Fwd: Discrepancy between OS memory and erlang virtual memory?

Hi,

We are eCommerce company and we use Erlang heavy in our production system.
We are facing one issue which we are not able to figure out.
My Erlang virtual machine shows 2.5GB memory usage but OS occupies 8GB plus
RAM and the application getting restarted from time to time after RAM
exhaust. We tried checking remote debugging no process is utilizing more
memory in the erlang application. Process memory is also showing 2.56 GB.
We are using ubuntu 20.04 and OTP 21.

VM
[image: VM.png]

Service Status
[image: Service status.png]

OS Memory.png
[image: OS Memory.png]

Erlang Memory
[image: erlang_memory_snap.png]

Also Attaching Pmap screenshot.

Is there anything we should be checking? How can we fix it? Any direction
will help.

*Regards,*

*Hitesh Vaghani* | Engineering

*E-Mail *|  hitesh.v@ <[email protected]>redbus.com | +91 9558476850

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