[Simh] Alpha simulator performance

[Villy Madsen]

Don't forget VMS mailboxes...  I've used them for inter-process and inter-system communication on both VMS and Windows.  A very elegant approach on both - although as I remember, somewhat more elegantly implemented on the VAX.

Villy

-----Original Message-----
From: simh-bounces at trailing-edge.com [mailto:simh-bounces at trailing-edge.com] On Behalf Of Alexander Schreiber
Sent: April 21, 2012 01:58
To: Dan Gahlinger
Cc: simh at trailing-edge.com
Subject: Re: [Simh] Alpha simulator performance

On Fri, Apr 20, 2012 at 09:01:11PM -0400, Dan Gahlinger wrote:
> 
> NT is not VMS or a reimplementation of it.

Well, it isn't straight VMS - but definitely based on VMS. I remember being in university and working my way through a VMS internals book (out of interest) and a short while later going through a lecture about modern OS internals which was based on Windows NT (IIRC 3.51 or so). Woah, that certainly was full of dj vu moments "wait, this is just like in VMS, but with some of the serial numbers filed off".

Given that Cutler was the core architect on both, that isn't exactly surprising. Even though some of the later silly ideas (putting the entire GUI subsystem into kernel mode to speed up graphics) were not his fault.

Kind regards,
            Alex.
--
"Opportunity is missed by most people because it is dressed in overalls and
 looks like work."                                      -- Thomas A. Edison
_______________________________________________
Simh mailing list
Simh at trailing-edge.com
http://mailman.trailing-edge.com/mailman/listinfo/simh