* on-demand governor behavior on synchronous MP!!!
[not found] <CAF0TxbrWF+wR68vJqT+KxwgEby+aVv0HKxG4LUsPNH2-WnNRug@mail.gmail.com>
@ 2011-09-15 6:50 ` Murali N
2011-09-20 15:32 ` Dave Jones
0 siblings, 1 reply; 3+ messages in thread
From: Murali N @ 2011-09-15 6:50 UTC (permalink / raw)
To: cpufreq
Hi All,
I have a MP system where both the cores are running synchronously i.e.
both cores run using the same clock.
I would like to know how the "on-demand" governor takes care of this
scenario? There may be a case where both the cores are running but any
one of the core is under loaded, how this is handled in on-demand
governor?
Are there any existing solutions on any of the architectures? If NOT
how do i go for this?
--
Regards,
Murali N
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: on-demand governor behavior on synchronous MP!!!
2011-09-15 6:50 ` on-demand governor behavior on synchronous MP!!! Murali N
@ 2011-09-20 15:32 ` Dave Jones
2011-09-22 10:49 ` Murali N
0 siblings, 1 reply; 3+ messages in thread
From: Dave Jones @ 2011-09-20 15:32 UTC (permalink / raw)
To: Murali N; +Cc: cpufreq
On Thu, Sep 15, 2011 at 12:20:09PM +0530, Murali N wrote:
> Hi All,
> I have a MP system where both the cores are running synchronously i.e.
> both cores run using the same clock.
> I would like to know how the "on-demand" governor takes care of this
> scenario? There may be a case where both the cores are running but any
> one of the core is under loaded, how this is handled in on-demand
> governor?
see policy->related_cpus and ->cpus
Dave
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: on-demand governor behavior on synchronous MP!!!
2011-09-20 15:32 ` Dave Jones
@ 2011-09-22 10:49 ` Murali N
0 siblings, 0 replies; 3+ messages in thread
From: Murali N @ 2011-09-22 10:49 UTC (permalink / raw)
To: Dave Jones; +Cc: cpufreq
On Tue, Sep 20, 2011 at 9:02 PM, Dave Jones <davej@redhat.com> wrote:
> On Thu, Sep 15, 2011 at 12:20:09PM +0530, Murali N wrote:
> > Hi All,
> > I have a MP system where both the cores are running synchronously i.e.
> > both cores run using the same clock.
> > I would like to know how the "on-demand" governor takes care of this
> > scenario? There may be a case where both the cores are running but any
> > one of the core is under loaded, how this is handled in on-demand
> > governor?
>
> see policy->related_cpus and ->cpus
>
> Dave
>
>
Hi Dave,
"related_cpus" attribute displays the CPUs coordination map. whose
frequency is either coordinated by h/w OR s/w.
from the code i am didn't understood clearly how the cpufreq takes
care of setting the best optimal frequency based on both the cores
load into consideration?
--
Regards,
Murali N
^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] <CAF0TxbrWF+wR68vJqT+KxwgEby+aVv0HKxG4LUsPNH2-WnNRug@mail.gmail.com>
2011-09-15 6:50 ` on-demand governor behavior on synchronous MP!!! Murali N
2011-09-20 15:32 ` Dave Jones
2011-09-22 10:49 ` Murali N
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