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

    Strange issue

    Scheduled Pinned Locked Moved Troubleshooting
    24 Posts 6 Posters 9.0k Views 6 Watching
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    • cowboysdudeC Offline
      cowboysdude Module Developer @OceanK
      last edited by

      @oceank The BIGGEST problem that nobody either wants to admit or doesn’t realize is that the pi wasn’t made to be pounded on this hard.

      It’s a simple computer…when you start adding constant pulls for data and scrolling text, etc it over heats and overloads the pi.

      1 Reply Last reply Reply Quote 1
      • richland007R Offline
        richland007
        last edited by

        @evroom I appologise on the delay at answering i was at work during the weekend

        here is the autput from

        pi@MagicPi:~ $ grep -i watchdog /home/pi/.pm2/logs/mm-out.log
        pi@MagicPi:~ $ grep -i watchdog /home/pi/.pm2/logs/mm-error.log
        

        a bunch of these almost every 10-15 minutes

        Fri Nov 09 2018 09:52:50 GMT-0600 (CST) - WatchDog: Heartbeat timeout. Frontend might have crashed. Exit now.
        Fri Nov 09 2018 10:06:24 GMT-0600 (CST) - WatchDog: Heartbeat timeout. Frontend might have crashed. Exit now.
        
        
        WatchDog started. Maximum timeout: 20s.
        Module helper loaded: MMM-WatchDog
        Connecting socket for: MMM-WatchDog
        Starting module helper: MMM-WatchDog
        WatchDog started. Maximum timeout: 20s.
        Module helper loaded: MMM-WatchDog
        Connecting socket for: MMM-WatchDog
        Starting module helper: MMM-WatchDog
        
        

        Here is some sysstat output from the following commands

        vmstat 10 10
        iostat 10 10
        sar 10 10
        
        r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
         1  0  63744 209036  34364 567792    0    6    82    12  778  312 18  3 78  1  0
         0  0  63744 209036  34372 567824    0    0     0     2 2431  278  4  0 96  0  0
        
        avg-cpu:  %user   %nice %system %iowait  %steal   %idle
                  17.75    0.00    3.32    0.57    0.00   78.36
        
        Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
        mmcblk0          13.75       311.58        45.87     821628     120969
        zram0             1.77         0.95         6.13       2504      16164
        zram1             1.73         0.78         6.12       2068      16132
        zram2             1.70         0.74         6.08       1952      16028
        zram3             1.74         0.94         6.02       2480      15880
        
        
        06:44:46 PM     all      3.17      0.00      0.08      0.00      0.00     96.76
        06:44:56 PM     all      4.12      0.00      0.25      0.03      0.00     95.60
        
        
        1 Reply Last reply Reply Quote 0
        • richland007R Offline
          richland007 @evroom
          last edited by

          @evroom here is the rest of the commands you asked me to do :)

          pi@SmartMirror:~ $ uname -a
          Linux SmartMirror 4.14.52-v7+ #1123 SMP Wed Jun 27 17:35:49 BST 2018 armv7l GNU/Linux
          pi@SmartMirror:~ $ swapon -s
          Filename				Type		Size	Used	Priority
          /dev/zram0                             	partition	237360	15596	5
          /dev/zram1                             	partition	237360	15636	5
          /dev/zram2                             	partition	237360	15612	5
          /dev/zram3                             	partition	237360	15364	5
          pi@SmartMirror:~ $  free -h
                        total        used        free      shared  buff/cache   available
          Mem:           927M        135M        166M         16M        624M        718M
          Swap:          927M         60M        866M
          pi@SmartMirror:~ $ cat /etc/dphys-swapfile | egrep -v ‘#|^$’
          bash: ^$’: command not found
          
          pi@SmartMirror:~ $ sudo service dphys-swapfile status
          ● dphys-swapfile.service - LSB: Autogenerate and use a swap file
             Loaded: loaded (/etc/init.d/dphys-swapfile; generated; vendor preset: enabled
             Active: active (exited) since Sun 2018-11-18 17:49:07 CST; 1h 36min ago
               Docs: man:systemd-sysv-generator(8)
            Process: 358 ExecStart=/etc/init.d/dphys-swapfile start (code=exited, status=0
             CGroup: /system.slice/dphys-swapfile.service
          
