// Save the time a request comes in<\/span><\/div>rack<\/span>*:::<\/span>request_start<\/span><\/div>{<\/span><\/div> self<\/span>-><\/span>start<\/span> =<\/span> timestamp<\/span>;<\/span><\/div>}<\/span><\/div> <\/div>
// Save the difference between the request's start and finish<\/span><\/div>rack<\/span>*:::<\/span>request_finish<\/span><\/div>{<\/span><\/div> @<\/span>length<\/span>[<\/span>self<\/span>-><\/span>path<\/span>]<\/span> =<\/span> quantize<\/span>(<\/span>timestamp<\/span> -<\/span> self<\/span>-><\/span>start<\/span>);<\/span><\/div>}<\/span><\/div><\/pre><\/div>\n \n <\/div>\n\n