osx - Can't enable swapping in mac os x 10.8.3 - Super User

osx - Can't enable swapping in mac os x 10.8.3 - Super User

some time ago a disabled swap. I need to enable it now and i was not managed to do it with help of

sudo launchctl load -wF /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist & reboot  

my virtual memory properties:

sudo defaults read /Library/Preferences/com.apple.virtualMemory  {      DisableEncryptedSwap = 0;      UseEncryptedSwap = 1;  }  

and swap usage is

sysctl vm.swapusage  vm.swapusage: total = 64.00M  used = 0.00M  free = 64.00M  (encrypted)  

At this very moment i have 4 gb active memory used and 1 gb wired and 2 gb inactive. my mac book pro has 8gb RAM. Activity monitor shows that swap is not used( i mean swap = 0 bytes, page outs = 0 bytes)

Can anybody help me to enable swapping back?

UPDATE: I just loaded all 8 gb that my mbp has and osx started to use swap file.

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