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https://issues.apache.org/jira/browse/OAK-4936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15572413#comment-15572413
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Michael Dürig commented on OAK-4936:
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Switching from LIRS to a Guava caches greatly improves the cache's hit rate:
https://github.com/mduerig/jackrabbit-oak/commit/cf24625c05ebd20acd3b34e702f9ef5b9af7ea5a
Will run a couple of benchmarks with and without the cache and share the
numbers once I have them.
> Too many segment cache misses
> -----------------------------
>
> Key: OAK-4936
> URL: https://issues.apache.org/jira/browse/OAK-4936
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: segment-tar
> Reporter: Michael Dürig
> Assignee: Michael Dürig
> Labels: performance
> Fix For: Segment Tar 0.0.16
>
> Attachments: OAK-4936-monitoring.patch
>
>
> Running the {{ConcurrentWriteTest}} benchmark and monitoring the hits and
> misses of the segment cache (LIRS), I noticed that some segments are loaded
> over and over again (up to 3000 times).
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