Implementation of RpcManagerImpl.invokeRemotely causes high CPU usage --------------------------------------------------------------------- Key: ISPN-5962 URL: https://issues.jboss.org/browse/ISPN-5962 Project: Infinispan Issue Type: Enhancement Components: Core Affects Versions: 8.1.0.Beta1 Reporter: Sanne Grinovero Assignee: Pedro Ruivo Fix For: 8.1.0.Final Attachments: CompletableFutureBenchmarks.java The method {{org.infinispan.remoting.rpc.RpcManagerImpl.invokeRemotely(Collection<Address>, ReplicableCommand, RpcOptions)}} is implemented by blocking on a {{CompletableFuture}}, but this then stalls on {{java.util.concurrent.CompletableFuture.waitingGet(boolean)}} by spending a significant amount of CPU time by spinning. When implementing RPC calls and having to wait for remote operations, spinning is probably not a good idea. Could we try implementing this in some way to hint towards a more pessimistic lock?