Rancho-7 commented on PR #20301:
URL: https://github.com/apache/kafka/pull/20301#issuecomment-3150815090

   The updated usage of the tool with argument parser:
   
   ```
   (base) lansg:bin/ (KAFKA-19011✗) $ ./kafka-e2e-latency.sh  
--bootstrap-server localhost:9092 --topic test-topic --num-records 1000 
--producer-acks 1 --record-size 512 --record-key-size 64 --num-headers 5 
--record-header-key-size 64 --record-header-size 128
   0       26.187541
   Avg latency: 1.2853 ms
   Percentiles: 50th = 1, 99th = 3, 99.9th = 26
   ```
   
   It's compatible with the legacy version:
   
   ```
   (base) lansg:bin/ (KAFKA-19011✗) $ ./kafka-e2e-latency.sh localhost:9092 
test-topic 1000 1 512                                                       
[21:21:28]
   WARNING: Positional argument usage is deprecated and will be removed in 
Apache Kafka 5.0. Please use named arguments instead: --bootstrap-server, 
--topic, --num-records, --producer-acks, --record-size, --command-config
   0       45.907666
   Avg latency: 1.5202 ms
   Percentiles: 50th = 1, 99th = 6, 99.9th = 88
   ```


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