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https://issues.apache.org/jira/browse/KUDU-972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon reassigned KUDU-972:
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Assignee: Todd Lipcon
> cache should track memory overhead
> ----------------------------------
>
> Key: KUDU-972
> URL: https://issues.apache.org/jira/browse/KUDU-972
> Project: Kudu
> Issue Type: Bug
> Components: cfile, util
> Affects Versions: Private Beta
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Major
>
> Currently the cache only accounts for the cache _values_ in the memtracker.
> Each key seems to have 88 or so bytes of memory usage as well (potentially
> rounded up due to allocation overhead, etc).
> For the DRAM cache, this is still a ~700:1 ratio assuming 64kb block sizes,
> but for PMEM, where we expect hundreds of GBs of block cache, a 700:1 ratio
> may turn out to be somewhat substantial.
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