Re: kernel-x64-smp-multiprocessor-time util problem

[Bernd Petrovitsch]

On Wed, 2006-06-21 at 03:17 -0500, art@xxxxxxxxxx wrote:
> Quoting Bernd Petrovitsch <bernd@xxxxxxxxx>:
> > On Mon, 2006-06-19 at 18:04 -0500, art@xxxxxxxxxx wrote:
> >> on dual core amd-athlon under 64bit-smp core
> >>
> >> kernel compilation time:
> >>
> >> time make -j 8
> >> ...
> >> LD [M]  sound/usb/snd-usb-lib.ko
> >> LD [M]  sound/usb/usx2y/snd-usb-usx2y.ko
> >>
> >> real    18m0.948s
> >> user    26m6.270s    ------bad
> >> sys     4m22.256s    ------?bad
> >> [xxx@localhost linux-2.6.17]$
> >> --- real-clock time  is ~18 min -- user and system time doubled?
> >
> > How many virtual CPUs (i.e. HT is "2 CPUs") do you have in that machine?
[...]
> 1 CPU 2 cores = 2 (amd athlon x2 4200+)

What does "real" really measure?
What does "user" and "sys" really measure?

	Bernd
-- 
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