How do I check if my RAM is being used as disk cache? Is that known as "swap"? I'm using the FreeMemory app which tells me that 371 MB is free right now. I hav

How do I check if my RAM is being used as disk cache? Is that known as "swap"? I'm using the FreeMemory app which tells me that 371 MB is free right now. I have a 120 GB SSD with 8 GB free.