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We did a performance test (using kafka-producer-perf-test.sh from a single m5.4xlarge EC2 instance). We had 3 m5.large EC2 broker instances on 3 different AZs within the same AWS region us-east-1, running Kafka version 2.3.1. Each broker had an EBS GP2 volume attached to it for data storage. All communication was plaintext and records were not compressed. The brokers each have 8 IO threads (num.io.threads), 2 replica fetcher threads (num.replica.fetchers) and 5 network threads (num.network.threads).

A1: Producer performance

The following table shows results from a producer performance test.  On the producer side, each record was 1 KB in size. The batch size (batch.size) and artificial delay (linger.ms) were left at their default values.

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