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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

Electron CPU usage

Scheduled Pinned Locked Moved Troubleshooting
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  • C Offline
    cdelaorden
    last edited by May 10, 2018, 2:54 PM

    Hi guys

    Im new to the forum and this project but I have some small experience with the Pis and having the same issue

    I think that its related to the video driver, using ‘sudo raspi-config’ and changing the video driver to one of the GL drivers resulted in a much lower cpu load in my case.

    Doesn’t matter if you choose full KMS or fake KMS as long as you dont use the legacy non-GL driver.

    It took my 4 CPU from full 100% to idle bellow 35%

    Im sure someone else with this problem can confirm this

    E M 2 Replies Last reply May 10, 2018, 9:09 PM Reply Quote 1
    • E Offline
      E3V3A @cdelaorden
      last edited by May 10, 2018, 9:09 PM

      @cdelaorden

      • How can we check the video driver without using rapsi-conf?
        in dmesg? in systemd journal?
      • How/where do you set the: ELECTRON_FORCE_WINDOW_MENU_BAR=1.
      • What would be the easiest way for users to check electron version from command line?

      "Everything I do (here) is for free – altruism is the way!"
      MMM-FlightsAbove, MMM-Tabulator, MMM-Assistant (co-maintainer)

      C 1 Reply Last reply May 11, 2018, 1:17 PM Reply Quote 0
      • C Offline
        cdelaorden @E3V3A
        last edited by May 11, 2018, 1:17 PM

        @e3v3a
        You can check it in the config.txt

        or just do a “tail /boot/config.txt | grep dtoverlay” to check what version is enabled

        all the rest of my configuration is the default one after a fresh install from the current version of MM and Raspbian, I havent touched anything from electron

        1 Reply Last reply Reply Quote 0
        • J Offline
          Juju
          last edited by May 14, 2018, 1:35 PM

          Omg, yes finally! :D
          First I followed this installation guide: https://forum.magicmirror.builders/topic/236/complete-setup-tutorial/3
          I had the electron CPU issue. So I downgraded to electron version 1.4.15. The CPU usage went down from 90% to 70%. It was still laggy as hell.
          I then formatted the microSD card and followed that youtube guide: https://www.youtube.com/watch?v=0Q04SKvibik
          Downgraded to 1.4.15 again and now it’s running great with a CPU usage of like 5% with spikes to 50%, when there is an animation on the screen.

          But I have one question.
          0_1526304772560_Unbenannt.JPG
          After I finished the youtube tutorial I have the “MagicMirror” and the “mm”. Both autostart when I boot the raspberry pi.
          Which use has the “mm”?

          M 1 Reply Last reply May 15, 2018, 1:49 AM Reply Quote 0
          • M Offline
            Mykle1 Project Sponsor Module Developer @Juju
            last edited by May 15, 2018, 1:49 AM

            @juju

            pm2 stop mm
            pm2 delete mm
            pm2 save
            rm ~/mm.sh

            Create a working config
            How to add modules

            1 Reply Last reply Reply Quote 2
            • M Offline
              MichMich Admin @cdelaorden
              last edited by May 19, 2018, 8:33 PM

              @cdelaorden I think you’ve found the issue! Awesome work!

              For others please note that when you start raspi-config and go to “Advanced Options” > “GL Driver”, the top one will always be selected, no matter which one is active. After selecting one of the two top drivers (GL), it might solve the hi CPU load issue …

              It solved it on a clean installed Pi 3 for me.

              1 Reply Last reply Reply Quote 0
              • M Offline
                MichMich Admin
                last edited by May 20, 2018, 11:41 AM

                I added some info about the Open GL driver to the Wiki:
                https://github.com/MichMich/MagicMirror/wiki/Configuring-the-Raspberry-Pi#enable-the-open-gl-driver-to-decrease-electrons-cpu-usage

                H 1 Reply Last reply May 23, 2018, 7:59 PM Reply Quote 3
                • H Offline
                  Hein-Jan @MichMich
                  last edited by May 23, 2018, 7:59 PM

                  @michmich

                  I seem to be running into some kind if trouble. My SD card failed, so I had to do a clean install. I decided to immediately go for the full KMS driver.
                  “$ tail /boot/config.txt | grep dtoverlay” results in “dtoverlay=vc4-kms-v3d”.

                  The CPU usage is alright, but “/home/pi/.pm2/logs/mm-error-o.log” states:

                  libGL error: MESA-LOADER: failed to retrieve device information
                  MESA-LOADER: failed to retrieve device information
                  MESA-LOADER: failed to retrieve device information
                  

                  I am having trouble with the monitor. I am using MMM-Remote-Control.
                  “MONITOROFF” results in “/home/pi/.pm2/logs/mm-error-o.log”:

                  Powering off HDMI
                  

                  “MONITORON” results in “/home/pi/.pm2/logs/mm-error-o.log”:

                  Powering on HDMI with preferred settings
                  
                  [E] Failed to power on HDMI with preferred settings
                  
                  { Error: Command failed: tvservice --preferred && sudo chvt 6 && sudo chvt 7
                  [E] Failed to power on HDMI with preferred settings
                  
                      at ChildProcess.exithandler (child_process.js:217:12)
                      at emitTwo (events.js:106:13)
                      at ChildProcess.emit (events.js:194:7)
                      at maybeClose (internal/child_process.js:899:16)
                      at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
                    killed: true,
                    code: null,
                    signal: 'SIGTERM',
                    cmd: 'tvservice --preferred && sudo chvt 6 && sudo chvt 7' }
                  Powering off HDMI
                  

                  I may be wrong but I feel this is related to the Full KMS driver.

                  Can anyone confirm? Does anyone have a solution?
                  I am way out of my depth here…

                  C 1 Reply Last reply May 24, 2018, 1:53 PM Reply Quote 0
                  • D Offline
                    Dom1n1c
                    last edited by May 24, 2018, 6:13 AM

                    @Hein-Jan I got the same issue.
                    A few minutes, the monitor could be controlled, but then “tvservice -p” fails to power on the monitor.

                    1 Reply Last reply Reply Quote 0
                    • C Offline
                      cdelaorden @Hein-Jan
                      last edited by cdelaorden May 24, 2018, 2:54 PM May 24, 2018, 1:53 PM

                      @hein-jan @Dom1n1c

                      Please use the fake kms driver instead “dtoverlay=vc4-fkms-v3d”

                      it its known that the full kms driver isnt compatible with tvservice plus other restrictions

                      EDIT:
                      Also with the fake KMS you can rotate the display from /boot/config.txt so I suggest @michmich using it as the preferred method in the wiki

                      1 Reply Last reply Reply Quote 2
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