C Runtime Overhead
Now imagine the speed if you could get rid of the syscall overhead. You would have to write a lot more code (and it probably wouldn't run on Linux due to trying to access protected memory locations or IO ports), but it would be significantly faster.Aah, the promise of the Exokernel[1].[1] http://u.cs.biu.ac.il/~wiseman/2os/microkernels/exokernel.pd...