[erlang-questions] Garbage Collection, BEAM memory and Erlang memory

[Roberto Ostinelli]

On Wed, Jan 28, 2015 at 1:35 PM, Lukas Larsson <lukas@REDACTED>
wrote:
>
> Could it be that you at this point trigger a lot of garbage collections
> due to calling erlang:garbage_collect/1? If you do that on a lot of
> processes at the same time you might get an explosion in eheap memory usage.
>

I constantly hibernate long term processes, all along the run. Nothing
specific happens after a while.


On Wed, Jan 28, 2015 at 1:35 PM, Lukas Larsson <lukas@REDACTED>
 wrote:
>
> If you cannot get a crash dump, I would look for changes in
> erlang:statistics/1 counters, to see if that can indicate if something in
> the system is changing drastically at that point, i.e. the number of
> reductions executed, the number of gc's done etc etc.
>


The number of reductions stay constant:
https://cldup.com/SiwAVf1VT5-3000x3000.png

So does the number of GC:
https://cldup.com/9Q5ac7Q5eK-3000x3000.png

The process count is always the same:
https://cldup.com/tsuorbj06u-3000x3000.png

And the maximum message box length of any process in the system is always
between 1-3 (despite the peak at the start):
https://cldup.com/x4KYsykOrH-3000x3000.png

...Any other ideas? I'm getting appalled.

Best,
r.
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