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https://jira.jboss.org/browse/ISPN-663?page=com.atlassian.jira.plugin.sys...
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Galder Zamarreño commented on ISPN-663:
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Right, so the main difference between 4.0 passivation + 4.2 w/ AsyncStore seems to be the
fact that in the latter, load/put ops happen simultaneously which results in poorer
performance at the cache store level, as opposed to loading all first and then storing.
Not 100% sure of the two optimizations that you're talking about. The one that's
clear is whether loading can be made optional somehow, precisely if previous value is not
needed (there's a couple of topics on this:
http://lists.jboss.org/pipermail/infinispan-dev/2010-October/006436.html and
http://lists.jboss.org/pipermail/infinispan-dev/2010-October/006484.html)
Eviction with passivation using JdbmCacheStore is 100 times slower in
4.1 vs 4.0
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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
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