I did that a few months ago (http://boston.conman.org/2007/11/30.1 http://boston.conman.org/2007/11/30.1) and found some surprising results (http://boston.conma

I did that a few months ago (http://boston.conman.org/2007/11/30.1 http://boston.conman.org/2007/11/30.1) and found some surprising results (http://boston.conman.org/2007/12/02.1 http://boston.conman.org/2007/12/02.1)which showed that using getpid() wasn't a good test of system call overhead.