how to load test (more than 20 users) a web application using selenium grid

I have tried using Selenium G开发者_JS百科rid to test a website for 20 users, but it is actually simulating only 12 users. I want to test the application for 500 users. Please help.

Selenium might not be the right tool for load testing. You should probably check JMeter or some other performance testing tool. As mentioned in the selenium site, Selenium is primarily a functional testing tool. If you would still like to use Selenium Grid to do this testing, please provide more details on the error you are getting.