[infinispan-issues] [JBoss JIRA] Commented: (ISPN-663) Eviction with passivation using JdbmCacheStore is 100 times slower in 4.1 vs 4.0

Eviction with passivation using JdbmCacheStore is 100 times slower in 4.1 vs 4.0 -------------------------------------------------------------------------------- Key: ISPN-663 URL: https://jira.jboss.org/browse/ISPN-663 Project: Infinispan Issue Type: Bug Components: Eviction, Loaders and Stores Affects Versions: 4.1.0.Final Environment: Win32 JRE 1.6.0_21 Reporter: Paul Nardone Assignee: Trustin Lee Fix For: 4.2.0.BETA1, 4.2.0.Final Attachments: InfinispanPassivationTest.java Eviction with passivation enabled using the JdbmCacheStore appears to be significantly slower in 4.1.0.FINAL vs 4.0.0.FINAL. The degredation in performance is so signficant to make it impossible to use The performance issue seems to due as the JdbmCacheStore synching the filesystem via FileDescriptor.sync() or similar which occurs during every object passivation and each passivation occurs as a new object is added beyond the EvictionMaxEntries capacity. The attached test inserts 1000 values into two caches Both caches use a JdbmCacheStore and LRU PASSIVATIONLRU10 runs with cache with EvictionMaxEntries 10 PASSIVATIONLRU1000 runs with cache with EvictionMaxEntries 1000 4.1.0.FINAL PASSIVATIONLRU10 Time Taken : 51704 PASSIVATIONLRU1000 Time Taken : 4484 4.0.0.FINAL PASSIVATIONLRU10 Time Taken : 281 PASSIVATIONLRU1000 Time Taken : 141 4.2.0.ALPHA2 PASSIVATIONLRU10 Time Taken : 51047 PASSIVATIONLRU1000 Time Taken : 5156