[Nottingham] What's on top?

[Alan Pope]

On 17/04/06, Roger Light <rogerlight at gmail.com> wrote:
> On 17/04/06, Martin <martin at ml1.co.uk> wrote:
>
> > 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?
>
> us: User processes (normal programs)
> sy: System processes (ie. kernel)
> ni: Amount of "nice"
> id: Idle
> wa: Waiting for IO (disk)
> hi: Harware interrupt (IRQ)
> si: Software interrupt (often network traffic)
>

Further to this Andy Smith has crafted a nice page [0] about this and
more on his wiki [1].

Cheers,
Al.

[0] http://strugglers.net/wiki/
[1] http://strugglers.net/wiki/Linux_performance_tuning