Marcel Offermans wrote: > On Jan 18, 2010, at 4:14 , Vlatko Davidovski wrote: > >> Has anyone evaluated the performance of iPojo Event admin handling? Is there >> any limited maximum number of events/data that can be sent per second. >> When sending significant amount of events, I experienced that they don't >> arrive at the subscriber method. On the other hand, everything seems to be >> working under low load. > > Ik know Carsten has recently been working on Event Admin performance in > general, so no doubt he has done a lot of performance testing. I never tried > iPOJOs Event Admin support but in general I know that if things slow down too > much, handlers can get blacklisted and won't be notified anymore. This > behaviour is configurable, and can even be turned off if you don't want it. > >> Any recommendations? Is it better to use synchronous or asynchronous >> delivery under such circumstances? > > Asynchronous should be faster. I think even the spec mentions that you should > prefer them over synchronous events. > Yes, the spec mentions this - if we're speaking of the standard felix event admin, there is FELIX-1913 to improve the performance where possible. We had a lot of trouble with the event admin under heavy load (several threads sending lots of events at the same time). The bug is about to fix this - once we have this, I currently see some other areas where we could improve the implementation.
Regards Carsten -- Carsten Ziegeler [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
