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From "Robert Stupp (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CASSANDRA-10379) Consider using -XX:+TrustFinalNonStaticFields
Date Tue, 19 Jan 2016 08:48:39 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-10379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Stupp resolved CASSANDRA-10379.
--------------------------------------
       Resolution: Won't Fix
    Fix Version/s:     (was: 3.x)

I agree.
Especially since there's a viable backport for 8u76 for Atomic*FieldUpdater, which should
give a probably slight performance increase or at least some reduction in CPU usage.

> Consider using -XX:+TrustFinalNonStaticFields
> ---------------------------------------------
>
>                 Key: CASSANDRA-10379
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10379
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Robert Stupp
>            Assignee: Robert Stupp
>         Attachments: 10379.txt
>
>
> The JVM option {{-XX:+TrustFinalNonStaticFields}}, although experimental, seems to improve
performance a bit without any code change. Therefore I propose to include it in {{cassandra-env.sh/psl}}.
> [cstar perf benchmark|http://cstar.datastax.com/graph?stats=a6e75018-5ff4-11e5-bf84-42010af0688f&metric=op_rate&operation=1_user&smoothing=1&show_aggregates=true&xmin=0&xmax=865.59&ymin=0&ymax=145568.5]
> The cstar test was run with 8u45.
> {noformat}
> JVM_OPTS="$JVM_OPTS -XX:+UnlockExperimentalVMOptions"
> JVM_OPTS="$JVM_OPTS -XX:+TrustFinalNonStaticFields"
> {noformat}



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