Results 1 to 4 of 4

Thread: Qt performance

  1. #1
    Join Date
    Dec 2007
    Location
    London
    Posts
    206
    Thanks
    40
    Qt products
    Qt4 Qt5 Qt/Embedded
    Platforms
    Unix/X11 Windows Android

    Question Qt performance

    Hello,
    I've written a simple application for test purposes;but i've faced with a strange situation:

    First; I've installed Qt from opensuse 10.3 dvd (qt 4.3.1), I've compiled my simple application. The result is fine...

    Secondly; I've downloaded Qt 4.3.1 sources from trolltech's ftp site, i've compiled it(with default options); and then i've compiled the above application with that qt(the one compiled by myself).
    The result is a mess....The application works at one tenth speed of the previous one...

    And worst of all, I have to use the second method because of some technical reasons.
    I am attaching my small application....

    Does anybody have an idea about that situation; may it be a configuration related issue(if it is, what?).

    Thanks in advance for your replies...
    Attached Files Attached Files

  2. #2
    Join Date
    Dec 2006
    Posts
    849
    Thanks
    6
    Thanked 163 Times in 151 Posts
    Qt products
    Qt4
    Platforms
    Unix/X11

    Default Re: Qt performance

    * how did you configure your Qt?
    * did you check a release build (both times)?

  3. #3
    Join Date
    Dec 2007
    Location
    London
    Posts
    206
    Thanks
    40
    Qt products
    Qt4 Qt5 Qt/Embedded
    Platforms
    Unix/X11 Windows Android

    Default Re: Qt performance

    For opensuse dvd, I had no choice of configuring Qt (I ve installed it from yast)

    For the other one(compiled by me), I used default options(just used ./configure)

  4. #4
    Join Date
    Jan 2006
    Location
    Warsaw, Poland
    Posts
    5,372
    Thanks
    28
    Thanked 976 Times in 912 Posts
    Qt products
    Qt3 Qt4
    Platforms
    Unix/X11 Windows

    Default Re: Qt performance

    The slowdown might be caused by the timer with 1 ms interval.

Similar Threads

  1. Tabbed widget performance suggestions
    By MrGarbage in forum Qt Programming
    Replies: 0
    Last Post: 8th December 2007, 16:02
  2. GraphicsView performance problems
    By Gopala Krishna in forum Qt Programming
    Replies: 79
    Last Post: 8th August 2007, 17:32
  3. Replies: 1
    Last Post: 4th October 2006, 16:05
  4. Increasing performance from Qtextedit, listview, etc?
    By taylor34 in forum Qt Programming
    Replies: 1
    Last Post: 16th February 2006, 10:20

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide.