Checking CPU Utilization
jeff vier
jeff.vier at tradingtechnologies.com
Mon Jan 19 22:25:42 CET 2004
On Mon, 2004-01-19 at 14:55, Jason Martin wrote:
> You didn't specify what platform, but on Solaris the 'iostat' command
> does such a thing.
Notably, though, in Solaris. 100% utilization does not mean the box is
'pegged', thanks to preemptive multitasking (something windows only
pretends to have).
This is why (as I said in another email on this thread), Load is the
correct way to judge a Unix (or Linux) server's...well...load.
Also, on a multiprocessor box, using iostat, 50% utilization doesn't
tell you if that's 25% per processor, 50% on one with 0% on the other or
somewhere in between. If that's important to you :)
Load is an excellent delimiter of activity once you get used to looking
at it.
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