Read the statement by Michael Teeuw here.
Strange issue
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Ha ha, not that great, my MM is as slow as a turtle again.
The used swap on my USB stick in the meanwhile is 1GB.
Cannot use any commands to investigate further.
Not very satisfactory. :frowning_face: -
@evroom Mine is not slow it works “fine” it just keeps restarting
I am really curious to see the output of that file and see whats causing this behavior
D -
If previous suggestions dont help, try removing the MMM-WatchDog module and see if it crashes anymore.
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@richland007
I re-read your first post and your problem is more restarting then actual crashing.
Of course a restart can be caused by a crash …
MMM-WatchDog tends to restart MM, so I too would suggest to remove this module.
In principle all it does is sending a ping and restarting MM using pm2 when a timeout occurs.
I also would expect to see some lines in the pm2 logs on WatchDog.
Can you do ?:pi@MagicPi:~ $ grep -i watchdog /home/pi/.pm2/logs/mm-out.log pi@MagicPi:~ $ grep -i watchdog /home/pi/.pm2/logs/mm-error.log
What is alo a good package to install is sysstat:
pi@MagicPi:~ $ sudo apt-get install sysstat
This allows for commands like iostat and sar.
vmstat 10 10 iostat 10 10 sar 10 10
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@evroom Ok so here is whats writen on that top.txt file
pi@SmartMirror:~ $ tail -F top.txt 834 pi 20 0 155396 17884 8104 S 0.0 1.9 23:20.77 lxpanel 582 root 20 0 211836 13576 2440 S 0.0 1.4 418:48.14 Xorg 457 alexapi 20 0 218108 10768 4772 S 47.4 1.1 878:20.67 python 721 pi 20 0 122032 10600 4792 S 0.0 1.1 8:34.40 PM2 v3.0.3+ 835 pi 20 0 154056 5184 4016 S 0.0 0.5 0:43.57 pcmanfm 18753 pi 20 0 47692 4896 3996 S 0.0 0.5 0:03.94 lxterminal 829 pi 20 0 53536 4432 3556 S 0.0 0.5 0:13.22 openbox 100 root 20 0 35220 3140 2980 S 0.0 0.3 2:16.35 systemd-jo+ 7236 pi 20 0 8112 3140 2712 R 15.8 0.3 0:00.07 top ============================================= Sat Nov 17 11:25:01 CST 2018 top - 11:25:01 up 3 days, 15:28, 1 user, load average: 0.56, 2.88, 4.35 Tasks: 135 total, 1 running, 89 sleeping, 0 stopped, 1 zombie %Cpu(s): 21.4 us, 5.5 sy, 0.0 ni, 69.4 id, 2.3 wa, 0.0 hi, 1.5 si, 0.0 st KiB Mem : 949452 total, 493928 free, 157456 used, 298068 buff/cache KiB Swap: 949440 total, 777124 free, 172316 used. 727276 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 582 root 20 0 218840 24540 12364 S 10.5 2.6 419:19.31 Xorg 502 root 20 0 45188 23400 14452 S 36.8 2.5 27:20.07 vncserver-+ 834 pi 20 0 155396 21680 10616 S 0.0 2.3 23:23.35 lxpanel 7558 pi 20 0 77052 21140 18404 S 0.0 2.2 0:03.37 leafpad 835 pi 20 0 154156 16420 13232 S 0.0 1.7 0:46.57 pcmanfm 721 pi 20 0 122032 14004 7360 S 0.0 1.5 8:34.81 PM2 v3.0.3+ 457 alexapi 20 0 218108 10772 4772 S 36.8 1.1 880:07.93 python 636 root 20 0 15416 9020 8820 S 0.0 1.0 3:55.73 vncagent 18753 pi 20 0 47692 8484 7164 S 0.0 0.9 0:04.22 lxterminal 829 pi 20 0 53724 5888 4220 S 0.0 0.6 0:13.49 openbox 953 pi 20 0 27236 5312 4812 S 0.0 0.6 0:03.05 vncserverui 873 pi 20 0 27816 4328 3676 S 0.0 0.5 0:40.96 vncserverui 804 pi 20 0 39468 3288 3000 S 0.0 0.3 0:02.79 gvfsd 100 root 20 0 35220 3196 3036 S 0.0 0.3 2:16.50 systemd-jo+ 7603 pi 20 0 8112 3180 2752 R 10.5 0.3 0:00.05 top top - 11:25:01 up 3 days, 15:28, 1 user, load average: 0.56, 2.88, 4.35 Tasks: 135 total, 1 running, 89 sleeping, 0 stopped, 1 