JBoss EAP CPU from fetching EJB passivated-count metrics increases as the infinispan shortLifePassivationStore size increases

Solution Verified - Updated

Environment

  • JBoss Enterprise Application Platform (EAP)
    • 8.0
    • 8.1

Issue

  • With active metric collection from EAP, CPU load increases with any EJB passivated-count metric checks as the Infinispan shortLifePassivationStore size increases. Threads can be seen iterating across persistence store file reads:
org.infinispan.persistence.sifs.NonBlockingSoftIndexFileStore.lambda$publishEntries$31 ()	52.9 ms (0.3%)	52.9 ms (3.5%)
..
io.reactivex.rxjava3.core.Flowable.subscribe ()	52.1 ms (0.3%)	52.1 ms (3.5%)
...
org.infinispan.persistence.sifs.IndexNode$$Lambda.0x00007ff1b1fc6900.subscribe ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.IndexNode.lambda$publish$1 ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.IndexNode.recursiveNode ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.Index$$Lambda.0x00007ff1b1f9ab78.apply ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.Index.lambda$publish$13 ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.IndexNode$LeafNode.loadValue ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.EntryRecord.loadMetadataAndValue ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.EntryRecord.readValue ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.EntryRecord.read ()	52.1 ms (0.3%)	52.1 ms (3.5%)
org.infinispan.persistence.sifs.FileProvider$Handle.read ()	52.1 ms (0.3%)	52.1 ms (3.5%)
sun.nio.ch.FileChannelImpl.read ()	52.1 ms (0.3%)	52.1 ms (3.5%)

Resolution

  • Update to EAP 8.1 update 6+

Root Cause

SBR
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