Re: [PATCH 0/2] cpufreq: ondemand: Eliminate the deadband effect

[Stratos Karafotis]

On 07/23/2014 02:50 AM, Rafael J. Wysocki wrote:
> On Monday, June 30, 2014 07:59:32 PM Stratos Karafotis wrote:
> > Hi all,
> >
> > This patchset changes slightly the calculation of target frequency to
> > eliminate the deadband effect (explained in patch 2 changelog) that it
> > seems to slow down the CPU in low and medium loads.
> >
> > Patch 1 introduces a new relation (RELATION_C) for the next frequency
> > selection, which chooses the closest frequency to target.
> >
> > Patch 2 is the actual change to ondemand governor.
> >
> > You may find graphs with the 'deadband' effect and benchmark results:
> > https://docs.google.com/spreadsheets/d/16kDBh5lyc6YvBnoS1hUa1t2O38z0xrWvaEj5XtJ8auw/edit#gid=2072493052
> >
> > Thanks
> >
> >
> > Stratos Karafotis (2):
> >    cpufreq: Introduce new relation for freq selection
> >    cpufreq: ondemand: Eliminate the deadband effect in low loads
> >
> >   drivers/cpufreq/cpufreq_ondemand.c | 11 +++++++----
> >   drivers/cpufreq/freq_table.c       | 12 +++++++++++-
> >   include/linux/cpufreq.h            |  1 +
> >   3 files changed, 19 insertions(+), 5 deletions(-)
>
> OK, I've queued up these two patches for 3.17.  We'll see if anyone sees
> any problems related to them.  Thanks!

Thank you!

Stratos
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