[Qt-interest] Qt3 vs Qt4 performance on remote X11 display

Arnold Krille arnold at arnoldarts.de
Thu Mar 19 13:22:59 CET 2009


On Thursday 19 March 2009 10:53:45 Dmitry Nezhevenko wrote:
> I've tried to launch simple Qt4 application on remote X11 display. The
> application performance is VERY bad. It takes ~4 seconds to just repaint
> focused widget.
> Qt3 performance is not so fast too however if I compare "qtconfig" tools
> from both Qt3 and Qt4, Qt3 version works much faster. Qt3 performance is
> almost same as "Tcl/Tk". Qt4 is unusable at all. Even M$ windows
> applications works faster (using wine).
> Any ideas? Maybe some workaround.

Are you talking X11-over-ssh when you say remote X display?

Because I found that both over ssh and over vnc (tunneled through ssh or 
openvpn) all X apps are the same speed. Regardless of the Qt-version...

Arnold
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