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https://issues.apache.org/jira/browse/JAMES-3477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17250043#comment-17250043
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ASF GitHub Bot commented on JAMES-3477:
---------------------------------------
chibenwa commented on pull request #280:
URL: https://github.com/apache/james-project/pull/280#issuecomment-745701937
BTW here is a run for 10MB
```
Scenario: Startup + 3 messages for 5 rcpts, 10MB each + Shutdown
Code version: Locking version of COW
Benchmark
Mode Cnt Score Error Units
MimeMessageBenchTest.benchmark1
avgt 3 49901.215 ± 92917.167 ms/op
MimeMessageBenchTest.benchmark1:·gc.alloc.rate
avgt 3 85.808 ± 156.009 MB/sec
MimeMessageBenchTest.benchmark1:·gc.churn.G1_Eden_Space
avgt 3 511.349 ± 977.955 MB/sec
MimeMessageBenchTest.benchmark1:·gc.churn.G1_Old_Gen
avgt 3 76.985 ± 165.456 MB/sec
MimeMessageBenchTest.benchmark1:·gc.churn.G1_Survivor_Space
avgt 3 2.232 ± 13.451 MB/sec
MimeMessageBenchTest.benchmark1:·gc.count
avgt 3 549.000 counts
MimeMessageBenchTest.benchmark1:·gc.time
avgt 3 8716.000 ms
Scenario: Startup + 3 messages for 5 rcpts, 10MB each + Shutdown
Code version: Always COPY
Benchmark
Mode Cnt Score Error Units
MimeMessageBenchTest.benchmark1
avgt 3 55688.810 ± 163013.521 ms/op
MimeMessageBenchTest.benchmark1:·gc.alloc.rate
avgt 3 77.816 ± 207.068 MB/sec
MimeMessageBenchTest.benchmark1:·gc.churn.G1_Eden_Space
avgt 3 462.497 ± 1271.321 MB/sec
MimeMessageBenchTest.benchmark1:·gc.churn.G1_Old_Gen
avgt 3 70.097 ± 189.172 MB/sec
MimeMessageBenchTest.benchmark1:·gc.churn.G1_Survivor_Space
avgt 3 1.939 ± 13.101 MB/sec
MimeMessageBenchTest.benchmark1:·gc.count
avgt 3 558.000 counts
MimeMessageBenchTest.benchmark1:·gc.time
avgt 3 9021.000 ms
```
Maybe we should plan running similar bench on real implems, not just memory,
before taking decisions?
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> MimeMessageCopyOnWriteProxy is not thread safe
> ----------------------------------------------
>
> Key: JAMES-3477
> URL: https://issues.apache.org/jira/browse/JAMES-3477
> Project: James Server
> Issue Type: Wish
> Reporter: Benoit Tellier
> Priority: Major
>
> https://www.mail-archive.com/[email protected]/msg69221.html
> &
> https://github.com/jeantil/james-project/commit/c0354ea21c5b0a8f6d46e9919f7db0d97db9eb23
> proves there is a concurrency issue in MimeMessageCopyOnWriteProxy class that
> we need to investigate.
> It causes our test suite to be flacky.
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