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From "YangBin (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-5964) a garbage collection for CMP
Date Tue, 02 Sep 2008 13:21:45 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-5964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

YangBin updated HARMONY-5964:
-----------------------------

    Description: 
I have designed a "STW" garbage collection for CMP. Its total pause time is 24.9% to 62.1%
shorter than that of the garbage collection in Harmony M2 on Intel dual-core platform.  Its
performance is improved 20% in average. The detail experimental result is in the attachment.
(My development environment is 5.0M2). 
In the attachment there are the souce code, compile configure file and test report.

The following are the two parameters In my garbage collection.
-XX:gc.corenum=core number        default value is 2       i.e    -XX:gc.corenum=2
-XX:gc.blocksize=block size             default value is 64     i.e    -XX:gc.blocksize=64

 I am very glad to get some comments from everyone. 
Thank you.

  was:
I have designed a "STW" garbage collection for CMP. Its performance and total pause time is
better than the garbage collection Harmony M2 on Intel dual-core platform. (My development
environment is 5.0M2). In the attachment there are the souce code, compile configure file
and test report.

-XX:gc.corenum=core number        default value is 2       i.e    -XX:gc.corenum=2
-XX:gc.blocksize=block size             default value is 64     i.e    -XX:gc.blocksize=64

 I am very glad to get some opinion for everyone. 
Thank you.


> a garbage collection for CMP
> ----------------------------
>
>                 Key: HARMONY-5964
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5964
>             Project: Harmony
>          Issue Type: Improvement
>          Components: VM
>    Affects Versions: 5.0M4
>         Environment: Linux 32 bits
>            Reporter: YangBin
>             Fix For: 5.0M4
>
>         Attachments: compile_config.tgz, gc_stw_cmp_2008-8-30.tgz, test_report.tgz
>
>
> I have designed a "STW" garbage collection for CMP. Its total pause time is 24.9% to
62.1% shorter than that of the garbage collection in Harmony M2 on Intel dual-core platform.
 Its performance is improved 20% in average. The detail experimental result is in the attachment.
(My development environment is 5.0M2). 
> In the attachment there are the souce code, compile configure file and test report.
> The following are the two parameters In my garbage collection.
> -XX:gc.corenum=core number        default value is 2       i.e    -XX:gc.corenum=2
> -XX:gc.blocksize=block size             default value is 64     i.e    -XX:gc.blocksize=64
>  I am very glad to get some comments from everyone. 
> Thank you.

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