[erlang-questions] Erlang OTP 18 memory leak / SSL

Siraaj Khandkar siraaj@REDACTED
Sat Sep 19 20:34:40 CEST 2015

On Sat, Sep 19, 2015 at 12:34 PM, Sereysethy TOUCH <
touch.sereysethy@REDACTED> wrote:

> Hello,
> I just recently updated Erlang to latest version OTP 18 on Ubuntu server.
> It uses cowboy (websocket), ranch, ssl, erlydtl & rabbitmq. It used to work
> fine in OTP 17. The program is correctly compiled but during the execution
> the memory kept increasing. I need to restart the process every one or two
> hours to free some memory.
> I have read a post here [
> http://erlang.2086793.n4.nabble.com/R18-Unbounded-SSL-Session-ETS-Table-Growth-td4713697.html]
> which discussed about the ssl_session_cache ETS table which can become very
> large.
> The process beam.smp can go up to more than 5G during a few hours of
> executions.
> I am not yet sure what is the root cause of this issue.
> Does anyone know how to fix this? Or where should I look at?

We just experienced the same after upgrading from 17.0 (leaking over
days/weeks) to 17.5.3 (leaking over hours). I should be able to share some
data in a few of days.
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