On Sun, Oct 31, 2010 at 06:40:26PM +0100, Alexey Fisher wrote:
> Am Sonntag, den 31.10.2010, 17:01 +0000 schrieb Peter Clifton:
> > On Sun, 2010-10-31 at 17:44 +0100, Alexey Fisher wrote:
> > > Hallo all,
> > >
> > > As i can understand if cpu do not get enough load it will work mostly in
> > > C4 mode and graphic perfome slow too. I think there is some thing wrong
> > > in this logic :)
> >
> > Yes, a little messed up.. try running your test at low screen-res with
> > this app running (once per core):
> >
> > int main( int argc, char **argv )
> > {
> > while (1);
> > }
> >
> > (gcc loop.c -o loop)
> >
> > Do you get the high frames per second (non-full-screen) then?
>
> Yes! it working smooth, with 60fps (i have only single core atom with HT
> enabled)
Why painfully compile a custom c app to keep the CPU busy?
Boot with processor.max_cstate=1
Much better performance? --> "BUG"!
("BUG" == "something should probably be done about these power management side
effects")
Andreas Mohr
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