[CentOS] cpuspeed problems with 5.2 and 2.6.18-92.1.18 kernel revision

MHR mhullrich at gmail.com
Wed Dec 17 23:20:37 UTC 2008


On Wed, Dec 17, 2008 at 3:00 PM, ArcosCom Linux User <linux at arcoscom.com> wrote:
> Ok, but is not working fine.
>
> The last try:
>   1) Power off the laptop along 2/3 hours.
>   2) Power on and log into gnome.
>   3) The cpuspeed monitor shows that all is working fine.
>   4) Some minutes after, the speed goes down to 800 MHz and no more wants
> to grow up. I can't change to force performance or using userspace and
> select the speed.
>
> Any help more about?
>
> If I launch any heavy compilation (as kernel compilation), the speed don't
> want to grow up. Really is working fine under these circumstances with the
> performance governor selected?
>

First, please do not top post in this forum / on this list.

Second, try this:

dd if=/dev/zero of=/dev/null <some huge number of blocks>

and see if that drives your cpuspeed up.

BTW, how are you checking the cpuspeed?  Are you looking at /proc/cpuinfo?

HTH

mhr


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