[jira] Resolved: (HARMONY-5396) [drlvm][em] excess ValueProfiler locking causes degradation on JITted code with profiling

["Egor Pasko (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-5396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Egor Pasko resolved HARMONY-5396.
---------------------------------

    Resolution: Fixed

let's consider it fixed, the comitted fixes already showed some significant performance improvements, if someone wants more in this case, call another issue

> [drlvm][em] excess ValueProfiler locking causes degradation on JITted code with profiling
> -----------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5396
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5396
>             Project: Harmony
>          Issue Type: Improvement
>          Components: DRLVM
>            Reporter: Aleksey Shipilev
>            Assignee: Egor Pasko
>         Attachments: 0001-ValueProfileCollector-refactoring-to-separate-FirstN-and-Divided-methods.txt, 0002-value-profiling-options-locked-flagged_all-flagged_insert-unsafe.txt, 0002-ValueProfileCollector-implementing-locking-strategies.txt, 0003-value-profiling-options-locked-flagged_all-flagged_insert-unsafe.txt, 0004-value-profiling-reviving-locked-profile.txt, 0005-volatile-fix.txt, 0006-ATOMIC_INC-strategy-linux-only.txt, HARMONY-5396-syncTie.patch
>
>
> During investigation of serious slowdown in some microbenchmark, excess locking in ValueProfiler was identified. 
> Please see Harmony-dev thread for the details: http://markmail.org/message/tatsfbyb7eb3q3rr

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