![]() But then all the cores stay in around the 2.5Ghz level or so, and even under sustained load, none of the cores scale all the way up. I can enable the "On demand" policy by enabling the service via systemctl and rebooting. With the "Performance" policy active, which is the default after the upgrade, all of the cores stay above the base frequency of 3.2Ghz at around 3.45-3.53Ghz. The policies available in 18.04 are "Performance" and "On demand". Under 18.04, the cores appear to ramp up and down in parallel. Prior to the upgrade to 18.04 (from 16.04), each core scaled individually and the "on demand" policy seemed to work well, with a core increased to turbo speed under load (for example a single thread working hard) and the other cores staying throttled. I have conky running on my desktop and it shows each of the 8 hardware core clock rates. I have an Intel i7-6900K, 8 cores/16 hyper threads.
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