Raspi stuck after some python script in background

[komarek]

hello i am using a raspi 3b+ to run a few script in python (5 or 6)
These scripts are running some bot about twitter (with tweepy).. i take control of it through the vnc to launch scripts - every script in a single terminal window cause i need to debug the output)
it happens always after 3 or 4 days (sometimes less) that the raspi becomes unresponsive and i have to switch it off through the power switch.
I think it's a memory issue but i'm not sure... what u think it will be the solution and where do you think i should watch to find some useful log about it?

thanks

[DirkS]

I think it's a memory issue but i'm not sure... what u think it will be the solution and where do you think i should watch to find some useful log about it?

Well if you think it's a memory problem then you should probably start to monitor that regularly...
Most likely solution is to correct your programming errors.

[B.Goode]

Another possible diagnostic technique:

Instead of running 6 scripts, only start 3 of them. If the system runs stable beyond your 3 day horizon it suggests the problem lies with one of the scripts that are not being run. Conversely if your system still fails it is probably due to one of the scripts being run.

Continue this process to refine and focus in on the culprit...

Some people call it 'divide and conquer', others refer to it as a 'binary chop.'

[komarek]

I think it's a memory issue but i'm not sure... what u think it will be the solution and where do you think i should watch to find some useful log about it?

Well if you think it's a memory problem then you should probably start to monitor that regularly...
Most likely solution is to correct your programming errors.

do you mean i should make a script that logs out the memory level every xx minutes?
good idea

[DirkS]

do you mean i should make a script that logs out the memory level every xx minutes?

Whatever works best for you...
Although I do think you should also keep an eye on the per-process memory use

[komarek]

do you mean i should make a script that logs out the memory level every xx minutes?

Whatever works best for you...
Although I do think you should also keep an eye on the per-process memory use

can you please suggest me which command i should use for that?

[DirkS]

Maybe 'ps'?

Code: Select all

ps aux | grep python

[komarek]

it might not be a memory problem
i made a script to monitor the free memory and i saw that when the raspi disconnected from my terminal and became unresponsive there was 320mb still free of memory.
at that time 4 python script were running
what do you suggest me to do?
where should i find something in the system logs?