Mongodb takes up physical memory

  mongodb, question

Mongodb takes up physical memory. We have a server with 8G of memory. When mongodb is not turned on, the physical memory only takes up 11%. When mongodb is turned on, the memory display of mongodb process is 60M, but the physical memory is already 99%. What is the reason? There is no way to optimize, we are in WINDOWS system.

I remember, a man named Tang Jianfa said: mongodb does not eat memory, but it was originally designed to intentionally occupy memory.