Measuring instruction counts instead of cpu cycles or wall time can help. Or you can temporarily disable CPU boost clocks to stay within the thermal envelope. Y

Measuring instruction counts instead of cpu cycles or wall time can help. Or you can temporarily disable CPU boost clocks to stay within the thermal envelope. You should do that anyway since boosting is another source of noise. On linux it's as easy as echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo or echo 0 > /sys/devices/system/cpu/cpufreq/boost