#! /bin/sh

PATH=/sbin:/bin

# Max time to wait for writeout
MAX_AGE=120
CENT_AGE=$((100 * $MAX_AGE))
# Max percent of mem to use for dirty pages
DRATIO=10
# Once we write, do so until this many percent of mem is still in use
DBRATIO=1

case "$1" in
   start)
         echo -n 0         >> /proc/sys/vm/swappiness
         echo -n $MAX_AGE  >> /proc/sys/vm/laptop_mode
         echo -n $CENT_AGE >> /proc/sys/vm/dirty_writeback_centisecs
         echo -n $CENT_AGE >> /proc/sys/vm/dirty_expire_centisecs
         echo -n $DRATIO   >> /proc/sys/vm/dirty_ratio
         echo -n $DBRATIO  >> /proc/sys/vm/dirty_background_ratio
         ;;
   restart|reload|force-reload)
         echo "Error: argument '$1' not supported" >&2
         exit 3
         ;;
   stop)
         # No-op
         ;;
   *)
         echo "Usage: $0 start|stop" >&2
         exit 3
         ;;
esac
exit 0