how do I know if the BIOS or the OS is throttling my CPU? (Linux)
7,376
To find the current CPU speed on all cores:
cat /proc/cpuinfo | grep "cpu MHz"
You can also check /sys/devices/system/cpu/cpufreq/policy{N}/scaling_max_freq
and see if it is consistent with your CPU model. Other files in the same directories may be of interest (energy_performance_preference
)
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Author by
horizonbrave
Updated on September 18, 2022Comments
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horizonbrave almost 2 years
I'm using Ubuntu Linux 18.04. I've been sold a secondhand Dell Precision M6700 Laptop with an underpowered power adaptor.
Apparently, the BIOS can recognize this condition, and I read somewhere that it will apply an extreme throttle to the CPU.
How can I check if the throttle is on or not?
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Ignacio Vazquez-Abrams about 6 yearsOther than checking the CPU speed?
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