How to install rpk and test latency? 

Since you have Redpanda installed on AWS Linux, you can proceed with the steps mentioned earlier to test latency and throughput directly on your AWS setup. Here's a more tailored guide for your environment:

1. Install rpk on AWS Linux (if not already installed)

To ensure that you have rpk (Redpanda's CLI), you can install it by running:

bash

 

curl -LO https://packages.vectorized.io/rpk/ubuntu_20.04/amd64/latest/rpk.tar.gz

tar -xzvf rpk.tar.gz

sudo mv rpk /usr/local/bin/

Ensure that Redpanda is running before proceeding with tests:

bash

 

sudo systemctl start redpanda

2. Testing Throughput on AWS Linux

a) Using rpk

Test producer and consumer throughput directly:

• Producer Throughput Test:

bash

 

rpk topic produce --brokers localhost:9092 --key test-key --value test-value -n 10000 --rate 500

• -n 10000: Send 10,000 messages.
• --rate 500: Produce at 500 messages per second.
• Consumer Throughput Test: Consume messages and observe processing rates:

bash

 

rpk topic consume test-topic --offset oldest --num 10000

This will consume 10,000 messages from the topic and provide throughput results.

b) Using Kafka Tools (if needed)

If you have Kafka tools installed, you can use them for detailed throughput benchmarking.

• Producer Throughput (Kafka):

bash

 

kafka-producer-perf-test.sh \

    --topic test-topic \

    --num-records 100000 \

    --record-size 1024 \

    --throughput -1 \

    --producer-props bootstrap.servers=localhost:9092

• Consumer Throughput (Kafka):

bash

 

kafka-consumer-perf-test.sh \

    --broker-list localhost:9092 \

    --topic test-topic \

    --messages 100000

This will consume 100,000 messages from the topic and report the throughput.

3. Testing Latency on AWS Linux

a) Using rpk

For latency, you can use rpk to measure how fast Redpanda is processing your messages.

• Producer Latency:

bash

 

rpk topic produce --brokers localhost:9092 --key test-key --value test-value -n 10000 --latency

This will measure the time it takes to deliver each message to the broker.

• End-to-End Latency:
1. Produce 10,000 messages:

bash

 

rpk topic produce test-topic -n 10000 --rate 100 --value "Message with latency test"

2. At the same time, consume the messages:

bash

 

rpk topic consume test-topic --offset oldest

By comparing timestamps of message production and consumption, you can calculate the end-to-end latency.

4. Benchmarking Multiple Brokers (if applicable)

If your Redpanda cluster has multiple brokers, you can test performance across the cluster by producing to and consuming from multiple brokers.

bash

 

rpk topic produce --brokers broker1:9092,broker2:9092 --topic test-topic -n 100000

This will stress-test Redpanda across brokers in AWS and provide insights into scalability and throughput.

---

You can monitor system performance (CPU, memory, disk I/O) during the tests using AWS CloudWatch or the built-in top and htop tools.

Let me know if you'd like further optimization tips or a specific setup for large-scale tests!