[tor-bugs] #13140 [Ooni]: ooniprobe should realise that the system is out of memory

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#13140: ooniprobe should realise that the system is out of memory
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     Reporter:  hellais  |      Owner:  hellais
         Type:  defect   |     Status:  needs_review
     Priority:  normal   |  Milestone:
    Component:  Ooni     |    Version:
   Resolution:           |   Keywords:
Actual Points:           |  Parent ID:
       Points:           |
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Changes (by poly):

 * status:  new => needs_review


Comment:

 This patch (https://github.com/TheTorProject/ooni-probe/pull/389) handles
 situation where system is running out of RAM (#13140). If memory is below
 the critical value (default 25 MB), no new tasks are allow to start.
 Memory utilization is re-checked every 20 seconds. This patch uses the
 psutil library, which is cross-platform but 200-300 kilobytes in size.

 Thanks to r2r0 for the help with this patch.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13140#comment:2>
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