[colug-432] conflicting CPU usage information

[William Yang]

On 04/05/2012 01:17 PM, Rick Hornsby wrote:
> Something is keeping the load high on two systems which are pretty
> much identically configured [...]

> From Linux Journal
> (http://www.linuxjournal.com/article/9001):
> 
> ===
> ...load averages do not include any processes or threads waiting on
> I/O, networking, databases or anything else not demanding the CPU.  

I am not convinced this is exactly what it seems on its face.  When I have
many processes in waiting on I/O on a Linux system, I expect to (and do)
see high load averages.  Oddly, the only places I remember seeing
substantial I/O wait is on NFS servers, though.  Those averages drop when
processes aren't waiting on I/O.

I suspect that, if Linux Journal is correct, that there's some additional
complexity to it.

	-Bill
-- 
William Yang
wyang at gcfn.net