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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-13087) LLAP: Print STW pause time and useful application time
Date Thu, 18 Feb 2016 19:05:18 GMT
Prasanth Jayachandran created HIVE-13087:
--------------------------------------------

             Summary: LLAP: Print STW pause time and useful application time
                 Key: HIVE-13087
                 URL: https://issues.apache.org/jira/browse/HIVE-13087
             Project: Hive
          Issue Type: Bug
    Affects Versions: 2.1.0
            Reporter: Prasanth Jayachandran


The daemons currently prints GC details. It will be useful to print the total useful time
application spent and the total time for which application threads are stopped.

Need to add
{code}
-XX:+PrintGCApplicationStoppedTime -XX:+PrintGCApplicationConcurrentTime
{code}

to get something like
{code}
Application time: 0.3440086 seconds
Total time for which application threads were stopped: 0.0620105 seconds
Application time: 0.2100691 seconds
Total time for which application threads were stopped: 0.0890223 seconds
{code}

Reference: https://plumbr.eu/blog/performance-blog/logging-stop-the-world-pauses-in-jvm



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