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https://issues.apache.org/jira/browse/GEODE-6424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacob S. Barrett updated GEODE-6424:
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Attachment: image.png
> Reduce overhead of stats storage
> --------------------------------
>
> Key: GEODE-6424
> URL: https://issues.apache.org/jira/browse/GEODE-6424
> Project: Geode
> Issue Type: Improvement
> Components: statistics
> Reporter: Jacob S. Barrett
> Priority: Major
> Attachments: image.png
>
>
> The current stats storage system is based on a very old and complicated
> implementation of a thread striped counter. See {{Atomic50StatisticsImpl}}.
> This implementation makes now incorrect assumptions about certain performance
> characteristics of volatile memory access. Combined with it's complexity it
> is causing large variances in performance numbers on the function benchmarks.
> Runs can differ by as much as 45%.
> Replace this implementation with one based on the Java 8 {{LongAdder}}, which
> is a modern and JDK maintained implementation of a striped counter. Also use
> {{DoubleAdder}} to support doubles, which the {{Atomic50StatisticsImpl}} does
> not support.
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