- From: Ari Luotonen <luotonen@netscape.com>
- Date: Mon, 10 Jul 1995 21:57:39 -0700 (PDT)
- To: Prasad.Wagle@eng.sun.com (Prasad Wagle)
- Cc: www-talk@w3.org
> Ari Luotonen wrote on 23 Jun 1995 that Netscape servers store the > transfer time for each request. How is this calculated, that is, at > what points in the code are the timestamps recorded? The Netscape Proxy starts the timer just after the point when the request is fully received and translated, but just before the DNS server is contacted to resolve the remote IP address (or if it's already found in the proxy's IP cache, just before contacting the origin server). The timer is stopped when the remote server shuts down the connection. So in effect, it's measuring the network response time, which, in the case of the proxy, is the one of real interest. It's measured in seconds, which would be too big a unit for regular HTTP servers, but accurate enough for proxies (because proxies are bound by the network and remote server speed, not the speed of the server itself, so their typical response time is between 1 and 3 seconds, in average, depending on the internet connection). Cheers, -- Ari Luotonen ari@netscape.com Netscape Communications Corp. http://home.netscape.com/people/ari/ 501 East Middlefield Road Mountain View, CA 94043, USA Netscape Server Development Team
Received on Tuesday, 11 July 1995 01:04:48 UTC