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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15431) A bunch of methods are hot and too big to be inlined
Date Wed, 09 Mar 2016 02:19:40 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lars Hofhansl updated HBASE-15431:
----------------------------------
    Description: 
I ran HBase with "-XX:+PrintCompilation -XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining"
and then looked for "hot method too big" log lines.

I'll attach a log of those messages.
I tried to increase -XX:FreqInlineSize to 1010 to inline all these methods (as long as they're
hot, but actually didn't see any improvement).

In all cases I primed the JVM to make sure the JVM gets a chance to profile the methods and
decide whether they're hot or not.

  was:
I ran HBase with "-XX:+PrintCompilation -XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining"
and then looked for "hot method too big" log lines.

I'll attach a log of those messages.
I tried to increase -XX:FreqInlineSize to 1010 to inline all these methods (as long as they're
hot, but actually didn't see any improvement).



> A bunch of methods are hot and too big to be inlined
> ----------------------------------------------------
>
>                 Key: HBASE-15431
>                 URL: https://issues.apache.org/jira/browse/HBASE-15431
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>         Attachments: hotMethods.txt
>
>
> I ran HBase with "-XX:+PrintCompilation -XX:+UnlockDiagnosticVMOptions -XX:+PrintInlining"
and then looked for "hot method too big" log lines.
> I'll attach a log of those messages.
> I tried to increase -XX:FreqInlineSize to 1010 to inline all these methods (as long as
they're hot, but actually didn't see any improvement).
> In all cases I primed the JVM to make sure the JVM gets a chance to profile the methods
and decide whether they're hot or not.



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