed.
>
> Thus we have more than one thread processing the incoming requests, and
> in some cases, processing a Unbind request might be unliky and being
> done on a already closed connection.
>
Is there a way to tell if requests are coming in on one connection or over
multiple connections?
> >
> > Are there any guide lines for how to configure apacheds? ie the number
> of
> > threads?
>
> You can increase the number of processing thread in the transport layer
> :
>
> http://directory.apache.org/apacheds/advanced-ug/2-server-config.html#transports
> (check the ads-transportNbThreads paramenter).
>
>
Great, do you have any guidance on how to set these options? ie is it
better to have n threads where n is the number of cores/processors? Whats
the relationship between ads-transportBackLog and memory/processing power?
> Now, if you can insolate some problem, we would be happy to check what's
> going on !
>
>
Sure. Right now I'm just trying to understand what the logs are telling
me. MyVD's performance use case is probably very different from "straight"
apacheds. These tests seem to take between 300ms and 1.5s for
authentication (this isn't 1-1 with a single LDAP operation. Its actually
several.) where as ApacheDS the data is all local so the timings are
different.
> One last thing : we will conduct some load tests very soon.
>
>
We'd be happy to donate compute cycles on ec2 and assist in the testing
process however we can!
Thanks
Marc
