Re: CPU Usage?
Re: CPU Usage?
- Subject: Re: CPU Usage?
- From: Shawn Erickson <email@hidden>
- Date: Fri, 29 Mar 2002 15:04:59 -0800
On Friday, March 29, 2002, at 10:54 AM, Kyle Wheeler wrote:
Ran "top" to see what was going on and found that top itself uses
about 10% of available CPU cycles even when nothing else is been
done. Also "Terminal" is using another ~4%. On top of that I see
OmniWeb and iTunes using cycles, although both are not doing anything
other than being open apps in the dock. OmniWeb's usage really jumps
around, sometimes going as high as 40%. Can someone explain what's
going on here? Thank for any enlightenment.
Any process that is doing *anything* will use CPU cycles.
top: depending on what mode you use, top may have to sort things, it
certainly needs to format it's output, and it continually polls the
kernel to find out the information that it's displaying - so top uses
CPU cycles because it is doing exactly that.
If you run top in normal display mode it spend a lot of time probing
memory information for every task, etc. If you run it with the -d option
it will use a lot less CPU time.
-Shawn
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