Comment 4 for bug 2051342

@dsmythies thank you so much for sharing the results of your tests, really useful info!

I'm planning to do more tests setting the performance governor, I've been doing my initial tests only with the default Ubuntu settings, that means with the "Balanced" power mode enabled (that I think it's using intel p-states), so that may have affected my results.

I'm also curious to measure the power consumption of 250 vs 1000, since I expect to see a little extra power consumption with HZ=1000. But then I also want to enable the lazy RCU (boot with `rcu_nocbs=all rcutree.enable_rcu_lazy=1`) and see how much power we can save vs the impact on performance.

Overall, the point that I want to prove is that, yes, we may have small regressions here and there, but with these changes in place we can provide a huge flexibility for users, that will able to tune their system for improved responsiveness, CPU throughput, or power consumption, all using the default stock kernel.