Hi Rafael, On 2020.08.17 14:06 Doug Smythies wrote: > On 2020.08.06 05:04 Rafael J. Wysocki wrote: > > > Allow intel_pstate to work in the passive mode with HWP enabled and > > make it set the HWP minimum performance limit (HWP floor) to the > > P-state value given by the target frequency supplied by the cpufreq > > governor, so as to prevent the HWP algorithm and the CPU scheduler > > from working against each other, at least when the schedutil governor > > is in use, and update the intel_pstate documentation accordingly. > ... > > powersave governor: > acpi-cpufreq: good > intel_cpufreq hwp: bad > intel_cpufreq no hwp: good It occurs to me that my expectations as to what is meant by "powersave" might not agree with yours. For the powersave governor, this is what we have now: intel_cpufreq hwp == intel_pstate hwp intel_cpufreq no hwp == acpi-cpufreq == always minimum freq intel_pstate no hwp ~= acpi-cpufreq/ondemand Is that your understanding/intention? My expectation was/is: intel_cpufreq hwp == intel_cpufreq no hwp == acpi-cpufreq == always minimum freq intel_pstate no hwp ~= acpi-cpufreq/ondemand intel_pstate hwp == Unique. Say, extremely course version of ondemand. ... Doug
