Kernel Compilation

Just a quick question. What is the recommend amount of jobs to go at once to compile the kernel (or programs) and modules. At about what thresholds can I expect to see faster compiles and when is it excessive. Usually on my faster systems with more memory (1.5 Ghz 512MB) i use make -j 4 or -j 6. What do you gnu gurus out there think? -- #------------------------ #Eric Bambach #Eric@CISU.net #------------------------