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From "Aleksey Shipilev (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5703) [drlvm][performance] j.l.ThreadLocal performance optimization
Date Tue, 08 Apr 2008 20:05:24 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12586945#action_12586945
] 

Aleksey Shipilev commented on HARMONY-5703:
-------------------------------------------

Baseline measurements on 8-core Clovertown:

S = Sun 1.6.0_05
H = Harmony r643000
R = H / S

threads=1  H=5144  S=243778  R=47.4
threads=4  H=19850  S=992522  R=50.0
threads=8  H=39899  S=2082282  R=52.2
threads=12  H=47800  S=2400955  R=50.2
threads=16  H=55802  S=2967455  R=53.2

Good scalability in both cases, but RI is 50x faster.

> [drlvm][performance] j.l.ThreadLocal performance optimization
> -------------------------------------------------------------
>
>                 Key: HARMONY-5703
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5703
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib, DRLVM
>            Reporter: Aleksey Shipilev
>         Attachments: MTHarness.jar
>
>
> Umbrella issue for j.l.ThreadLocal optimization.
> Uses MTHarness/ThreadLocalBench for benchmarking.

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