[jira] Commented: (HARMONY-5829) [drlvm][kernel][performance] j.l.Class Serializable/Externalizable caching

["Sergey Dmitriev (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HARMONY-5829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12601580#action_12601580 ] 

Sergey Dmitriev commented on HARMONY-5829:
------------------------------------------

Yes, Nathan, now 1-JUN Harmony shows no less score than 25-MAY revision on SPECjvm2008.serial.




> [drlvm][kernel][performance] j.l.Class Serializable/Externalizable caching
> --------------------------------------------------------------------------
>
>                 Key: HARMONY-5829
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5829
>             Project: Harmony
>          Issue Type: Sub-task
>          Components: DRLVM
>            Reporter: Aleksey Shipilev
>            Assignee: Nathan Beyer
>             Fix For: 5.0M7
>
>         Attachments: vm-kernel-serializable-externalizable-cache-rc1.patch, vm-kernel-serializable-externalizable-cache-rc2.patch, vm-kernel-serializable-externalizable-cache-rc3.patch, vm-kernel-serializable-externalizable-cache-V2-rc1.patch
>
>
> Serialization workloads relies on Class.isAssignableFrom(...) when looking up Serializable and Externalizable properties (that is, implementation of interfaces). For now, DRLVM kernel classes perform lookups on each invocation. This issue caches the mentioned properties in Class fields and does not go to native VMClassRegistry for resolution.

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