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From "Xiao-Feng Li (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5759) [drlvm][gc][performance] Alignment of GC blocks could improve the performance of FP benchmarks
Date Fri, 18 Apr 2008 00:07:21 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12590249#action_12590249
] 

Xiao-Feng Li commented on HARMONY-5759:
---------------------------------------

Aleksey, the patch looks good.

Could you change "BLOCK_BASE_ALIGNMENT" to be
"GC_BLOCK_BODY_ALIGNMENT"?  BASE actually refers to the start of a
block. BODY is the start of the allocatable area.  (And same to
BLOCK_BASE_ALIGN_MASK). Thanks.

I will commit after you make the modification.

Thanks,
xiaofeng

On Fri, Apr 18, 2008 at 1:01 AM, Aleksey Shipilev (JIRA)



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> [drlvm][gc][performance] Alignment of GC blocks could improve the performance of FP benchmarks
> ----------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5759
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5759
>             Project: Harmony
>          Issue Type: Improvement
>            Reporter: Aleksey Shipilev
>         Attachments: vm-gc-blocksize-rc1.patch
>
>
> This issue defines the block alignment to be separated from object alignment. This would
allow to leave the object alignment at 4 and not to waste precious memory, but on other hand
will open the way for alignment of GC blocks to 8 thus increasing the chances that data requiring
8/16 alignment will layout in memory properly.

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