          Nov 18 17:49:06 SmartMirror systemd[1]: Starting LSB: Autogenerate and use a swa
          Nov 18 17:49:06 SmartMirror dphys-swapfile[358]: Starting dphys-swapfile swapfil
          Nov 18 17:49:07 SmartMirror dphys-swapfile[358]: want /var/swap=100MByte, checki
          Nov 18 17:49:07 SmartMirror dphys-swapfile[358]: done.
          Nov 18 17:49:07 SmartMirror systemd[1]: Started LSB: Autogenerate and use a swap
          lines 1-12/12 (END)
          

          And on the top.txt file neither the first 50 nor the last 50 are not saying much about magic mirror but i am going to start it again and tail top.txt again once it crashes.

          Here is the output any how for the first and last 50 lines of the top.txt file

          pi@SmartMirror:~ $ tail -50 top.txt
            848 pi        20   0   27796   8972   8052 S   0.0  0.9   0:01.61 vncserverui
            809 pi        20   0   42752   8256   8116 S   0.0  0.9   0:00.09 lxpolkit
            890 pi        20   0   74324   7768   7596 S   0.0  0.8   0:00.15 gvfs-udisk+
          =============================================
          Sun Nov 18 19:25:01 CST 2018
          top - 19:25:01 up  1:25,  1 user,  load average: 0.39, 0.39, 0.37
          Tasks: 134 total,   1 running,  88 sleeping,   0 stopped,   1 zombie
          %Cpu(s): 12.5 us,  1.5 sy,  0.0 ni, 85.3 id,  0.3 wa,  0.0 hi,  0.3 si,  0.0 st
          KiB Mem :   949452 total,   169780 free,   140140 used,   639532 buff/cache
          KiB Swap:   949440 total,   887232 free,    62208 used.   734220 avail Mem 
          
            PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
            553 root      20   0  214532  54136  35564 S   0.0  5.7   3:10.64 Xorg
            719 pi        20   0  120620  28044  15252 S   0.0  3.0   0:06.59 PM2 v3.0.3+
            814 pi        20   0  144716  27976  24560 S   0.0  2.9   0:12.95 pcmanfm
            455 alexapi   20   0  191228  27236  13820 S   5.6  2.9  21:37.81 python
            481 root      20   0   45136  22548  13788 S   0.0  2.4   3:25.82 vncserver-+
           1840 pi        20   0   77044  21280  18496 S   0.0  2.2   0:08.20 leafpad
            812 pi        20   0  138632  20484  18116 S   0.0  2.2   0:21.17 lxpanel
           1656 pi        20   0   49308  20328  16408 S   0.0  2.1   0:40.59 lxterminal
            868 pi        20   0   27820  14160  12840 S   0.0  1.5   0:00.35 vncserverui
            806 pi        20   0   53684  13080  10916 S   0.0  1.4   0:02.33 openbox
            557 root      20   0   15416  10640  10312 S   5.6  1.1   0:29.86 vncagent
            673 pi        20   0   52180  10472  10140 S   0.0  1.1   0:00.85 lxsession
            848 pi        20   0   27796   8972   8052 S   0.0  0.9   0:01.61 vncserverui
            809 pi        20   0   42752   8256   8116 S   0.0  0.9   0:00.09 lxpolkit
            890 pi        20   0   74324   7768   7596 S   0.0  0.8   0:00.15 gvfs-udisk+
          top - 19:25:01 up  1:25,  1 user,  load average: 0.39, 0.39, 0.37
          Tasks: 134 total,   1 running,  88 sleeping,   0 stopped,   1 zombie
          %Cpu(s): 12.5 us,  1.5 sy,  0.0 ni, 85.3 id,  0.3 wa,  0.0 hi,  0.3 si,  0.0 st
          KiB Mem :   949452 total,   170032 free,   139888 used,   639532 buff/cache
          KiB Swap:   949440 total,   887232 free,    62208 used.   734472 avail Mem 
          
            PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
            553 root      20   0  214532  54136  35564 S   0.0  5.7   3:10.64 Xorg
            719 pi        20   0  120620  28044  15252 S   0.0  3.0   0:06.59 PM2 v3.0.3+
            814 pi        20   0  144716  27976  24560 S   0.0  2.9   0:12.96 pcmanfm
            455 alexapi   20   0  191228  27236  13820 S   0.0  2.9  21:37.81 python
            481 root      20   0   45136  22548  13788 S   0.0  2.4   3:25.82 vncserver-+
           1840 pi        20   0   77044  21280  18496 S   0.0  2.2   0:08.20 leafpad
            812 pi        20   0  138632  20484  18116 S   0.0  2.2   0:21.17 lxpanel
           1656 pi        20   0   49308  20328  16408 S   0.0  2.1   0:40.59 lxterminal
            868 pi        20   0   27820  14160  12840 S   0.0  1.5   0:00.35 vncserverui
            806 pi        20   0   53684  13080  10916 S   0.0  1.4   0:02.33 openbox
            557 root      20   0   15416  10640  10312 S   0.0  1.1   0:29.86 vncagent
            673 pi        20   0   52180  10472  10140 S   0.0  1.1   0:00.85 lxsession
            848 pi        20   0   27796   8972   8052 S   0.0  0.9   0:01.61 vncserverui
            809 pi        20   0   42752   8256   8116 S   0.0  0.9   0:00.09 lxpolkit
            890 pi        20   0   74324   7768   7596 S   0.0  0.8   0:00.15 gvfs-udisk+
          =============================================
          pi@SmartMirror:~ $ head -50 top.txt
          Fri Nov 16 22:55:01 CST 2018
          top - 22:55:02 up 3 days,  2:58,  1 user,  load average: 0.18, 0.31, 0.21
          Tasks: 132 total,   1 running,  88 sleeping,   0 stopped,   1 zombie
          %Cpu(s): 18.3 us,  4.2 sy,  0.0 ni, 74.3 id,  2.0 wa,  0.0 hi,  1.2 si,  0.0 st
          KiB Mem :   949452 total,   276412 free,   169288 used,   503752 buff/cache
          KiB Swap:   949440 total,   825760 free,   123680 used.   687104 avail Mem 
          
            PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
            582 root      20   0  219092  34684  17284 S   0.0  3.7 302:37.78 Xorg
            457 alexapi   20   0  210684  27312  13416 S   0.0  2.9 799:59.04 python
            834 pi        20   0  152648  26352  11692 S   0.0  2.8  19:11.56 lxpanel
            502 root      20   0   45188  23764  14620 S   0.0  2.5  26:30.86 vncserver-+
            835 pi        20   0  154056  17252  14084 S   0.0  1.8   0:33.17 pcmanfm
            721 pi        20   0  127960  16648   7700 S   0.0  1.8   6:21.25 PM2 v3.0.3+
           2011 pi        20   0   48208  12352  10328 S   0.0  1.3   0:10.66 lxterminal
            100 root      20   0   35220   9068   8840 S   0.0  1.0   2:10.19 systemd-jo+
            636 root      20   0   15416   9048   8840 S   0.0  1.0   3:51.37 vncagent
            829 pi        20   0   53536   6128   4664 S   0.0  0.6   0:09.74 openbox
            953 pi        20   0   27236   4904   4428 S   0.0  0.5   0:02.30 vncserverui
            873 pi        20   0   27816   4280   3616 S   0.0  0.5   0:32.84 vncserverui
              1 root      20   0   27024   3680   2972 S   0.0  0.4   0:12.38 systemd
            598 root      20   0    7272   3464   3192 S   0.0  0.4   0:01.09 bluetoothd
            979 raspoti+  20   0   18924   3432   3036 S   0.0  0.4   1:10.74 librespot
          top - 22:55:02 up 3 days,  2:58,  1 user,  load average: 0.18, 0.31, 0.21
          Tasks: 132 total,   1 running,  88 sleeping,   0 stopped,   1 zombie
          %Cpu(s): 18.3 us,  4.2 sy,  0.0 ni, 74.3 id,  2.0 wa,  0.0 hi,  1.2 si,  0.0 st
          KiB Mem :   949452 total,   276684 free,   168980 used,   503788 buff/cache
          KiB Swap:   949440 total,   825760 free,   123680 used.   687416 avail Mem 
          
            PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
            582 root      20   0  219092  34684  17284 S   0.0  3.7 302:37.78 Xorg
            457 alexapi   20   0  210684  27312  13416 S   5.9  2.9 799:59.05 python
            834 pi        20   0  152648  26352  11692 S   0.0  2.8  19:11.56 lxpanel
            502 root      20   0   45188  23764  14620 S   0.0  2.5  26:30.86 vncserver-+
            835 pi        20   0  154056  17252  14084 S   0.0  1.8   0:33.18 pcmanfm
            721 pi        20   0  127960  16648   7700 S   0.0  1.8   6:21.25 PM2 v3.0.3+
           2011 pi        20   0   48208  12352  10328 S   0.0  1.3   0:10.66 lxterminal
            100 root      20   0   35220   9068   8840 S   0.0  1.0   2:10.19 systemd-jo+
            636 root      20   0   15416   9048   8840 S   0.0  1.0   3:51.37 vncagent
            829 pi        20   0   53536   6128   4664 S   0.0  0.6   0:09.74 openbox
            953 pi        20   0   27236   4904   4428 S   0.0  0.5   0:02.30 vncserverui
            873 pi        20   0   27816   4280   3616 S   0.0  0.5   0:32.84 vncserverui
              1 root      20   0   27024   3680   2972 S   0.0  0.4   0:12.38 systemd
            598 root      20   0    7272   3464   3192 S   0.0  0.4   0:01.09 bluetoothd
            979 raspoti+  20   0   18924   3432   3036 S   0.0  0.4   1:10.74 librespot
          =============================================
          Fri Nov 16 23:00:01 CST 2018
          top - 23:00:01 up 3 days,  3:03,  1 user,  load average: 3.02, 1.49, 0.69
          Tasks: 138 total,   4 running,  91 sleeping,   0 stopped,   1 zombie
          %Cpu(s): 18.4 us,  4.2 sy,  0.0 ni, 74.3 id,  2.0 wa,  0.0 hi,  1.2 si,  0.0 st
          

          Thank you
          D

          1 Reply Last reply Reply Quote 0
          • richland007R Offline
            richland007
            last edited by

            Its holding better i haven’t seen it restart in the past few hours i think MMM-watchdog was the problem

            1 Reply Last reply Reply Quote 0
            • evroomE Offline
              evroom
              last edited by

              @richland007
              Unless someone tells different, from my point of view you do not have any CPU or memory issues.
              In fact, it makes me wonder why I am seeing the electron.js processes so high in my output.

              I do not use MMM-watchdog and I do not know exactly what it is doing.
              Do not know what it is pinging, but something on your MM makes it time out and as a cause it restarts mm.
              The log only tells you that it failed, but not what exactly failed.
              Would be nice to know how you can send this ping manually, then you can observe the behavior yourself.

              I take it, that you have your monitor connected to your Pi.
              So MM not running as server only and the display not on a client.

              Anyway, good to hear that you potentially have found the issue and you learned a bit of Linux on the side.

              MagicMirror version: 2.30.0
              Raspberry Pi 4 Model B Rev 1.5 (8 GB RAM)
              Raspbian GNU/Linux 12 (bookworm)

              Test environment:
              MagicMirror version: v2.30.0
              Raspberry Pi 3 Model B Plus Rev 1.3 (1 GB RAM)
              Raspbian GNU/Linux 12 (bookworm)

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