in reply to one-liner hogs

jptxs: Your suggestion of "one liners" seems suspect to me. Why would these be better than having a perl programmer write several of these into a small program. Your engineers run one program and select the type load they want to test, or demo. If done properly you could combine several of these to run at the same time, while keeping the ability to kill it at will. (That would be a good idea in any event).