Wireshark · Wireshark-dev: Re: [Wireshark-dev] qtshark startup time ~1 minute just printing messages

[Gerald Combs <gerald@xxxxxxxxxxxxx>]

On 9/9/13 5:47 PM, Evan Huus wrote:
> On Mon, Sep 9, 2013 at 6:48 PM, Gerald Combs <gerald@xxxxxxxxxxxxx
> <mailto:gerald@xxxxxxxxxxxxx>> wrote:
> 
>     On 9/9/13 3:18 PM, Joerg Mayer wrote:
>     > On Mon, Sep 09, 2013 at 05:38:27PM -0400, Evan Huus wrote:
>     >> This is actually quite reproducible (on my machine at least). If
>     I maximize
>     >> the qtshark window immediately upon startup then the splash seems
>     to do a
>     >> full-window redraw for every change, and takes a significantly
>     >> longer-than-usual amount of time to finish.
>     >
>     > Ah, that explains that last time I got annoyed by this it was more
>     like
>     > 1,75 minutes. The window was larger.
> 
>     What happens if you disable antialiasing in the overlay or set its
>     opacity to 1.0? I can't duplicate this (to any appreciable level, at
>     least) on any of my test machines.
> 
> 
> No change - the splash is marginally faster in general, but it still
> slows down substantially when the window size is changed. I suspect it's
> some condition that is accidentally disabling the "Only update every
> splash_register_freq milliseconds" check, I will try and debug further.

It sounds like it might be the QGraphicsBlurEffect in main_welcome.cpp.
I was hoping that setting the opacity in the overlay to 1.0 would keep
the effect from being applied but apparently that's not the case.