[erlang-questions] number of modules limit?

[Karlo Kuna]

thank you for useful info
this will be interesting to deal with

On Mon, May 8, 2017 at 1:26 PM, Dániel Szoboszlay <dszoboszlay@REDACTED>
wrote:

> Yes, this is a per-node limit (just like almost all other VM limits).
> Distributing modules on different nodes would work.
>
> Be aware though that by default the nodes would try to form a fully
> connected mesh, so if you would like to run them all on the same host (and
> same IP) the next thing you will run out of will be TCP ports. So start
> these nodes as hidden and/or try to distribute them over multiple
> IP-s/hosts.
>
> Cheers,
> Daniel
>
> On Mon, 8 May 2017 at 13:09 Karlo Kuna <kuna.prime@REDACTED> wrote:
>
>> so anyone knows if this limit is per node? if it is then distributing
>> modules on different node would be great option.
>>
>> On Sun, May 7, 2017 at 10:14 PM, Xavier Noria <fxn@REDACTED> wrote:
>>
>>> Is the limit was per node, perhaps sharding them could be a workaround.
>>> (But I do not know if the premise holds.)
>>>
>>> On Sun, 7 May 2017 at 21:53, Karlo Kuna <kuna.prime@REDACTED> wrote:
>>>
>>>> permise is that all are used
>>>>
>>>> and i would rather have them already compiled then in funs but that is
>>>> one options
>>>>
>>>> On Sun, May 7, 2017 at 9:49 PM, Gianfranco Alongi <
>>>> gianfranco.alongi@REDACTED> wrote:
>>>>
>>>>> You could purge unused modules and just keep the minimum necessary set
>>>>> at all times?
>>>>> Otherwise create the needed functions during runtime as funs and keep
>>>>> them in an ets table?
>>>>>
>>>>>
>>>>> On May 7, 2017 20:33, "Karlo Kuna" <kuna.prime@REDACTED> wrote:
>>>>>
>>>>> oh wow this limit is rather small !!!
>>>>> are there any suggestions how to work around it ?
>>>>>
>>>>>
>>>>> On Sun, May 7, 2017 at 9:19 PM, Dániel Szoboszlay <
>>>>> dszoboszlay@REDACTED> wrote:
>>>>>
>>>>>> Yes, there are limits for both the number of modules (65536) and the
>>>>>> number of exported functions (524288 = 8 functions/module for the maximum
>>>>>> number of modules).
>>>>>>
>>>>>> See erlang:system_info(info) for details, and in particular look for
>>>>>> the limits under the =index_table:module_code and
>>>>>> =index_table:export_list sections.
>>>>>>
>>>>>> Cheers,
>>>>>> Daniel
>>>>>>
>>>>>> On Sun, 7 May 2017 at 19:34 Karlo Kuna <kuna.prime@REDACTED> wrote:
>>>>>>
>>>>>>> I am currently working on app that has potential to contain large
>>>>>>> number of modules > 10 000
>>>>>>> these are mostly implementations of behaviours that are generated in
>>>>>>> runtime.
>>>>>>>
>>>>>>> My question is, what is most modules you have encountered in
>>>>>>> production in running erlang application, and is there practical limit on
>>>>>>> number of number of modules in system??
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>>>>>>
>>>>>
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