Fibers use ForkJoinPool by default ---------------------------------- Key: JGRP-2455 URL: https://issues.redhat.com/browse/JGRP-2455 Project: JGroups Issue Type: Enhancement Reporter: Bela Ban Assignee: Bela Ban Priority: Major Fibers are currently created with {{Thread.builder().virtual().task(t).name(name).build()}} This uses the ForkJoinPool. See if changing this to thread_pool help; this pool is configurable via XML. Run perftest to see if handling messages and scheduling threads on the same pool cause a perf degradation.