ssd

# see fstrim status
systemctl status fstrim.timer

# temporal files to ram in /etc/fstab
tmpfs    /tmp    tmpfs    noatime,nodiratime,nodev,nosuid,mode=1777,size=1G,defaults    0    0
tmpfs    /var/tmp    tmpfs    noatime,nodiratime,nodev,nosuid,mode=1777,size=1G,defaults    0    0

# add noatime to ssd root partition in /etc/fstab
/dev/mapper/kubuntu--vg-root /               ext4    noatime,errors=remount-ro 0       1

# limit swap usage in /etc/sysctl.conf
vm.swappiness=1
vm.vfs_cache_pressure=50
vm.dirty_writeback_centisecs=1500

# change IO scheduler in /etc/default/grub (really worth??)
GRUB_CMDLINE_LINUX="elevator=none"


# grub config in /etc/default/grub
GRUB_DEFAULT=2
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=3
GRUB_RECORDFAIL_TIMEOUT=3
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
GRUB_THEME=/opt/grub-themes/dark_squares/theme.txt