[Xastir] [Bug 454740] Re: xastir consumes CPU time in X11 socket I/O

[Curt, WE7U]

On Tue, 5 Jan 2010, David Aitcheson wrote:

> I have to wonder if the CPU activity level is dependent on the package
> version and/or the number of libraries called and/or cascade called and how
> the hardware handles those calls.

Library versions possible but less likely.  Hardware versions
perhaps slightly more possible.


> Then there is the issue of some of the on board graphics chips being
> somewhat dependent on the main CPU for some processing as they were designed
> to be in the "Macrohard" environment.  This "GPU" load could be the source
> of the perceived excess load on the CPU, maybe?

I have one such machine at home with shared memory for it's GPU.  I
might have to try the same test on it with a full Firenet.us feed to
see if the CPU load is a bit more.  Plus turn on all display info
for stations and turn on tracks and such.

BTW:  In the INSTALL file distributed with Xastir, near the end, are
instructions for running Xastir under "gprof" to see where the code
spends its time.  I've run the code under it periodically to knock
down the winners.


> I'll have to see how my cpu use tracks.  The system is only partially set up
> at this point and only Internet connected.  A GPS and TNC/Radio have yet to
> be added.  I am waiting to see if someone attempts to sabotage things here
> again now that I have the APRS beacon online.

Sabotage via RF or over the internet?  Firewalls protect me on the
internet side.  Xastir has so far been bulletproof on the RF side.
I'm in a high-activity APRS RF area too.

-- 
Curt, WE7U.                         <http://www.eskimo.com/~archer>
    APRS:  Where it's at!                    <http://www.xastir.org>
   Lotto:  A tax on people who are bad at math. - unknown
Windows:  Microsoft's tax on computer illiterates. - WE7U.
The world DOES revolve around me:  I picked the coordinate system!"