title: Tool for load-testing a website by requests per second
body: <p>I need a tool similar to ApacheBench but with the ability to specify the requests per second.</p>
  
  <p>This tool needs to be runnable from the command line on Windows (any scripting languages, Ruby, Python etc are fine) and should be able to output results to file.</p>
  
  <p>Bonus points if it can generate graphs or produce data files that can easily be graphed.</p>