Would someone provide instructions to configure memory allocation?
Given the sporadic kernel “out of memory”/dump messages, 3x increased swapping, and increasing application degraded response, it seems our app is sometimes running out of memory. Our system currently has 8GB mem and 2GB swap. Details below.
I have reviewed the instructions for adding more physical mem and swap at ("Cannot allocate memory" when upgrading) but have not been able to find details about how to allocate it.
When it comes to mem configs, we are using all defaults. The system recovers after a few minutes, but with increased usage - we think it’s time to get educated about how to improve performance. I am, however, unsure of where and how to configure this. Increase memory allocated for the docker instance, or for number of ruby unicorns (or both)?
I’m a sysadmin with no ruby and limited docker experience - so pointing me in direction of the config file, and syntax to use will help greatly.
Did you re-run discourse-setup after you upped your RAM? It will tweak the memory settings accordingly. You can also read the comments in app.yml and adjust them.
the plugin was paid for development by our organization, so unfortunately I am not allowed to expose the source code here. Also since the plugin works on other instances without an issue, this makes me thinking of increasing server memory resources for this particular one. The machine is a VM so I can easily double the memory amount and see if this will fix it.
Are the other instances also running Ruby 2.3.1-2~ubuntu16.04.14 ?
maybe nothing relevant but:
so this was clearly a Ruby bug. We tested across multiple versions of Ruby and determined that only rubies 2.3.x and 2.4.x were exhibiting the leak (apparently this was fixed in Ruby 2.5.0****).
