[Gnuplot-info] Fwd: Memory overload in real time plotting

[Ethan M. <eam...@gm...>]

Please clarify.  Is the memory growth happening in gnuplot or in the
program at the other end of the pipe?   If the latter, I don't see how we
could make a guess at the problem without seeing your code.

I just had a very quick look at the code in gnuplot_1-2.11 from the URL you
mentioned.  It looks like the library itself allocates new memory on every
call to gnuplot_init() and frees it in gnuplot_close().   Are your calls to
these routines correctly paired?


On Wed, Oct 30, 2013 at 9:20 AM, tryfonaration
<far...@gm...>wrote:

> Hello,
>
> I am using a simple C library from here http://ndevilla.free.fr/gnuplot/to
> plot real-time data with gnuplot. It basically opens a pipe to gnuplot and
> you can feed it with data and commands. I want to plot an image that
> changes
> periodically. I make the following command string "plot '-' matrix with
> image", then concatenate a big chunk of data and then pipe it to gnuplot.
> This is done every a few seconds. What happens is that my program occupies
> more and more memory every time a new command is issued and eventually the
> OS kills it.
> Any idea why this could be happening?
>
>