# hdparm -I /dev/sda | grep -i trim (TRIMに対応しているかチェック) # systemctl enable fstrim.timer # systemctl start fstrim.timer
# cat /sys/block/sd*/queue/scheduler
or
# cat /sys/block/nvme*/queue/scheduler
# sysctl -w vm.swappiness=1 # sysctl vm.swappiness