Poor CPU usage under Ubuntu

Posted by remek on Super User See other posts from Super User or by remek
Published on 2010-05-05T13:09:23Z Indexed on 2010/05/05 13:59 UTC
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ubuntu

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cpu

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cpu-usage

Hello,

I just upgraded from Ubuntu 9.10 to Ubuntu 10.04 and I am now experiencing a strange problem. My computer has a quad-core processor, and when I am running several processes simultaneously, none of the cores is fully used. Before the upgrade, when I was running 4 processes, each of them was using 100% CPU (I could see that with the 'top' command). But now, CPU usage oscillates and is always pretty low. Has anybody an idea about this problem? Is it due to Ubuntu or to the program I am running?

Thank you very much in advance for your help!

Best, remek

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