Check_http or Webinject

Hi All
I want to be able to record the time it takes to download the entire contents of a webpage. Would check_http be abe to do the job or do I need to use Webinject?
Also I want to be able to log every responce time.

Under /use/local/nagios/var/archives it doesnt list the resp time of every test. Am I missing something?

Much Appreciated
Kiret

If you need something to record performance information returned by Nagios plugins, look no further than PNP (ederdrom.de/doku.php/nagios/pnp_en)

Thanks for your reply.
ANother question. Is PNP preferred over Cacti?

Anyone with any experience here?