From octave-maintainers-request at bevo dot che dot wisc dot edu Mon Nov 10 10:06:21 2003
Subject: Re: Shared memory interface to Octave
From: N Smethurst <nick dot smethurst at free dot fr>
To: <octave-maintainers at bevo dot che dot wisc dot edu>, <jswensen@intergate.com>
Date: Mon, 10 Nov 2003 17:08:21 +0100

Hi John

I've been using sockets in my application (kvisualiser.free.fr). I've found it 
generally takes only about 10-15ms to base64 encode in XML, transfer, and 
then decode a 150x150 point polydata surface (703KB including base64 
encoding). Admitedly this is on an Athlon 1400. However, the amount of data 
for a GUI would generally be far less than this, so I would imagine that the 
resulting time lag would be negligible.

Out of interest, what kind of application are you aiming to write? I was 
invisaging starting at some point a front end to Octave as a companion to 
KVisualiser. If our ideas were similar, perhaps there could be a 
collaboration.

Nick

Le Lundi 10 Novembre 2003 16:55,  a écrit :
> It indicates that transfering 256KB via named pipes would take ~32 ms while
> only ~256 microseconds with the shared memory.
> It should be noted that the document is somewhat old and was tested on
> Linux kernel 1.2.9 on a 90 MHz machine.  It would be expected to be much,
> much faster on modern day 1GHz and above machines.