socketcluster-stress

git clone https://github.com/pataiadam/socketcluster-stress.git
cd socketcluster-stress
npm i
WSE=ws node server.js

Open another terminal

node client.js

After few seconds, you should see something like this:

==================
|=|  TC/MC: 1000/1000
|=|  msgPublished: 213000
|=|  msgReceived: 212932
|=|  P/R: 1.0003193507786523
|=|  msg/sec: 12832.640269993371
==================

, where
TC/MC: connected clients/max clients
msgPublished: total number of emitted messages
msgReceived: total number of received messages
P/R: emitted/received ratio (should be ~1.0)
msg/sec: received messages/second

Kill the processes (server, client). Now, try to start with uws engine:

WSE=uws node server.js
#another terminal:
node client.js

Now you should see this:

==================
|=|  TC/MC: 1000/1000
|=|  msgPublished: 219000
|=|  msgReceived: 103204
|=|  P/R: 2.1220107747761716
|=|  msg/sec: 5204.700186595391
==================

With uws we got ~5000 msg/sec, but when we use ws the number is >12000 msg/sec.