Failed to create dirty cpu scheduler on virtual server

[Alemuell]

Thanks Jesper, for the quick and helpful answer. Playing around with
those flags did indeed help.

Am 07.03.20 um 11:08 schrieb Jesper Louis Andersen:
> Try just running `erl` in the shell. If that fails, you can try toying
> with the flags +S +SDcpu and +SDio to control the amount of schedulers
> you have. As a conservative start you want these to be the number of
> available cores in the virtual machine. Check the limits in the
> virtual machine w.r.t. number of threads. You also have the +A
> parameter, which creates threads. So while the error occurs at the
> dirty scheduler thread spawn, it might be another thread pool using up
> your resources and imposing limits.
>
> (Aside: your virtual machine would have far more trouble with a Go
> program if it limits threads)
>
> On Fri, Mar 6, 2020 at 4:52 PM Alemuell <alemuell@REDACTED
> <mailto:alemuell@REDACTED>> wrote:
>
>     Hi there!
>
>     My issue: the requirement for installing some software I need is
>     to have
>     rabbitmq running which depends on erlang. So my first step is to
>     install
>     erlang. I'm working on a virtual server (!) which has Ubuntu 18.04 LTS
>     64bit running. I added the file
>     /etc/apt/sources.list.d/bintray.erlang.list with the following line:
>     "deb http://dl.bintray.com/rabbitmq-erlang/debian bionic erlang".
>     Then I
>     use apt to install erlang, which runs smoothly.
>
>     When I now try to start erlang on the command line I directly get:
>     "Failed to create dirty cpu scheduler thread 9, error = 11" (I can
>     provide erlang crash report if needed)
>
>     Searching for solutions for this issue already brought me to a
>     rabbitmq-discussion:
>     https://groups.google.com/forum/#!msg/rabbitmq-users/fQzBHvgL5rg/iW1S6ln6BwAJ
>     It seems to me, that I'm having exactly the same issue, but the
>     solution
>     presented there is not working for me. Also I believe, that the
>     issue is
>     related to erlang (since I don't even get to the point of installing
>     rabbitmq), thats why I wanted to post it on this erlang-list. The main
>     idea that the discussion in that rabbitmq-thread brings up, is,
>     that the
>     issue is related to working on a virtual server: it seems that
>     erlang is
>     not aware of the fact, that it can only use a limited amount of
>     cpu-ressources.
>
>     Does any one have an idea of how to fix that? I really don't
>     understand
>     a thing about erlang nor rabbitmq. I just need them to work for
>     another
>     software I want to use. Digging into docs of erlang is a bit
>     overwhelming to me and I don't really have an idea, where exactly I
>     would need to start looking. I have the feeling, that I would just
>     need
>     to add some configuration file or something similar, so that erlang is
>     told, how many threads it should open (not calculating it by itself).
>
>     I would really much appreciate any help!
>
>     Best,
>
>     alemuell
>
>
>
> -- 
> J.
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