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https://issues.apache.org/jira/browse/GEODE-996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15170221#comment-15170221
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ASF subversion and git services commented on GEODE-996:
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Commit f15010cf6996e7d82c27ee9573e708182d061a80 in incubator-geode's branch
refs/heads/feature/GEODE-996 from [~sboorlagadda]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-geode.git;h=f15010c ]
GEODE-996: OffheapStats - fragmentation percentage calculation has to be
revisited.
> OffheapStats - fragmentation percentage calculation has to be revisited.
> ------------------------------------------------------------------------
>
> Key: GEODE-996
> URL: https://issues.apache.org/jira/browse/GEODE-996
> Project: Geode
> Issue Type: Bug
> Components: docs, offheap
> Reporter: Sai Boorlagadda
> Assignee: Sai Boorlagadda
>
> Fragmentation calculation is not correct before compaction or even after
> compaction if the largest fragment is >= MAX_SLAB_SIZE.
> Currently the fragmentation is calculated as below.
> {quote}
> FS - LF
> ----------- * 100
> FS
> FS: Free space found during compaction
> LF: Largest fragment found during compaction
> {quote}
> eg:
> For a free space of 100G and largest fragment = 2G (MAX_SLAB_SIZE)
> Fragmentation = (100G - 2G / 100G) * 100 ~ 98% (where as we want it to be
> close to 0 as the free space is not fragmented)
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