High-resolution user/system times?

[Oleg Goldshmidt]

On Wed, Jul 25, 2012 at 3:44 PM, Nadav Har'El <nyh at math.technion.ac.il>wrote:

>
> USER_HZ is just used to fake the reports to user-space, pretending the
> resolution is of USER_HZ. The actual measured resolution is of
> CONFIG_HZ.
>

Yes, but all this means is that the last digit of the result you get from
times(2) or getruser(2) is probably significant - it is still 10ms
resolution.


>
> > I am used to RedHat systems whose kernels normally come with HZ=100.
>

I was wrong, actually, I just went to kernel's .config and it was 1000 on
F15, CentOS6.2, and RHEL5.4 - I was fooled by USER_HZ, sorry.

-- 
Oleg Goldshmidt | pub at goldshmidt.org <oleg at goldshmidt.org>
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