[Nottingham] What's on top?

[Martin]

Folks,

One of those little questions whose answer seems to be taken for granted...

What's all the "top" cpu state summary abbreviations mean?

eg:
Cpu(s):  3.9% us, 21.1% sy, 57.9% ni,  0.0% id,  0.0% wa,  1.6% hi, 15.5% si

So what's the wa, hi, si mean?

And the man page assumes that the answer is too obvious to bother giving 
any mention! :-(

Cheers,
Martin

-- 
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Martin Lomas
martin at ml1.co.uk
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