"Simple" question about Activity Monitor

When Activity Monitor displays percentages, is that percentages relative to what else is running, or is that percentage of the CPU's processing capacity? Something that is using up 30-40% of the CPU's processing capacity is a lot more intense than something that is using 30-40% of the CPU's activity AMONGST the other threads running.
So which is it? Percentage of the CPU's processing CAPABILITY or percentage of what the processor is chewing on right now - regardless of how much more it could chew on.
This will help us decide if our current xserve (1G, 1CPU, G4) is adequate for our needs or we're constantly maxing out the processor and need to look for a faster server. I don't want to replace an older, but still adequate system just because newer is obviously faster.

It's entirely possible for a process to use more than 100% of a CPU.
In the case of a dual-CPU machine you could use up to 200% (100% x 2 CPUs).
In the case of a quad-core machine (2 x dual-core CPUs) you could see up to 400% (100% x 4 cores).
An 8-core server could see up to 800%
You see, the 100% mark is based on each CPU core, not all cores combined. I guess that wasn't clear in my earlier response.

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Question about Activity Monitor

I was looking at activity monitor to see how things were running and I noticed on %CPU I was between 125%-175%. Can it do this because it is a dual-core processor? And is this bad/a lot if that is the only program running?
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John

Post an image of your Activity Monitor. This is mine:
Make certain that you set it to show ALL PROCESSES and % CPU is set to display values from high to low.
Ciao.
Ignore the red circle.
Message was edited by: OGELTHORPE

Simple question about the Monitor tab in OVM Manager

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Peter Collins wrote:
What are the quantities of the y axis? Memory appears to be MB, but is CPU percent, or load? And what is disk utilization?CPU is load. Not sure what disk utilization is, sorry! I've sent this thread to the Oracle VM dev-list so hopefully someone can tell us. :)

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tim

"Simple" question about Activity Monitor

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