ext4 I/O performance parameters in / partition

For best performance in SSD units these parameters must replace the defaults in /etc/fstab

defaults,noiversion,auto_da_alloc,acl,user_xattr,noatime,errors=remount-ro,commit=20,inode_readahead_blks=64,delalloc

All in one line

I usually don't include acl,user_xattr in my desktop machines, but for multiuser machines (servers), it could be useful if you really want to use these settings

Apply changes by remounting:

mount -o remount /

Source: https://www.linuxliteos.com/forums/tutorials/fast-disk-io-with-ext4-howto/