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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2017/03/23 08:32:41 UTC

[jira] [Assigned] (OAK-5956) Improve cache statistics of the segment cache

     [ https://issues.apache.org/jira/browse/OAK-5956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Dürig reassigned OAK-5956:
----------------------------------

    Assignee: Michael Dürig

> Improve cache statistics of the segment cache
> ---------------------------------------------
>
>                 Key: OAK-5956
>                 URL: https://issues.apache.org/jira/browse/OAK-5956
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: segment-tar
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: monitoring
>             Fix For: 1.8, 1.7.1
>
>
> The statistics provided by the segment cache are off due to the fact it serves as 2nd level cache: as it doesn't see all the hits in the 1st level cache ({{SegmentId.getSegment()}}), it reports a hit/miss rate that is to low. 
> We should look into how we could expose better statistics wrt. caching of segments. Possible consolidated over 1st and 2nd level caches. 



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