Even though very basic, you can run a bunch of performance tests. These tests mainly measure the time it takes for all the nodes to get in sync after operations are performed.
These tests live in the tests/performance directory.
To start them, you can use the command-line mocha command. Example:
$ mocha test/performance/one-seed-many-replicas
Each one of the tests in this directory accepts two arguments from the command-line: the websocket-star server address and the number of peers.
Example:
$ mocha test/performance/one-seed-many-replicas.js /dns4/ws-star2.sjc.dwebops.pub/tcp/443/wss/p2p-websocket-star 20
...
Going to use websocket-star server at address /dns4/ws-star2.sjc.dwebops.pub/tcp/443/wss/p2p-websocket-star
Going to use 1 seed and 20 replicas
At the end of each test a line should be written with the time it took to reach convergence. Example:
Convergence reached for 10 replicas in 75 seconds