ssd linux

from
http://askubuntu.com/questions/1400/how-do-i-optimize-the-os-for-ssds

 in fstab

add

tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/tmp tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/log tmpfs defaults,noatime,mode=1777 0 0
tmpfs /var/log/apt tmpfs defaults,noatime,mode=1777 0 0
none /var/cache unionfs dirs=/tmp:/var/cache=ro 0 0

add to the partitions the flags

noatime,nodiratime,discard


from https://wiki.archlinux.org/index.php/Solid_State_Drives
in /etc/sysctl.conf add



vm.swappiness=1
vm.vfs_cache_pressure=50

in /etc/grub.d/10_linux add

elevator=noop to GRUB_CMDLINE_LINUX 

add the --disk-cache-dir=/tmp/chrome flag to chrome,i.e. make the last line of

/usr/bin/google-chrome

as

exec -a "$0" "$HERE/chrome" --disk-cache-dir=/tmp/chrome "$@"