I turned off swap on my desktop. Even if you have a lot of RAM swap just becomes an annoyance during development. Sooner or later you have some runaway process eating up all the memory. If the system starts swapping it will take a long time to recover (unless you're lucky enough to hit Ctrl-C within a few seconds and the app responds to it). Even with swap off there are long pauses when the system is low on memory, maybe it just waits too much before the OOM killer kicks in, but its more usable than with swap on.