I know what swap means so I am not asking about that. I just want to know what the specific number means in Swap Used. The word 'used' is past tense so does it mean all the swap used since I last rebooted so it is a cumulative figure that will keep getting bigger until the next reboot, but I never know what the actual current swap is at any point in time? Or does the figure really mean how much swap is being used at this particular point in time?