Newbi Sys Admin Under Training - Sar and Top not matching.
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You can type '1' in top and see different CPU instead of a combine one.
Maybe top show a percentage for 1 core (if you have 4 cores it could show even 400%) when you do not split the cores with the 1 key
and sar might use a percentage relative to the total so it could show 100% instead.
I'm not sure it is entirely correct, but my short experiments suggests something like this.
As suggested, top is non-normalised, so for multi-threaded processes, may report (significantly) above 100.
The duration the average usage is calculated over is also markedly diferent for the two tools.
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