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From "Mikhail Fursov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5719) [drlvm][jit][opt][performance] j.u.IdentityHashMap: inliner misses opportunities
Date Sun, 13 Apr 2008 13:03:04 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12588390#action_12588390
] 

Mikhail Fursov commented on HARMONY-5719:
-----------------------------------------

This is simple: nobody thought about it before.

Would you like to provide a patch by yourself?

BTW I remember another similar JIRA (HARMONY-5584) with inlining heuristics problem: increasing
bonuses for all methods led to timeout in tests. 
We can fix that JIRA using the same way - just add the method you need to the bonus table.

> [drlvm][jit][opt][performance] j.u.IdentityHashMap: inliner misses opportunities
> --------------------------------------------------------------------------------
>
>                 Key: HARMONY-5719
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5719
>             Project: Harmony
>          Issue Type: Sub-task
>          Components: DRLVM
>            Reporter: Aleksey Shipilev
>            Assignee: Mikhail Fursov
>
> Inliner misses performance-sensitive opportunities for inlining in j.u.IdentityHashMap.
> On ThreadLocalBench:
> mode [1]: 36600 
> mode [2]: 53700 (+46%)
> [1] 
> -Xem:server:
> [2]
> -Xem:server
> -XX:jit.arg.optimizer.inline.min_benefit_threshold=0
> -XX:jit.arg.optimizer.inline.inline_small_method_max_size=1000
> -XX:jit.arg.optimizer.inline.inline_small_method_bonus=7000

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