Is there such a device or piece of software that I could set up to ping the internet at fixed intervals (say, once a minute) and record the date, time, and ping duration in CSV format?

I would like to print something I could take to my ISP to suggest that I didn't want to pay for internet connectivity that I wasn't receiving. This past week or 10 days has been horrific, probably less than half of the time have I actually had a connection.

I might like to run this on SWMBO's Macintosh, which uses only a fraction of the electricity that my power-hog Windows machine consumes, since the computer would have to remain on 24/7, but I am not at all comfortable trying to do anything remotely resembling system level on that evil machine.

Suggestions?

tanstaafl.