Checbox-touch hangs after running the package resource job on desktop

Once greyed out, trying to close the app returns:

qmlscene: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.

On desktop systems the package resource job can output data for more than 2500 packages (1000 for ubuntu-touch on my N7).
it makes a huge difference as pytherside send async event to the command output handler which updates the textarea of the command output page even if not visible for every line received.

The bottleneck is not the string concat but access to the textarea.text property for each event.

A solution could be a buffered string property and textarea updates based on a qml timer, the buffer being updated by the event handler for each line.

Note that ECMAscript to not fix a maximum size for string var, so it all depends on possible QML limitations or memory

Hmm, do we send the delta (the new event) or just the whole load of text each time. If we send (and compute each time) the full text then this is simply a quadratic problem hidden beneath the layers.

Your fix will hide the problem a little but not fix it. Please work with Maciek to ensure we're using the delta interface there (essentially tie to on_chunk/on_line and this will be okay and should scale to any size without having to compute the buffer text periodically.

We react on the on_line signal IIRC, so only the delta (or the line) is sent by pyotherside.send().
But every 300ms, the whole textarea is is updated indeed.