Rango load testing utility

Load testing utility for rango websocket server.

Configuration

VARIABLE	DEFAULT	DESCRIPTION
WS_POOL_SIZE	20000	Number of websocket clients to create
MSG_COUNT	1000	Number of messages to send
MSG_DELAY	30	Delay between sending two messages (ms)
WS_ADDR	ws://localhost:8080/	Address to connect to the websocket server (rango)
AMQP_ADDR	amwp://localhost:5672/%2f	Address to connect to the rabbitmq server

Notice that MSG_COUNT is the number of messages to be sent. As each sent message is broadcasted to each client the total number of received messages will be MSG_COUNT * WS_POOL_SIZE. E.g. 20_000_000 when default variable values are used.

Usage

Binary

prerequisites: rango should be up and running before executing the tester. As the tester ignores any websocket connection errors and will start sending messages right away after connecting to the rabbitmq server.

# build the binary
cargo build --release

# execute the tester
WS_POOL_SIZE=500 MSG_COUNT=1000 MSG_DELAY=0 cargo run --release

Keep in mind that total number of clients is limited to the number of available ports OS can provide. Inside a container it's 28232 (32768 - 60999 range).

Local containerized version

Builds and runs current directory inside a docker container. RabbitMQ server is provided along inside the docker container.

prerequisites: rango should be running before executing the command. Local version of the rabbitmq server should not be running on ports 5672, 15672. Otherwise the port collision will prevent the containerized rabbitmq server to start.

docker-compose -f docker-compose.local.yml up

Remote containerized version

Starts RabbitMQ server and 5 containers with 20000 client connections each (total: 100_000 simultaneous connections).

Has the same preconditions as the local containerized version.

docker-compose up

Measurements

100k clients, 1000 messages. Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz, 32Gb RAM, NVMe SSD

rango server and clients running on the same machine

worker2_1   | INFO rango_load_tester: Received 20000000 messages
worker2_1   | INFO rango_load_tester: Mean delivery time is 163193.80485250262ms
...
worker5_1   | INFO rango_load_tester: Received 20000000 messages
worker5_1   | INFO rango_load_tester: Mean delivery time is 168410.05409856033ms
...
worker4_1   | INFO rango_load_tester: Received 20000000 messages
worker4_1   | INFO rango_load_tester: Mean delivery time is 172133.4831429799ms
...
worker1_1   | INFO rango_load_tester: Received 20000000 messages
worker1_1   | INFO rango_load_tester: Mean delivery time is 179832.35141856552ms
...
worker3_1   | INFO rango_load_tester: Received 20000000 messages
worker3_1   | INFO rango_load_tester: Mean delivery time is 192133.97007096457ms