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From "Pavel Voronkin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-10681) PME benchmarks become unstable at high number of partitions per cache.
Date Fri, 14 Dec 2018 06:25:00 GMT
Pavel Voronkin created IGNITE-10681:
---------------------------------------

             Summary: PME benchmarks become unstable at high number of partitions per cache.
                 Key: IGNITE-10681
                 URL: https://issues.apache.org/jira/browse/IGNITE-10681
             Project: Ignite
          Issue Type: Improvement
            Reporter: Pavel Voronkin


With increased number of partitions per cache (20-32k), some of the stages happening during
PME become very unstable both per node and per run. This must be investigated because it blocks
us from fine-tuning PME time optimizations further.

Example: same configuration, same servers, same version (8.5.1-p150)

a run 2018-11-13:
{noformat}
Exchange [13,0] during LEAVE 1 server(s): 8942 msec, 8952 msec
New topology version after JOIN 1 server(s): 14
Exchange [14,0] during JOIN 1 server(s): 7558 msec, 8225 msec
Exchange [14,1] during JOIN 1 server(s): 19510 msec, 19562 msec
{noformat}

a run 2018-11-14:
{noformat}
Exchange [13, 0] during LEAVE 1 server(s): 14434 msec, 14448 msec
New topology version after JOIN 1 server(s): 14
Exchange [14, 1] during JOIN 1 server(s): 9089 msec, 9512 msec
Exchange [14, 0] during JOIN 1 server(s): 14455 msec, 14671 msec
{noformat}



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