On 12/2/21, Stefan Monnier wrote: >>> The short story is that I have an Intel i3 windows 10 desktop with >>> cygwin installed and an Intel i5 debian desktop. > > [ Side note: terms like `i3` and `i5` are basically marketing names > equivalent to "cheap" and "average price". They do not correspond to > any specific set of features nor any specific performance level, so > they're of no technical relevance other than saying something like "an > intel CPU from ≥2009 with an amd64 instruction set". ]
I found this site that compares the two cpus I have https://www.cpu-world.com/Compare/414/Intel_Core_i3_i3-7100_vs_Intel_Core_i5_i5-9400.html >>> How do I get the intel cpu "turbo boost" fully engaged when I'm >>> running my script and go back into power save mode when the machine is >>> idle? > > That should be the default behavior (i.e. if you don't touch any cpu > power configuration). Unfortunately, it clearly is _not_ the behavior I get. .. and I hadn't touched any power config until I was trying things to get my 900 second execution time down around the 600 seconds it takes on the windows/cygwin machine. > In that case, /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor > should usually say `schedutil` nowadays AFAIK (which has replaced the > previous default of `ondemand`). hrmm... I get $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor powersave $ sudo cpupower frequency-set -g performance Setting cpu: 0 Setting cpu: 1 Setting cpu: 2 Setting cpu: 3 Setting cpu: 4 Setting cpu: 5 $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance Lee
