Re: [PR] [improve][broker] Optimize fine-grained concurrency control for BucketDelayedDeliveryTracker [pulsar]

["Denovo1998 (via GitHub)" <gi...@apache.org>]

Denovo1998 commented on PR #24739:
URL: https://github.com/apache/pulsar/pull/24739#issuecomment-3612256630

   @codelipenghui @lhotari @coderzc @Apurva007 @BewareMyPower @thetumbled @dao-jun
   
   **Update the JMH test results.**
   
   ```shell
   java -Xmx4g -jar microbench/target/microbenchmarks.jar \
          -p maxAdditionalUniqueMessages=5000000 \
          -rf json -rff jmh-result-$(date +%s).json \
          ".*BucketDelayedDeliveryTrackerBenchmark.benchmarkConcurrentAddMessage.*" \
          | tee jmh-result-$(date +%s).txt
   ```
   
   1. Current PR optimized implementation.
   https://gist.github.com/Denovo1998/ed2483ef8b0139aaef85663216f7c226
   https://gist.github.com/Denovo1998/2b83267e2e36636bc4dab2ef120ed72c
   <img width="3178" height="490" alt="CleanShot 2025-12-04 at 21 23 16@2x" src="https://github.com/user-attachments/assets/99253e05-471c-4018-8ebd-b6cd4308ca17" />
   
   
   2. Code branch implemented using synchronized.
   https://gist.github.com/Denovo1998/6ce77dbf8aced1b493f4ee7926e80a61
   https://gist.github.com/Denovo1998/81ab70285988e675ec1b5024faa6c3a7
   
   <img width="3124" height="504" alt="CleanShot 2025-12-04 at 21 22 50@2x" src="https://github.com/user-attachments/assets/6f8de0ce-aa07-4a79-a708-e2e821da1387" />
   
   
   


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