Originally Posted by fhj52
The kernel needs a little swap space.
Try 100MB(it actually uses less but that is a good number). The only other time swap is used depends on how much you have running at once or if some errant program has a memory leak. A memory leak w/o a large swap will quickly stall the system but in almost ten years, I only experienced that once. Even then, not a memory leak precisely.
The kernel can run without any swap space. Also, if the system runs out of memory, the kernel will begin killing stuff randomly to be able to allocate more.