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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15431) A bunch of methods are hot and too big to be inline
Date Wed, 09 Mar 2016 02:16:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15186342#comment-15186342
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Lars Hofhansl commented on HBASE-15431:
---------------------------------------

The load I ran was a Phoenix count\(*) query. Note that almost all interesting methods using
during scanning are _not_ inlined.
* SQM.match
* StoreScanner.next
* HRegion$RegionScannerImpl::nextInternal
* HFileReaderV2$ScannerV2::blockSeek
* FastDiffDeltaEncoder$1::decode
* etc

As said, increasing -XX:FreqInlineSize did not improve things. Presumably because now too
much stuff is being inlined.

> A bunch of methods are hot and too big to be inline
> ---------------------------------------------------
>
>                 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).



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