[imp] Horde/IMP performance problems

[Jochen Roderburg]

Zitat von Michael Menge <michael.menge at zdv.uni-tuebingen.de>:

> We are running a HA/LB cluster of two servers (2x quadcore XEON E5420
> 2,5GHz, 16 GB ram each)
>
> ClusterIP is used to distribute the load between the servers.
> - eAccelerator to speed up php,
> - Memcache for caching,
> - tempfs and Memcache for Sessions.
> - PgPool is used to keep the two PostgreSQL databases in sync,
>   it will eat up most of the performance gained by the second server,
>   but removes the single point of failure.

So even after all this tuning a single machine was not enough for the load?
The idea came also already up here to use more machines with load balancing.
Is this easily possible with Horde?
ClusterIP is the additional software you need for this?
Does this work with SSL?

Best regards,
Jochen Roderburg