Hi, since Infinispan moved to JGroups 3.4, we're experiencing occassional deadlocks in some tests - most of threads that send anything over JGroups are waiting in JGroups' FlowControl.decrementCredits. The problem sometimes goes away after several seconds, but it produces some ugly spikes in our througput/response time charts. Originally this affected just some RadarGun tests but this is appearing in some client-server tests as well (we've recently investigated an issue where this appeared in a regular soak test). I was looking into that [1] for some time but haven't really figured out the cause. The workaround is to set up MFC and UFC credits high enough (I use 10M) and stuff works then. I was trying to reproduce that on pure JGroups, but unsuccessfully. I am not asking anyone to dig into that, but I wanted to know whether QA is alone experiencing that or if there are more of us.
Radim [1] https://issues.jboss.org/browse/JGRP-1675 -- Radim Vansa <rva...@redhat.com> JBoss DataGrid QA _______________________________________________ infinispan-dev mailing list infinispan-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev
