About the use of SSDs under Linux

1. These file systems can be mounted with the discard option: Ext4, XFS, JFS, VFAT

2. Periodic trim can be achieved using the Fstrim command, and continuous trim can be achieved using the discard tag when mounted.

3. digression, setting the value of swappiness to 1, can reduce the exchange with the data in RAM

To view the value of the current swappiness:

Cat /proc/sys/vm/swappiness

Temporarily set the value of the swappiness:

Sysctl vm.swappiness=

To permanently set the value of the swappiness:

Edit file:/etc/sysctl.d/-sysctl.confvm.swappiness=Ten

4. Using Noatime to mount can reduce write operations (after trial, not found to cause system function is not normal)

About the use of SSDs under Linux