Foreman and thread safety

Hello,

there was an interesting question at ServerFault:

Will Foreman run under multithreaded passenger?

Since we have upgraded to Rails 4.1 which is thread safe by default,
this is an interesting question. I am commenting it that we are NOT
thread safe tho as our dependencies are unlikely all thread safe.

It would be interesting to do review of all runtime gems for thread
safety. I can imagine we could find a set of gems that can be. Maybe for
Foreman deployments without all the plugins or compute resources, I
don't know.

Anyone have experiences in this regard?

ยทยทยท -- Later, Lukas #lzap Zapletal