Re: [imp] Horde/IMP performance problems

2010-09-13 Thread Michael Menge
Quoting Jochen Roderburg : Zitat von Michael Menge : 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 Se

Re: [imp] Horde/IMP performance problems

2010-09-13 Thread Jochen Roderburg
Zitat von Michael Menge : 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 k

Re: [imp] Horde/IMP performance problems

2010-09-13 Thread Jochen Roderburg
Hello Andreas, Thanks for many more hints about the possible problems. Only one remark at the moment about one of the points: And database traffic in general: During my unintended "public performance test" I had a situation where database connection were not all accepted by our MySQL serv

Re: [imp] Horde/IMP performance problems

2010-09-13 Thread Jochen Roderburg
Zitat von Jan Schneider : Zitat von Michael Menge : Does anybody have or know tools which can simulate the load of hundreds of IMP users in order to see the impact of changes? I'd like to have such tools too ;-) JMeter is perfectly suited for that. Jan. Thanks, sounds promising. I'll