Performance monitoring?

[bscott at ntisys.com]

On Fri, 20 Dec 2002, at 9:52am, mod+gnhlug at std.com wrote:
> I'm not sure I understand what you're trying to measure ...

  It sounds like he is trying to measure how big a bottleneck disk
performance is.  In other words, he wants to find out how much time does the
system spend waiting for the disk drive.  Is that accurate, Paul?

> ... note that you might find it difficult to characterize certain
> behaviors of your disk units if they have caches ...

  Since the cache will normally be enabled, one would what it included in
whatever benchmark you are running.  Running the benchmark under load over
time should smooth out an irregularities, and give you a better picture of
what you real-world performance is.

-- 
Ben Scott <bscott at ntisys.com>
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