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Posted to issues@impala.apache.org by "Tim Armstrong (JIRA)" <ji...@apache.org> on 2017/10/27 21:31:00 UTC

[jira] [Created] (IMPALA-6120) Report actual CPU time for codegen

Tim Armstrong created IMPALA-6120:
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             Summary: Report actual CPU time for codegen
                 Key: IMPALA-6120
                 URL: https://issues.apache.org/jira/browse/IMPALA-6120
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
    Affects Versions: Impala 2.11.0
            Reporter: Tim Armstrong


The codegen time measurements in profiles are often confusing because they're wall-clock time and can be inflated if a host is heavily loaded. We could use ThreadCounterMeasurement to get accurate user/sys CPU time.

[~bikramjeet.vig] interested what you think of this since it was motivated by a discussion we had.



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