Ricky Beam wrote:
Swap should be 2x physical ram. But one can get away with less.
There was a reasonably long discussion on lkml some time ago regarding this. The 2xRAM rule of thumb was useful with older machines, but should not be taken too seriously nowadays; I'd recommend between 256 and 512 MB of swap, no more (except as an emergency solution).
Cheers, Ivan.