Subject: Re: Efficient IPC mechanism on Linux
From: Stewart Smith <stewart@linux.org.au>
To: Luca Veraldi <luca.veraldi@katamail.com>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <00f201c376f8$231d5e00$beae7450@wssupremo>
References: <00f201c376f8$231d5e00$beae7450@wssupremo>
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Date: Thu, 11 Sep 2003 00:21:14 +1000
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hrm, you may find things related to the Password-Capability system and
the Walnut kernel of interest - these systems take this kind of IPC to
the extreme :) (ahhh... research OS hw & sw - except you *do not* want
to see the walnut source - it makes ppl want to crawl up and cry).

http://www.csse.monash.edu.au/~rdp/fetch/castro-thesis.ps

and check the Readme.txt at
http://www.csse.monash.edu.au/courseware/cse4333/rdp-ma terial/
for stuff on Multi and password-capabilities.

interesting stuff, the Castro thesis does do some comparisons to FreeBSD
(1.1 amazingly enough) - although the number of real world applications
on these systems is minimal (and in the current state impossible -
nobody can remember how to get userspace going on Walnut, we may have
broken it) and so real-world comparisons just don't really happen these
days. Maybe after a rewrite (removing some brain-damage of the original
design).

This is all related to my honors work,
http://www.flamingspork.com/honors/
although my site needs an update.
I'm working on the design and simulation of an improved storage system.


On Wed, 2003-09-10 at 03:30, Luca Veraldi wrote:
> Hi all.
> At the web page
> http://web.tiscali.it/lucavera/www/root/ecbm/index.htm
> You can find the results of my attempt in modifing the linux kernel sources
> to implement a new Inter Process Communication mechanism.
> 
> It is called ECBM for Efficient Capability-Based Messaging.
> 
> In the reading You can also find the comparison of ECBM 
> against some other commonly-used Linux IPC primitives 
> (such as read/write on pipes or SYS V tools).
> 
> The results are quite clear.
> 
> Enjoy.
> Luca Veraldi
> 
> 
> ----------------------------------------
> Luca Veraldi
> 
> Graduate Student of Computer Science
> at the University of Pisa
> 
> veraldi@cli.di.unipi.it
> luca.veraldi@katamail.com
> ICQ# 115368178
> ----------------------------------------
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