* 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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