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From "James Gan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-6344) Provide a lock-free version of ReferenceQueue
Date Wed, 04 Nov 2009 03:08:32 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-6344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773364#action_12773364
] 

James Gan commented on HARMONY-6344:
------------------------------------

I attached two performance charts generated on a  16-core machine:

executed with DRLVM:
    ReferenceQueueHarmony_ReferenceQueueNoNodeWrapper_ReferenceQueueNodeWrapper_read75Write25.png

executed with IBM J9:
    ReferenceQueueHarmony_ReferenceQueueNoNodeWrapper_ReferenceQueueNodeWrapper_read95Write5.png

> Provide a lock-free version of ReferenceQueue
> ---------------------------------------------
>
>                 Key: HARMONY-6344
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6344
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>         Environment: Any modern multi-core environment
>            Reporter: James Gan
>            Assignee: Tim Ellison
>         Attachments: amino_rfq.zip, ReferenceQueueHarmony_ReferenceQueueNoNodeWrapper_ReferenceQueueNodeWrapper_read75Write25.png,
ReferenceQueueHarmony_ReferenceQueueNoNodeWrapper_ReferenceQueueNodeWrapper_read95Write5.png
>
>
> In Harmony, the original ReferenceQueue is a lock-base queue, which doesn't scale well
on multi-core environment. Here I attached an lock-free version of ReferenceQueue based on
Amino Library, which has better scalability than original queue

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