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This is a computer I built on Friday, using a new shiny Intel i7-14700 processor, and the heat-sink and fan that came in the box; it's running a fresh install of Ubuntu 22.04.
The load on it is absolutely constant - eight threads of heavy-duty number crunching running on one hyperthread each of the eight P-cores, with the outer loop executing every two milliseconds or so.
But the speed regulator is, at least according to the apocryphal Einstein quote, insane. Every time the core temperature drops below 80 centigrade it tries speeding up the cores; this rapidly makes the temperature soar, after two seconds it starts ramping down the speed until after fifteen seconds it's back where it started but the core temperature is at 90 centigrade. The core then cools over about forty seconds, at which point the regulator tries pumping up the speed again.
The load on it is absolutely constant - eight threads of heavy-duty number crunching running on one hyperthread each of the eight P-cores, with the outer loop executing every two milliseconds or so.
But the speed regulator is, at least according to the apocryphal Einstein quote, insane. Every time the core temperature drops below 80 centigrade it tries speeding up the cores; this rapidly makes the temperature soar, after two seconds it starts ramping down the speed until after fifteen seconds it's back where it started but the core temperature is at 90 centigrade. The core then cools over about forty seconds, at which point the regulator tries pumping up the speed again.
