Re: Linux v.s. Mac OS-X Performance

Douglas McNaught <doug@mcnaught.org>

From: Doug McNaught <doug@mcnaught.org>

To: Gregory Stark <stark@enterprisedb.com>

Cc: "Joshua D. Drake" <jd@commandprompt.com>, "Scott Ribe" <scott_ribe@killerbytes.com>, "Magnus Hagander" <magnus@hagander.net>, "Wolfgang Keller" <wolfgang.keller.privat@gmx.de>, "pgsql general" <pgsql-general@postgresql.org>

Date: 2007-11-28T01:54:25Z

Lists: pgsql-general

On Nov 27, 2007, at 8:36 PM, Gregory Stark wrote:

> I think (but I'm not sure) that the kernel in OSX comes from BSD.

Kind of.  Mach is still running underneath (and a lot of the app APIs  
use it directly) but there is a BSD 'personality' above it which  
(AIUI) is big parts of FreeBSD ported to run on Mach.  So when you use  
the Unix APIs you're going through that.

-Doug