[Development] QApplication startup is a lot slower in Qt5 than Qt4

Rutledge Shawn Shawn.Rutledge at digia.com
Mon Aug 12 09:55:34 CEST 2013

On 11 Aug 2013, at 6:40 AM, Jiergir Ogoerg wrote:

> Thanks, I compiled and installed from
> http://download.qt-project.org/snapshots/qt/5.1/5.1.1-rc1/backups/2013-08-10-96/single/
> did a reboot and tested again, I didn't notice any difference, I get about 190-220ms on Qt 5.1.1rc1 (while qt4 takes less than 100ms).
> I wonder if I picked the wrong source files or if the startup time is gonna further improve.

https://codereview.qt-project.org/#change,60247 should have made a difference, but was already merged to stable branch.

You can try this patch


More information about the Development mailing list