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

[Manik Surtani (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manik Surtani updated ISPN-663:
-------------------------------

    Fix Version/s: 5.0.0.CR3
                       (was: 5.0.0.CR2)


> Eviction with passivation using JdbmCacheStore is 100 times slower in 4.1 vs 4.0
> --------------------------------------------------------------------------------
>
>                 Key: ISPN-663
>                 URL: https://issues.jboss.org/browse/ISPN-663
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Eviction, Loaders and Stores
>    Affects Versions: 4.1.0.Final, 4.2.0.Final
>         Environment: Win32 JRE 1.6.0_21
>            Reporter: Paul Nardone
>            Assignee: Manik Surtani
>             Fix For: 5.0.0.CR3
>
>         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

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