Process and child Thread ram usage

Question

I am using gunicorn with two worker to run a Flask API for deploying an ML model. And I open Htop and press F5. It show like below: and I expand process with PID 246598. It show like below: I wonder that are child processes with PID: 247243, 247161,... is actually child threads of father process with PID 246598? And I see that these child processes use 0.2% MEM each, so each of them actually use 0.2% MEM or only the father process use 0.2% MEM and other child processes don't use that much. Because I scare that if Gunicorn clone identical processes so many times like that, it would use so many ram. Thanks you so much! JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

I would suggest using the free command to see the total used memory on the machine before and after starting the server. Looking at things like top can be misleading because a lot of the memory is shared (cloned) between threads or even processes and shared libraries. If you really want to dive deep, cat /proc/meminfo to get super detailed stats on all memory usage in the system like kernel caches, and do a before and after server startup comparison. And yes linux is annoying because many tools don't distinguish threads vs processes... a thread on linux is just a process with a few tweaks, both are started by clone(2)