I tested socket.io with websocket-bench both on Windows and Ubuntu, why did it got difference performance? #48
Description
On Windows:
I installed websocket-bench 0.0.3, I tried to test total 6000 connections and concurrent connection per second is 100， in the total report, the duration is 60 seconds.
total report
┌────────┬─────────────┬────────┬──────────
│ Number │ Connections │ Errors │ Message Send │ Message Fail │ Duration(ms) │
├────────┼─────────────┼────────┼──────────
│ 6000 │ 6000 │ 0 │ 0 │ 0 │ 60086 │
└────────┴─────────────┴────────┴──────────
On Ubuntu: (4-core, 4G)
I installed websocket-bench 0.0.3 too. At the first time, I tried to test total 6000 connections and concurrent connection per second is 100, there are only around 4000 connection are successful, rest connections failed because connection timed out (over than 20 seconds).
I just changed the property 'timeout' for the connection from 20s to 50s in manage.js, so all connections are successful. The manage.js is in my path: /usr/local/lib/node_modules/websocket-bench/node_modules/socket.io-client/lib/manage.js
In the total report, the duration is around 94 seconds.
total report
┌────────┬─────────────┬────────┬──────────────┬──────────────┬──────────────┐
│ Number │ Connections │ Errors │ Message Send │ Message Fail │ Duration(ms) │
├────────┼─────────────┼────────┼──────────────┼──────────────┼──────────────┤
│ 6000 │ 6000 │ 0 │ 0 │ 0 │ 94444 │
└────────┴─────────────┴────────┴──────────────┴──────────────┴──────────────┘
The cpu of nodejs was not high, it kept around 40% - 50% during connecting.
Why was it so slow on Ubuntu when cpu was not high?
Could you please help me?
Thanks in advance.