For some reason I got it in my head that I wanted to see the correlation between the CPU temp in groove and the outside temperature. We've been going through a bit of a heat wave recently, with temperatures between 85 and 95 degrees for the past week. For those in warmer climes this may not seem like much, but I should point out that when you factor in humidity (usually well over 60%) it's a great recipe for hea Groove sits in my office, with an 8000 BTU A/C unit in the window. Unfortunately, circumstances mandate that the A/C unit is on the other side of the room from the server rack, which contains four servers, a DLT drive, wireless access point, various Ethernet switches, a KVM, shelves full of components in various stages of existence, and the small desk with another three systems underneath it. Add the lab to that, which currently contains a Compaq ML370G3, a Dell 2650, two terabyte SAN arrays, SAN switches cabling and so on, and you can easily have a heat problem.So, in about 10 lines of Perl, and a little leaning on MRTG, we have our graphs. Looks like next week will bring more heat our way. All this took was the Weather::Underground perl module, and data collected from the lm_sensors package presented to MRTG in a sane way and voila. I probably should have used RRDTool, since it would have enabled more data to be plotted, etc, but this works, and it only took about 20 minutes to accomplish. Once again, Perl to the rescue.