Revert to use memory pressure

Author: bigbruno

include/swap-default.conf

@@ -59,8 +59,11 @@ swap_mode=auto
 
 ## swapfile_enabled=1              # Enable swap file management
 ## swapfile_path=/swapfile         # Base path for swap files
-## swapfile_chunk_size=512M        # Size of each swap file
+## swapfile_chunk_size=1G          # Size of each swap file
 ## swapfile_max_count=32           # Maximum number of swap files
+## swapfile_free_ram_perc=20       # Expand when free RAM < this %
+## swapfile_free_swap_perc=40      # Expand when free swap < this %
+## swapfile_remove_free_swap_perc=70 # Contract when free swap > this %
 
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 # MGLRU Anti-Thrashing