Nicolas Calimet <pov### [at] freefr> wrote:
> > beta14. how can I activate my second core?

> will use 2 render threads, which means both of your cores should be used at
> nearly 100% for rendering (if nothing else is taking up cpu power).  You might

How should this possible ?


A normal user have only a limited bandwith of CPU-power and this is far
away from 100% CPU power. Because a program/user wich gets realy 100% of
the  CPU power would block the computer for all other programs/users.
And this can not be allowed in a Multiuser-System.
(btw. web-severs handles this in the same way, by a bandwith-control).

So the "top" command shows only the capacity of the User-Bandwith....not
the absolute CPU usage.


You can verify this very simple. Go to the "root-mode" and start
provray with the highest possible "nice value" of the privileged mode.
In this mode povray gets *much more* CPU-power than a normal user can
ever get....this reduce on the one hand the Rendering-time,
on the other hand, it is nearly impossible to do any other things
one this computer during the render-time.

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