Re: [Xen-devel] [james-xen@xxxxxxxxxxxxxx: [Xen-users] Xen 4.2.0 - CPU Frequency Scaling]

[Konrad Rzeszutek Wilk <konrad@xxxxxxxxxx>]

On Sun, Sep 30, 2012 at 12:13 PM, James Dingwall <james@xxxxxxxxxxxxxx> wrote:
> Hi,
>
> I didn't get any response on xen-users for this issue but so I'm hoping
> -devel can help.

Lets see if we can help you.

>
> I have had problems using cpu frequency scaling since the
> xen-acpi-processor code was added to the mainline kernel source.  I
> wasn't sure if the problem I was seeing was related to the old version
> (4.1.2) of Xen that I was using but now I'm on 4.2.0 and it still exists
> I thought I would check if I have a misconfiguration or if I have
> discovered a problem.  My system is a dual AMD Opteron(tm) Processor
> 2423 HE on kernel 3.4.8.
>
> The xen command line is:
>  console=vga,com2 com2=115200,8n1 dom0_mem=max:2048M dom0_max_vcpus=2
> dom0_vcpus_pin

Do you nee the dom0_max_vcpus=2? If they are not present does the
problem persist?
>
> The CPU scaling information reported by xenpm is below.  The problem
> is that only cpuid 1 can be managed separately, all the others are

What exactly are you trying to manage? As in what are you doing?

> bundled together and cannot be handled independently which used to be
> possible with the old xen kernel.  If further information would be
> useful please let me know.
>
> Thanks,
> James
>
> # xenpm get-cpufreq-para
> cpu id               : 0
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 1
> affected_cpus        : 1
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 2
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 3
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 4
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 5
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 6
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 7
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 8
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 9
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 10
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> cpu id               : 11
> affected_cpus        : 0 2 3 4 5 6 7 8 9 10 11
> cpuinfo frequency    : max [2000000] min [800000] cur [800000]
> scaling_driver       :
> scaling_avail_gov    : userspace performance powersave ondemand
> current_governor     : ondemand
>   ondemand specific  :
>     sampling_rate    : max [10000000] min [10000] cur [20000]
>     up_threshold     : 80
> scaling_avail_freq   : 2000000 1500000 1300000 1000000 *800000
> scaling frequency    : max [2000000] min [800000] cur [800000]
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel
>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel