A good tip

[Kenneth Porter]

--On Tuesday, July 06, 2004 11:37 AM -0400 Jeff Ratliff 
<jefrat at earthlink.net> wrote:

> 	"Premature optimization is a root of all evil."
> Popularized by Donald Knuth, author of "The Art of Computer
> Programming." The point is that optimizing when you don't know
> you have a bottleneck is usually a waste of time.

Just saw this story linked from SlashDot:

<http://www.theregister.co.uk/2004/07/08/dtrace_user_take/>

It's about some wiz-bang performance monitoring utility from Sun, named 
dtrace, that's apparently really good at finding the hot spots in complex 
applications. 'Twould be cool to get this for Linux.