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Posted to commits@harmony.apache.org by "Xiao-Feng Li (JIRA)" <ji...@apache.org> on 2007/05/21 15:52:16 UTC
[jira] Closed: (HARMONY-3906) [drlvm][gc_gen]Significant
performance degradation after switch on GC v5
[ https://issues.apache.org/jira/browse/HARMONY-3906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiao-Feng Li closed HARMONY-3906.
---------------------------------
Resolution: Fixed
> [drlvm][gc_gen]Significant performance degradation after switch on GC v5
> ------------------------------------------------------------------------
>
> Key: HARMONY-3906
> URL: https://issues.apache.org/jira/browse/HARMONY-3906
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Reporter: Pavel Afremov
> Assigned To: Xiao-Feng Li
> Attachments: ExceptionsWeakRefBenchmark.java
>
>
> I found out significant performance degradation of class unloading support after switch on GC v5. On 1 processor machine performance degradation in micro benchmark from HARMONY-3845 can reach 10 times, on 4 HT processors degradation reaches up 80 times. It is 1000% and 8000% correspondently!
> I developed additional benchmark, which shows this problem without any changes in VM. You can find it in attachment.
> Of cause it's a synthetic benchmark. I didn't find any performance issues on specJVM and specJBB.
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