busybox: set minimum free memory for all platforms

Signed-off-by: Stephan Raue <stephan@openelec.tv>

packages/sysutils/busybox/init.d/07_sysctl

@@ -23,6 +23,17 @@
 # runlevels: openelec, installer, textmode
 
 progress "setup sysctl"
+
+  ########################################################################
+  ## set sysctl kernel params
+  ## proc/sys/vm/min_free_kbytes:
+  ## The free area is primarily useful to give the kernel enough memory
+  ## to act in situations where the swapper suddenly has to do a lot of work.
+  ## In other situations, you can make things worse, since you are
+  ## effectively giving less memory for applications.
+  ########################################################################
+  echo 8192 > /proc/sys/vm/min_free_kbytes
+
   if [ -f /etc/sysctl.conf ]; then
     sysctl -p /etc/sysctl.conf  > /dev/null 2>&1 &
   fi

projects/RPi/filesystem/etc/sysctl.conf

@@ -1 +0,0 @@
-vm.min_free_kbytes = 8192