BUG #17309: Memory consumption

The following bug has been logged on the website:

Bug reference:      17309
Logged by:          raj adi
Email address:      vihari.postgresdba@gmail.com
PostgreSQL version: 13.2
Operating system:   linux
Description:        

Hi Team,

We are configured postgres 13.2 version in the EKS cluster. We are facing
high memory consumption. we have 60GB of  RAM and with in one week almost
the memory is reaching 40 GB. I found one of the checkpointer background
process is consuming 16.1 % memory. I never seen this much memory
consumption in the postgres. Please provide any option to resolve this
memory issue. Kindly let me know if any memory leak in the postgres 13.2
version.

USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
1001       101  0.0 16.1 10858488 10534144 ?   Ss   Nov14  17:18 postgres:
checkpointer

Thanks and Regards,
Vihari