Re: HELP: cpu load graph plotting program

[Stefan Kost <ensonic hora-obscura de>]

Hi Kevin,

gtkextra (http://gtkextra.sourceforge.net/) has plotting widgets.

Stefan

> I am making a monitor program for the PC. My monitor program will grab 
> statistics about CPU and memory every 1 or 5 seconds. Then I want to 
> store this data so I have a history and hence be able to graph this out 
> in my GUI.
>
> I thought about using a plain text file to store my graph data and plot 
> it out. Plot it out manually or use gnuplot.
>
> I found this tool called RRDTool 
> (http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/). It's a database 
> to store time-series data. Then it will beautifully graph out your data. 
> However it's based on executing/running the program/script. Data is 
> input using it's own command-line script. And graph creation is done the 
> same way using another command-line script.
>
> Problem is, how can I get C/C++ to call or incorporate RRDTool 
> command-line program into my GUI? Is there any way in C/C++ to call 
> another program? I don't think there is. Plus I don't think RRDTool has 
> developer libraries (lib*.lib, etc) for C/C++ programmers to call into 
> their own programs.
>
> If anyone has any suggestions/advice as to easy ways to store simple 
> statistics (CPU & memory load), and graph them in a GUI like GTK+ 
> (http://www.gtk.org/) I'd be very grateful.
>
> Or does anyone know a 3rd party graph plotting library that plots to 
> GUIs like GTK/QT/SDL? Or even GTK graph, GTK plot widgets that I can 
> incorporate with GTK?
>
> Many thanks.
>
>
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