Perhaps two weeks ago or so, I began having terrible latency problems whenever I began playing online. At first, I thought the wireless receiver (a USB device) on my computer was simply failing, but these problems also occur when using my laptop, and for my brother on his laptop (we share the same wireless network for about a month or so).
There doesn't seem to be a problem with internet connectivity in general (i.e., I have no problem browsing the net, streaming a movie, or downloading a file), but random spikes of lag, which would be much more noticeable when attempting to play, say, Team Fortress 2.
I'm trying to diagnose the problem, and my first idea was to check the consistency of the signal strength (i.e., a problem with my wireless router) vs. consistency of ping (i.e., a problem with my wireless provider).
Are there any programs I could use to test one or both of these? Note: I would like to be able to test over a period of time, because the problem is not consistent.