[GitHub] [kafka] lamberken commented on pull request #10469: KAFKA-12611: Fix using random payload in ProducerPerformance incorrectly

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lamberken commented on pull request #10469:
URL: https://github.com/apache/kafka/pull/10469#issuecomment-813000740


   hi @dengziming, I'm not familiar with this jmh benchmark tool, I can show 
you the performance metrics, use following test script.
   ```
   cd kafka_2.12-2.7.0
   ./bin/kafka-producer-perf-test.sh \
   --topic demo_p30 \
   --num-records 5000000 \
   --record-size 512 \
   --throughput 2000000 \
   --print-metrics \
   --producer-props \
   bootstrap.servers=kafka-001:9092 \
   batch.size=512000 \
   linger.ms=100 \
   buffer.memory=128000000 \
   compression.type=zstd
   ```
   
   ### Before patch, the compression-rate is 0.005
   
![image](https://user-images.githubusercontent.com/20113411/113504183-0b61de00-9569-11eb-8872-9d549b080e03.png)
   
   ### After patch, the compression-rate is 0.611 which is the real rate
   
![image](https://user-images.githubusercontent.com/20113411/113504194-27657f80-9569-11eb-82c3-f1fa092fc0dc.png)
   
   
   


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