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https://issues.apache.org/jira/browse/IMPALA-15287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kurt Deschler reassigned IMPALA-15287:
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Assignee: Arnab Karmakar
> Add ability to collect performance counters directly in Impalad
> ---------------------------------------------------------------
>
> Key: IMPALA-15287
> URL: https://issues.apache.org/jira/browse/IMPALA-15287
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 5.0.0
> Reporter: Joe McDonnell
> Assignee: Arnab Karmakar
> Priority: Major
>
> Google benchmark has integrated ability to sample performance counters. This
> uses a dependency on libpfm to help accomplish this. See
> [https://abseil.io/fast/53]
> Adding an option like this to Impala itself could provide useful information.
> One option would be to have a background thread sampling the counters
> periodically (e.g. every 100ms or 250ms), then grab the overlapping daemon
> level counters and pull them into the runtime profile. For single-query at a
> time benchmarking, this provides useful information at the query level.
> The performance metrics that are probably most interesting to start with
> would be LLC misses or TLB misses.
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