Re: text widget performance

[Marcelo Leitner <mrl netbank com br>]

On Thu, May 16, 2002 at 01:39:30PM +0200, Francois Chenais wrote:
> Hello, 
>
>       I'm build a GTK-- GUI for a log server. 
>       I uses Gtk::Text widget to print logs that come from the server.
>
>
>       Basic solution
>       ----------------------------------------------------------------------
>       In my main program, I set a callback to read new datas received 
>       on my socket :
>
>               gdk_input_add (sock, GDK_INPUT_READ, netInputCallback, data);
>
>       and the netInputCallback does 
>
>               text->insert(dataRed)
>       
>
>       But I have a lake of performance when I receive many logs.
>
>
>       (not) Improved solution
>       ----------------------------------------------------------------------
>       To improve the performances, I canged netInputCallback introducing
>       a buffer and a timer.
>
>       netInputCallback does
>
>               _buffer+=datared
>
>       I create a timer like this
>
>               SigC::Slot0<gint> my_slot = bind(slot(this, flushText), 0);
>               _connection = Gtk::Main::timeout.connect(my_slot, 500);
>
>       where flushText does
>
>               text->insert(_buffer)
>               _buffer=""
>
>       But it doesn't improve anything, the GUI is frozen while receiving datas :-|
>
>
>       Is there any GTK's way to do this ?
>
>
>               Thanks a lot
>
>               François                
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---end quoted text---

Hi,

500ms is very low due to high-traffic..
you can either increase this to, maybe, 1000ms, or gtk_idle_add_priority()
and set the socket to non-blocking or use select()..
then gtk will only call your callback when it's idle.. don't forget to give
the lowest priority to the socket..
I liked more the second one.. :)

[]'s
-- 
Marcelo R Leitner <mrl netbank com br>