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From "Pavel Afremov (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-3906) [drlvm][gc]Significant performance degradation after switch on GC v5
Date Fri, 18 May 2007 08:52:16 GMT
[drlvm][gc]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

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%

 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

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