Money down the drain

For a few times now Thomas Bushnell of Google has given a presentation at UDS about Google’s private Ubuntu fork. One of the interesting tidbits he mentions is that deploying a system update that requires rebooting costs the company one million dollars in lost productivity.

This gives us a nice metric to evaluate how much other operations at googleplex might cost. If we assume that a reboot takes five minutes per person, then it follows that taking one minute of all Google staff costs two hundred thousand dollars. Let’s use this piece of information to estimate how much money configure scripts are costing in lost productivity.

The duration of one configure script varies wildly. It is rare to go under 30 seconds and several minutes is not uncommon. Let’s use a round lowball estimate of one minute on average.

That million dollars accounts for every single Google employee. What percentage of those have to build source code with Autotools is unknown, so let’s say half. It is likewise hard to estimate how often these people run configure scripts, but let’s be on the safe side and say once per day. Similarly let’s assume 200 working days in one year.

Crunching all the numbers gives us the final result. That particular organisation is paying $20 million every year just to have their engineers sit still watching text scroll by in a terminal.