Irule for getting total response time, server response time and server connection time

Hi Kevin.

First of all, thanks for the answer. But the total_time is not the upstream time. It is the time between the events HTTP_REQUEST and HTTP_RESPONSE_RELEASE. I understood that it is the time transcurred since the request came to de F5 until it responds to the client. The upstream time it the time between HTTP_REQUEST_SEND and HTTP_RESPONSE. The connection_time should be smaller than total_time, because the LB_SELECTED and SERVER_CONNECTED happend between HTTP_REQUEST and HTTP_RESPONSE_RELEASE. How can the connection_time be greather than the total_time?

Thanks!!