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Posted to notifications@logging.apache.org by GitBox <gi...@apache.org> on 2019/05/21 01:24:27 UTC

[GitHub] [logging-log4j2] carterkozak commented on issue #269: LOG4J2-2609: Implement Synchronous AsyncQueueFullPolicy

carterkozak commented on issue #269: LOG4J2-2609: Implement Synchronous AsyncQueueFullPolicy
URL: https://github.com/apache/logging-log4j2/pull/269#issuecomment-494204519
 
 
   I may not end up committing the synchronous policy because it's not terribly helpful outside of testing. If we (carefully) synchronize around the enqueue operation we can get more throughput, avoid poorly ordered events, and avoid creating thread-local buffers outside of the background thread:
   
   ```
   Benchmark                                                      (queueFullPolicy)   Mode  Cnt        Score        Error  Units
   ConcurrentAsyncLoggerToFileBenchmark.concurrentLoggingThreads            ENQUEUE  thrpt    3  1302070.388 ± 713643.057  ops/s
   ConcurrentAsyncLoggerToFileBenchmark.concurrentLoggingThreads        SYNCHRONOUS  thrpt    3  1151360.276 ±  99047.131  ops/s
   ConcurrentAsyncLoggerToFileBenchmark.singleLoggingThread                 ENQUEUE  thrpt    3  1330328.259 ± 749542.377  ops/s
   ConcurrentAsyncLoggerToFileBenchmark.singleLoggingThread             SYNCHRONOUS  thrpt    3  1381320.895 ± 507036.686  ops/s
   ```

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