[anshul]

There was a "Is swap necessary" discussion on lkml and kerneltrap[1] a while ago and iirc, someone in the know had said that the kernel does expect to have some swap to work with. So, I run all my machines with about 10M of swap space.

[1] http://kerneltrap.org/node/3202

[rythie]

Also as you try to maximise you memory usage you run the risk of the Out of Memory (OOM) Killer running which just kills of processes and they don't return, till you start them again. It's not nice.