This might be a very basic troubleshooting question, but it's worth asking to make sure I'm testing things the correct way and interpreting results effectively.
I have a controlled start point (a server cluster under my control) and an uncontrolled endpoint (a data center I do not have physical or remote access to). As part of normal troubleshooting, I often need to establish latency numbers.
Currently, I've been using ping plotter or just a good old fashioned continuous
If I'm trying to establish more realistic end to end numbers (the software I'm working with is database software) I'll sometimes use Fiddler 2 to capture web traffic and compare some of the timers there (things like
ServerBeginResponse) to get a full end to end time.
What do you guys look at when determining numbers for straight network latency?