Remove kernel tweaks while allocating swap and only allocate swap if we have more than 5GB of diskspace available

setup/system.sh

@@ -11,16 +11,19 @@ source setup/functions.sh # load our functions
 # prevent for instance spam filtering from crashing
 
 # We will create a 1G file, this should be a good balance between disk usage
-# and buffers for the system
+# and buffers for the system. We will only allocate this file if there is more
+# than 5GB of disk space available
 
 # See https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04
 # for reference
 
 SWAP_MOUNTED=$(grep "swap" /proc/mounts)
 TOTAL_PHYSICAL_MEM=$(head -n 1 /proc/meminfo | awk '{print $2}')
+AVAILABLE_DISK_SPACE=$(df / --output=avail | tail -n 1)
 if [ $TOTAL_PHYSICAL_MEM -lt 1900000 ]; then
 if [ -z "$SWAP_MOUNTED" ]; then
 if [ ! -e /swapfile ]; then
+if [ $AVAILABLE_DISK_SPACE -gt 5242880 ]; then
 	echo "Adding swap to the system..."
 
 	# Allocate and activate the swap file
@@ -31,15 +34,7 @@ if [ ! -e /swapfile ]; then
 
 	# Make sure swap is activated on boot
 	echo "/swapfile   none    swap    sw    0   0" >> /etc/fstab
-
-	# Make sure the system only swaps as a last resort
-	hide_output sysctl vm.swappiness=10
-	tools/editconf.py /etc/sysctl.conf vm.swappiness=10
-
-	# Make sure the systeem keeps the file system inodes in
-	# memory as long as possible
-	hide_output sysctl vm.vfs_cache_pressure=50
-	tools/editconf.py /etc/sysctl.conf vm.vfs_cache_pressure=50
+fi
 fi
 fi
 fi