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From "Li Wang (Jira)" <j...@apache.org>
Subject [jira] [Created] (ZOOKEEPER-4289) Reduce the performance impact of Prometheus metrics
Date Tue, 04 May 2021 01:14:00 GMT
Li Wang created ZOOKEEPER-4289:
----------------------------------

             Summary: Reduce the performance impact of Prometheus metrics
                 Key: ZOOKEEPER-4289
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4289
             Project: ZooKeeper
          Issue Type: Improvement
          Components: metric system
    Affects Versions: 3.6.2, 3.7.0, 3.6.3, 3.8.0, 3.7.1
            Reporter: Li Wang


I have done load comparison tests for Prometheus enabled vs disabled and found the performance
is reduced about 40%-60% for both read and write operations (i.e. getData, getChildren and
createNode). 

Looked more into this and found that Prometheus Summary is very expensive and there are more
than 20 Summary metrics added to the new CommitProcessor.

Need a solution to reduce the impact of Prometheus metrics.






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