zombie %Cpu(s): 21.4 us, 5.5 sy, 0.0 ni, 69.4 id, 2.3 wa, 0.0 hi, 1.5 si, 0.0 st KiB Mem : 949452 total, 493776 free, 157600 used, 298076 buff/cache KiB Swap: 949440 total, 777124 free, 172316 used. 727128 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 582 root 20 0 218840 24540 12364 S 11.1 2.6 419:19.33 Xorg 502 root 20 0 45188 23400 14452 S 50.0 2.5 27:20.16 vncserver-+ 834 pi 20 0 155396 21680 10616 S 0.0 2.3 23:23.36 lxpanel 7558 pi 20 0 77052 21140 18404 S 0.0 2.2 0:03.37 leafpad 835 pi 20 0 154156 16420 13232 S 0.0 1.7 0:46.57 pcmanfm 721 pi 20 0 122032 14004 7360 S 0.0 1.5 8:34.81 PM2 v3.0.3+ 457 alexapi 20 0 218108 10772 4772 S 61.1 1.1 880:08.05 python 636 root 20 0 15416 9020 8820 S 0.0 1.0 3:55.73 vncagent 18753 pi 20 0 47692 8484 7164 S 0.0 0.9 0:04.24 lxterminal 829 pi 20 0 53724 5888 4220 S 0.0 0.6 0:13.49 openbox 953 pi 20 0 27236 5312 4812 S 0.0 0.6 0:03.05 vncserverui 873 pi 20 0 27816 4328 3676 S 0.0 0.5 0:40.96 vncserverui 804 pi 20 0 39468 3288 3000 S 0.0 0.3 0:02.79 gvfsd 100 root 20 0 35220 3196 3036 S 0.0 0.3 2:16.50 systemd-jo+ 7608 pi 20 0 8112 3180 2752 R 22.2 0.3 0:00.07 top =============================================
I use the command
tail -F top.txt
right?? i dont know how to read the above file so let me know if you see anything strange …i have increased the swap file to install opencv a while back for facial recognition to install rapidly but i do not use a usb …i could if i have to.
As far as taking out the watchdog…commenting it out of the config.js should do the trick or do i have to uninstall it form the modules??
Will pm2 still restart the MM if it crashes without the watchdog (it does if you do ctrl+q) ??
D
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Okay, this calls for some more basics.
Print the whole file:
$ cat top.txtLoad the file in an editor:
$ nano top.txt
$ vi top.txtI am old-school, so I use vi, but nano is more Word-like.
To show the last 50 lines:
$ tail -50 top.txtTo show the first 50 lines:
$ head -50 top.txtWhere of course 50 is just an example.
To show text that is appending:
$ tail -f top.txtTo show text that is appending and re-open the file when necessary (useful for rotating log files):
$ tail -F top.txtOn disabling a module see the next reply.
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To disable MMM-WatchDog, edit the config.js file.
Locate:module: 'MMM-WatchDog',
Edit this like this:
module: 'MMM-WatchDog', disabled: true,
and restart MM:
$ pm2 restart mm
Use
pm2 list
to check if your application name actually is mm, or something else.
Later you can enable it again by updating config.js like this:
disabled: false,
This works for all modules.
When I test modules I normally leave the config lines and disable a module in this fashion. -
@richland007
On pm2 and restarting I cannot say many.
On using ctrl+q neither, as I only access my MM via ssh.Can you send the output of the following commands:
$ uname -a
$ swapon -s
$ free -h
$ cat /etc/dphys-swapfile | egrep -v ‘#|^$’
$ sudo service dphys-swapfile statusI just learned that swap is handled as a service.
Being old-school, this is something new to me :-) -
@richland007
Concerning your top.txt, was that the output on the moment that MM was restarted ?
I do not see obvious memory issues.
Only that vncserver and python are CPU hungry, but within limits.
And I do not see any electron processes. -
@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.