Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Sat, 24 Jun 2017 14:03:41 +0200 | Subject | Re: [PATCH 2/4 v2] x86: use common aperfmperf_khz_on_cpu() to calculate KHz using APERF/MPERF |
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On Sat, Jun 24, 2017 at 10:56 AM, Thomas Gleixner <tglx@linutronix.de> wrote: > On Fri, 23 Jun 2017, Len Brown wrote: >> This x86 native method to calculate MHz returns a meaningful result >> no matter if P-states are controlled by hardware or firmware >> and/or if the Linux cpufreq sub-system is or is-not installed. >> >> When this routine is invoked more frequently, the measurement >> interval becomes shorter. However, the code limits re-computation >> to 10ms intervals so that average frequency remains meaningful. >> >> Discerning users are encouraged to take advantage of >> the turbostat(8) utility, which can gracefully handle >> concurrent measurement intervals of arbitrary length. >> >> Signed-off-by: Len Brown <len.brown@intel.com> > > Reviewed-by: Thomas Gleixner <tglx@linutronix.de> > > Raphael, please take the whole lot through the cpufreq tree.
I will, thanks!
Rafael
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