Clock cpu always 600mhz

[yoyoRPI3]

hello guys,i have a problem.with the command vcgencmd measure_clock arm and with ./cpuburn a53,my raspberry pi 3 is always on 600mhz,it never go to 1200mhz.I don't have the full performance.What is the problem?THANKS

[Rive]

Power supply? Is red light blinking?

It will also go to 600 MHz if temp hits 85C. (without fan/heatsink cpuburn will hit 85C in approx 5-10 sec). Use sysbench instead.

See this thread (tells you how to install sysbench, etc): viewtopic.php?p=921165#p921165

Did you run update/upgrade? then reboot? It then will show warning indicators when you have voltage/power issues, or encounter thermal issues.

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sudo apt-get update
sudo apt-get upgrade
sudo reboot

[JimmyN]

Do you have "cpufrequtils" installed?

If so what do you get with

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cpufreq-info -s -m

[Rive]

Do you have "cpufrequtils" installed?

If so what do you get with

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cpufreq-info -s -m

my raspberry pi 3 is always on 600mhz,it never go to 1200mhz.I don't have the full performance.What is the problem?THANKS

This may be better. Try this:


Terminal 1 Check your governor (should be ondemand):

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cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

Terminal 2 (hit '1' to see all cores):

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top

Terminal 3:

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sudo apt-get install sysbench
while true; do vcgencmd measure_clock arm; vcgencmd measure_temp; sleep 10; done& sysbench --num-threads=8 --test=cpu --cpu-max-prime=10000000000 run

[yoyoRPI3]

Thanksss!!!I has a low power supply and there is the red light.
I changed the power supply and now my pi 3 works perfectly!

[AsylumET]

I've noticed this myself on 3 different Pi 3s now. Using a tested and confirmed 5 Amp power supply it doesn't appear to be a lack of power that seems to be causing the issue.

[fruitoftheloom]

FYI: The default idle for the Raspberry Pi 3B is arm_freq=600 and core_freq=250