On Wed, 1 Dec 2010, Alexander Schreiber wrote:
On Wed, Dec 01, 2010 at 11:17:29AM -0800, Zane H.
Healy wrote:
It does not have a BSD kernel underneath. It
uses the Mach
Microkernel. It has a BSD layer on top of that.
Which causes all kinds of "fun" for developers whose code has to be
aware of system details like signal handling. I remember the SBCL folks
doing some cursing about it ;-)
It also hurts performance based on tests I've seen in the past.
Zane