At 21.18 +0300 0-08-31, Antti-Juhani Kaijanaho wrote:
>> But most UNIX's nowadays run a Mach kernel or an equivalent (or at least
>> BSD UNIX, SUN and Linux).
>
>What do you mean by a Mach equivalent? IIRC none of those you mention
>are microkernels or derivatives of Mach. (GNU HURD runs on top of GNU
>Mach, but that's an entirely different story.)
Linux for Mac, the Tenon 4.4BSD UNIX I used on my Mac, as well as the new
4.4BSD UNIX MacOS X all run atop a Mach kernel (version 2.5 latter cases).
I thought other Linuxes did that as well (what about Linux fo Windows
computers?). Several years ago, I checked with Sun, and they said had
another kernel, which they (of course) claimed was better. The UNIX kernel
does not have threads, only programs as processes, so my sloppy wording
"Mach equivalent" would mean to have at least threads.
Hans Aberg
