[Spice-devel] UPDATE: spice-gtk on MAC OSX

[Mario]

Hi,

I just took a look into those functions that are not seem to be involved 
in performance issues. Until today I stopped at the 
gdk_window_update_idle() as this call is suggestive of being innocent. I 
thought it may sleep.

However this calling thread seem to create the performance issue on OSX.

Attached you´ll find the time analysis of the spicy client (as png as 
text exports of this software are not really clear).

Deep inside the gdk_window_update_idle() the drawing function 
spicex_draw_event() is called that actually consumes 65% of the whole 
execution time.

Inside cairo_fill() the CGContextDrawImage() is called for the quartz 
backend and this seem to be the root of all evil. ;-)

Is there any other approach to display the spice-widget content to the 
screen?


Thanks in advance,
Mario

Am 07.10.2013 11:55, schrieb Mario Lombardo:
Hi,
I just compiled the spice-gtk client (spicy) on OSX
(http://www.spice-space.org/page/OSX_Client/Build).
I am able to connect to the spice server using this client but it is
more slow than any VNC client I know.
I looked into the code and found two different places where this
client seems to be different than the x11 or GDI versions:
1.) It uses sw_canvas.c
2.) It uses spice-widget-cairo.c
Is it possible that the slow rendering results in the execution time
one of those two files? Which investigation would make more sense:
Would it be better to provide a SDL cairo version or should it
accelerate the client when there is a canvas option optimized for OSX
(quarz I guess)? Is it possible to test the gl canvas on OSX? I didn´t
found anything about the gl implementation in the configure script.
Thank you.
Mario
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