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Forum Thread Details
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  • memory
  • raspberry_pi
  • interrupts
  • leak
Related

interrupts gives memory leak

Former Member
Former Member over 11 years ago

Hi People,

 

I have a problem. This week I have installed my Raspberry and the PiFace. All software is the newest (install-date: 20-01-2014)

After installing, I tested it with: python3 /usr/share/doc/python3-pifacedigitalio/examples/blink.py

works fine.

 

When I test this script with Unix command: "top" to see the memory use, the %mem is stable.

 

When I start (from: /usr/share/doc/python3-pifacedigitalio/examples ):

 

python ./presslights.py &

or by

python3 ./presslights.py &


the memory use is rising. 

After 5 to 8 hours the scripts runs "out of memory".


The only difference with the blink.py script is:

====

   pifacedigital = pifacedigitalio.PiFaceDigital()

 

   listener = pifacedigitalio.InputEventListener(chip=pifacedigital)

   for i in range(4):

       listener.register(i, pifacedigitalio.IODIR_ON, switch_pressed)

       listener.register(i, pifacedigitalio.IODIR_OFF, switch_unpressed)

   listener.activate()

====


An other Python-script with interrupts (and I stript it totally) gave the problem with the out of memory problem.

After this, I tested the input handling, by using polling instead of interrupts.

With polling the memory is also stable.


My questions:

- Do more people have this problem with interrupts (latest Python version)?

- How can I solve it?


Best regards from the Netherlands,

Jack.



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  • Former Member
    0 Former Member over 11 years ago

    Hi I am experiencing the same issue, the issue seems to lie with the listener as I am pretty sure that I have tried everything else including manual garbage collection and clearing all variables manually after calling the functions. Does anyone have any further insight into this as of yet or possibly a workaround?

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  • Former Member
    0 Former Member over 11 years ago

    Hi I am experiencing the same issue, the issue seems to lie with the listener as I am pretty sure that I have tried everything else including manual garbage collection and clearing all variables manually after calling the functions. Does anyone have any further insight into this as of yet or possibly a workaround?

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