August 31st, 2009, 03:38 AM #1
How can my MacBook use more than 100% CPU?
Hi, being a new member, I hope this is the right section to post a question like this:
When I look at the running processes, my antivirus app uses almost 100%, and when it is scanning the disk, it uses more - i have seen up to 107%. The enclosed pic documents it.
Is it a error in the antivirus s/w or is it Mac OSX that doesn't know how to handle this.
Can it be rectified?
Is there any need to rectify this?
August 31st, 2009, 08:07 AM #2
Your MacBook technically has two processors (hence the "dual-core" moniker). Each core can be utilized up to 100%, and since you have two cores, your theoretical maximum processor usage is 200%.
If you had a quad-core machine, you could theoretically be using 400% at any one time (4 cores * 100% utilization/core).
This cannot be rectified nor corrected because it's not an error -- your MacBook is doing exactly what it should be doing, and is reporting processor utilization accurately.
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Hesselberg (August 31st, 2009)
August 31st, 2009, 03:21 PM #3
Thank you for the answer - it makes sense ...
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