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From "Rustem Rafikov (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HARMONY-3227) [jvmti] significant performance degradation when turning-on jvmti on linux em64t
Date Thu, 22 Feb 2007 10:51:06 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-3227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rustem Rafikov updated HARMONY-3227:
------------------------------------

    Attachment: jvmti-monitor-capa-check.em64t.diff

> [jvmti] significant performance degradation when turning-on jvmti on linux em64t
> --------------------------------------------------------------------------------
>
>                 Key: HARMONY-3227
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3227
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>         Environment: linux-em64t
>            Reporter: Rustem Rafikov
>         Attachments: jvmti-monitor-capa-check.em64t.diff
>
>
> Hi All, 
> I noticed sugnificant performance degradation when turning-on jvtmi on lnx64. The problem
is that monitor helpers always use slow path when jvmti is enabled without checking whether
the corresponding capability is added. 
> The attached pach adds this check jit_lock_rt_support_em64t.cpp.
> --bwR

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