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https://issues.apache.org/jira/browse/OAK-3850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Teodor Rosu updated OAK-3850:
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Attachment: test-performance-v0.patch
I created a quick and ugly test that should give a first analysis of
PersistenceCache with metrics ( see test-performance-v0.patch ).
Short description ( comments can be also found in patch ):
- populate a DocumentNodeStore ( backed by a MemoryDocumentStore ) with 1.000
random nodes
- implement an "amnesic cache" ( PassthroughCache ) that does not store anything
- PersistentCache will wrap this silly cache ( this means nodes will *only be
cached* at the PersistentCache level )
The actual test:
1. iterate once ( untimed ) the nodes to make sure the PersistentCache gets
populated
2. iterate N (100.000) times through all nodes ( all served from NodeCache ).
this operation is timed
On my laptop I got the following results for op.2 above ( I will need to double
check these are correct ):
* PersistentCache *with* stats + MetricsStatisticsProvider ( ~ 46 sec )
* PersistentCache *with* stats + StatististicsProvider.NOOP (~ 40-41 sec )
* PersistentCache *without* stats = current oak trunk ( ~ 40-41 sec )
Will investigate further.
> Collect and expose Persistent Cache stats
> -----------------------------------------
>
> Key: OAK-3850
> URL: https://issues.apache.org/jira/browse/OAK-3850
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, documentmk
> Reporter: Teodor Rosu
> Attachments: OAK-3850-v0.patch, test-performance-v0.patch
>
>
> Expose persistent cache statistics ( see: [Guava
> CacheStats|http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/cache/CacheStats.html]
> )
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