Calculating bandwidth

[nigelhoath]

Anyone could confirm I'm running in the right direction with this I would appreciate it.

I'm trying to calculate bandwidth for my application. I expect a max of 133 users per hour over a 2 mbit vpn

I measured the latency by ping = 150 msec.

Then I captured some network traces of specific transactions and calculated needing per hour to handle:

-- w/o compression or caching -- with compression and caching
message pairs -- 37082 -- 21505
packets client to server -- 70046 -- 53113
packets server to client -- 170255 -- 135753
bytes client to server -- 64835344 -- 7336108
bytes server to client -- 207190555 -- 33739835

Probably a bit noisy for a web type .net application using tcp on Microsoft as the users do very little. Logon, enter some numbers, log off.

What I would like is some guidance as to how to develop an algorithm to say if the current link would work and what the average message pair response time would be. Can I simply multiply and total up based on message pairs or do I have to take into account that a message pair with many packets will have a noticeable delay?

Any input gratefully received.