How a batch system watches your processes and why it's so bad at it (2011)

This post is from 2011 and the techniques it describes have been superseded by cgroups. One of the followup posts is specifically about them: http://osgtech.blogspot.com/2011/07/part-iii-bulletproof-pro...

Might want to add [2011] to the title. The issues Brian discusses have been fixed/improved -- in HTCondor at least -- since this was written.