CPU temp and sleep the unused cores

Discussion in 'Debian' started by stanleyseow, Apr 23, 2014.

  1. stanleyseow

    stanleyseow New Member

    Apr 16, 2014
    Likes Received:
    I've a quad version of the UDOO running on debian Wheezy armHF on a 12V power supply and when I touch the heatsink, it seems a bit hot when the CPU is idle.. the ambient temp is around 28-30C ...

    I'm using the command below to check the temp and it gives me around 45C on average ...
    cat /sys/devices/virtual/thermal/thermal_zone0/temp
    1. Is this CPU too high for idle state ?

    2. What are the commands to put the unused cores to sleep like on an Android phones ?

  2. peter247

    peter247 New Member

    Mar 10, 2014
    Likes Received:
    I would say that sounds about right .
    At this time in my room it is 18.4c , and my udoo is not total idle , but it`s running a firmata test script for the last day + 4 hours and webmin says 90% idle.

    my idle state is true idea !!!! , It`s Debian without any gui / server and scripts running.

    /sys/devices/virtual/thermal/thermal_zone0/temp - shows 46c

    I`ve tried compiling a kernel native and was monitoring the temp which stopped at 56c max , that`s with 100% all cores for nearly a hour.

Share This Page