I have a server wity 8 GB RAM
If I execute
it always returns this
tmpfs 4015732 0 4015732 0% /dev/shm
What does it means , I have 4GB unused RAM (0% used all day) ?
And some other doubts related to /dev/shm , please ;
If I see 0% usage all day should I reduce /dev/shm size , for example from 4GB to 1GB ?
If yes, HOW to reduce /dev/shm size ?
May I use this memory location /dev/shm to symlink some folder with heavy IOwait (disk usage) ?