Hi Paul, Thank you for taking the time to reply! I have just ran the benchmarks using the v4.0.0 clients and if anything the latencies are actually worse than on client v3.9.1:
Kafka broker 3.9.1 client 3.9.1 50th percentile: 297 us 90th percentile: 366 us 99th percentile: 528 us 99.9th percentile: 1,460 us Kafka broker 3.9.1 client 4.0.0 50th percentile: 3,295 us 90th percentile: 5,418 us 99th percentile: 5,712 us 99.9th percentile: 6,602 us Kafka broker 4.0.0 client 3.9.1 50th percentile: 8,178 us 90th percentile: 10,355 us 99th percentile: 11,042 us 99.9th percentile: 13,638 us Kafka broker 4.0.0 client 4.0.0 50th percentile: 10,889 us 90th percentile: 13,914 us 99th percentile: 15,750 us 99.9th percentile: 18,167 us I did run the internal kafka-e2e-latency tool however did not see any noticeable difference, I believe this is because the tool is waiting for a record to be received before sending another and so overall the throughput would be lower than the setup I mention. Looking forward to see if you notice anything on your internal benchmarks. Regards, Dan This message and its attachments are confidential, may not be disclosed or used by any person other than the addressee and are intended only for the named recipient(s). If you are not the intended recipient, please notify the sender immediately and delete any copies of this message. LMAX Group is the holding company of LMAX Exchange, LMAX Global and LMAX Digital. Our registered address is Yellow Building, 1A Nicholas Road, London W11 4AN.
