[erlang-questions] beam is crashed due to out of memory & it is not started automatically after that even used heart
Wed Jun 28 16:50:35 CEST 2017
you can tell OOM to not kill some process . for heart, somewhere in your start script do :
pgrep -f "heart -pid" | while read PID; do echo -17 > /proc/$PID/oom_adj; done
-17 is the value to let OOM ignore the process.
> Message du 28/06/17 12:58
> De : "Magnus Henoch"
> A : "Sanath Prasanna"
> Copie à : "erlang-questions"
> Objet : Re: [erlang-questions] beam is crashed due to out of memory & it is not started automatically after that even used heart
> Sanath Prasanna writes:
> > Hi all, My system is going down due to out of memory & it is not
> > auto started even set -heart command in starting. What is the
> > reason for this ? Can someone explain how to overcome this
> > problem. (not starting system automatically using heart) Br,
> > Robert
> > /var/log/message
> > aa_hub kernel: [60952995.574233] Out of memory: Kill process
> > 2480 (beam.smp) score 498 or sacrifice child Jun 27 13:31:07
> > aa_hub kernel: [60952995.577670] Killed process 2565 (heart)
> > total-vm:8408kB, anon-rss:92kB, file-rss:0kB Jun 27 13:31:07
> > aa_hub kernel: [60952995.584754] epmd invoked oom-killer:
> > gfp_mask=0x201da, order=0, oom_score_adj=0 Jun 27 13:31:07
> > aa_hub kernel: [60952995.587996] epmd cpuset=/ mems_allowed=0
> > startup command
> > /system/bin/run_erl -daemon /system/test/pipe/ /tmp
> > "/system/bin/start_erl /system /system /system/bin/start_erl
> > -smp auto* -heart -*sname test +64 +P10000 +B i -setcookie test"
> I've seen the same issue. The problem is that the OOM killer
> identifies a process to kill, and then kills all its child
> processes before killing the chosen process itself. Since heart
> is a child process of the beam process, it doesn't have a chance
> to restart the Erlang VM.
> I tried to fix it with the patch below, but it didn't work for
> some reason - I don't remember the details. I ended up solving
> the problem by addressing the memory usage itself.
> erlang-questions mailing list
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