[Scilab-users] Is this a known bug?

[Tim Wescott]

I'm running scilab-5.5.0 on Ubuntu 14.04.

When I run the attached script and then run "graphalot" for a while,
Scilab's memory usage climbs monotonically.  What is actually getting
plotted doesn't seem to make a difference -- I just did the particular
plots seen there because it's fun.

I'm seeing this in a rather large, rather graphics-intensive script I'm
using.  If I let the thing go unattended too long then Scilab slows to a
crawl and takes my computer with it -- I suspect that if I were willing
to wait for geologically significant amounts of time I could stop
Scilab, but I usually end up just cringing and whining, then resetting
the computer.

(I'm not sure what would happen in Windows, or if there's a better way,
under Linux, to make it not drag the rest of the world down.  I just try
not to let the problem happen in the first place).

I searched the bugbase for it, but my ability to find good search terms
is usually far better in hindsight than actual use.  So -- is this a
known bug, or should I file a bug report?

If it's known, has it been fixed?  In what version?

Here's the script, in case file attachment doesn't work on the list:

function graphalot()
    for n = 1:10000; 
        bob = rand(1, 5000, "n"); 
        r = flts(bob, [%z^2 - 1; 0.5 * %z] / (%z^2 - 1.95*%z + 0.999)); 
        scf(0); 
        drawlater(); 
        clf; 
        plot2d(r'); 
        ssz = stacksize(); 
        xtitle(sprintf("iteration #%d, stack used %d", n, ssz(2))); 
        drawnow(); 
        scf(1); 
        clf; 
        drawlater(); 
        plot2d(r(1, :), r(2, :), frameflag = 3, rect = [-150, -150, 150,
150]); 
        drawnow(); 
    end
endfunction


-- 

Tim Wescott
www.wescottdesign.com
Control & Communications systems, circuit & software design.
Phone: 503.631.7815
Cell:  503.349.8432
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