Ping latency

[lamsf]

We are doing some ping latency tests. This is the scenario:

My laptop is connected to a public network and make continuous ping to yahoo site. The average latency we get is < 100 ms.

However, with the same laptop, I started 4 heavy ftp sessions and make continuous ping to yahoo site. This time, with the 4 simultaneous ftp sessions, the latency could go up to as high as 4000 ms.

Is this expected behaviour?
What is causing the high latency?

Is it the laptop limitation?
Is it the BW limitation?

Thanks alot.

 

[jimbopalmer]

Most high end network gear favors TCP and UDP traffic over IMCP traffic, so pings are not considered as important as FTP. OSes, Switches, and Routers all buffer traffic when congestion sets in, time spent in a buffer is all latency. I can't think of a reason it matters that it is a laptop. CPU speed, Disk speed, nor graphics speed should impact a ping.

I tried to remain child-like, all I acheived was childish.

 

[lamsf]

Thanks.
So, the high latency has nothing to do with the laptop.

Is there any tools which we can use to identify which switch, routers, etc is actually causing the high latency? Can tracert do that?

Besides using ping or tracert, is there any other tools which we can use to measure the latency in the network?

Thanks.

 

[technome]

Pathping


........................................
Chernobyl disaster..a must see pictorial

http://www.kiddofspeed.com/default.htm

 

[jimbopalmer]

Mileage from you to the server/186,000 X .6 X 100 is the speed of light in fiber, in milliseconds, this will be a large part of the latency.

I tried to remain child-like, all I acheived was childish.