Grant> Are you sure it's not Python buffering its input? Have you tried Grant> "python -u mympstat.py"?
>> Nope. -u unbuffers stdout and stderr, not stdin. It really must be >> mpstat being uncooperative. Grant> That's not what my python man page says: Grant> -u Force stdin, stdout and stderr to be totally Grant> unbuffered. On systems where it matters, also put Grant> stdin, stdout and stderr in binary mode. Grant> That's for 2.5.2, but that's how I remember previous versions Grant> working as well. I'm still running 2.4.5 at work. It's -u help: -u : unbuffered binary stdout and stderr (also PYTHONUNBUFFERED=x) see man page for details on internal buffering relating to '-u' Was stdin unbuffering maybe added in 2.5? Skip -- http://mail.python.org/mailman/listinfo/python-list