Dude, Eventually figured out why no matter how I did it, the benchmark for JBC 1.4.x did not work: org.cachebench.cachewrappers.JBossCacheWrapper inside jbosscache-1.4.1 shows: public Object getReplicatedData(List<String> l, String key) { return null; } So, replication works but checking whether the data has been replicated has not been implemented!! I'll get it fixed. Where do we fill JIRAs for the cache benchmark framework? Cheers, -- Galder Zamarreño Sr. Software Maintenance Engineer JBoss, a division of Red Hat