Re: [infinispan-dev] The reason(s) why we have so many threads are spawned in the testsuite

On 10/09/2009 05:49 PM, Vladimir Blagojevic wrote: > On 09-10-09 11:32 AM, Galder Zamarreno wrote: >> >> On 10/09/2009 04:19 AM, Vladimir Blagojevic wrote: >> >>> Galder, >>> >>> Under profiler none of these seem to be a big problem except >>> asyncTransport TPE. All of these threads that you saw in thread >>> dumps >>> are related to rehash requests spawned by LeaveTask. LeaveTask >>> tries to >>> submit request to TPE and is block waiting. All of these threads >>> are. I >>> am still trying to figure out what is going. >>> >> Block waiting where? >> > ExecutorService#submit(Callable)<---- profiler shows thread is > blocked here > RPCManagerImpl#invokeRemotelyInFuture

Hmmm, that block could be due to asyncTransport thread pool being too small although I can't see the exact line where this condition would stop. I didn't see such thing in previous thread dumps I've taken. I don't have time to look at it right now but a quick way to figure out whether this is causing the slowdown would be to modify GlobalConfiguration to look like this: public static GlobalConfiguration getClusteredDefault() { GlobalConfiguration gc = new GlobalConfiguration(); gc.setTransportClass(JGroupsTransport.class.getName()); gc.setTransportProperties((Properties) null); Properties p = new Properties(); p.setProperty("threadNamePrefix", "asyncTransportThread"); ->> p.setProperty("maxThreads", 10); gc.setAsyncTransportExecutorProperties(p); return gc; } That will increase the asyncTransport pool from 1 to 10 threads. > > > Sorry for some reason there is no copy-paste feature for a thread > stack > in the profiler! I took a snapshot 3/4 into test suite and there more > than 20 threads blocked in the same line code. > > > > _______________________________________________ > infinispan-dev mailing list > infinispan-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/infinispan-dev -- Galder Zamarreño Sr. Software Engineer Infinispan, JBoss Cache _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev