Re: [gentoo-user] AMD Phenom X6 + Linux + "Turbo Core" ???

[Volker Armin Hemmann]

On Saturday 04 December 2010, meino.cramer@×××.de wrote:
> Volker Armin Hemmann <volkerarmin@××××××××××.com> [10-12-04 01:24]:
> > On Friday 03 December 2010, meino.cramer@×××.de wrote:
> > > Hi,
> > >
> > > I googled this and found some other people asking the same question...
> > > But I didn't find the answer.
> > >
> > > I am using linux kernel 2.6.36.1 vanilla to run on a AMD Phenom X6
> > > 1090T/ASUS Crosshair IV Formula system.
> > >
> > > I enabled "ondemand" CPU frequency scaling givernor in the kernel and
> > > "Cool'n' Quiet" in the bios of the board. I also enabled "Turbo Core"
> > > in the bios (which says the 3200MHz is max and 3600 MHz in case of
> > > Turbo Core being used.. I disabled C1E.
> > >
> > > After Linux is booted (AMD64!) and idled, the CPU is running at 800Mhz
> > > (nice!) and at 3200 MHz when system is under load.
> > >
> > > But:
> > > With prime I put exactly two cores under load, so normally Turbo Core
> > > would kick in...but the clock of those both cores show 3200MHz instead
> > > of 3600MHz....
> > >
> > > How can I make use of the Turbo-Core feature unde Linux?
> >
> > and you looked at the speed using cat /proc/cpuinfo?
> >
> > Because the mhz displayed there are misleading. cpuinfo does not show at
> > which speeds it is acutally running if there is any oc/uc involved. An
> > overclocked cpu might show 2Ghz while it is running at 2.3GHz
> >
> > See:
> > http://www.phoronix.com/forums/showthread.php?t=26065
>
> No, I didn't.
>
> I looked at:
>
> /sys/devices/system/cpu/cpu[0-5]/cpufreq/cpuinfo_max_freq
>
> and it is saying
>
> 3200000
>
> .

same stuff.