Commit 54060431bdbe6f0085144679630ce67843e92c6b

Lower readahead buffer to 256KB.

This can be tuned according to user feedback.
init
(1 / 1)
  
1414/bin/mount -t proc proc /proc
1515/bin/mount -t sysfs sys /sys
1616
17echo 2048 > /sys/devices/virtual/bdi/179:0/read_ahead_kb
17echo 256 > /sys/devices/virtual/bdi/179:0/read_ahead_kb
1818echo 7 > /proc/sys/vm/laptop_mode
1919echo 90 > /proc/sys/vm/dirty_ratio
2020echo 60000 > /proc/sys/vm/dirty_expire_centisecs