CPUs on top

Bruno Wolff III bruno at wolff.to
Fri Jan 11 07:12:11 UTC 2008


On Thu, Jan 10, 2008 at 15:35:22 +0100,
  Jordi Prats <jprats at cesca.es> wrote:
> Hi,
> On a multiprocessor machine with an smp kernel if I use top it shows 
> only one cpu:
> 
> Cpu(s):  2.4% us,  0.0% sy,  0.0% ni, 97.5% id,  0.1% wa,  0.0% hi,  0.0% si
> 
> What's causing this? /proc/cpuinfo is reporting more cpus than just 
> one... Onyone could help me?

By default the cpus are combined for this. Type '1' to get separate listings
for each cpu. There are two ways to calculate the percentage when in this
mode. Read the man page if you want some more info about this.




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