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Thread: Qt performance

  1. #1
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    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
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    Default Re: Qt performance

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

  3. #3
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    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
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    Default Re: Qt performance

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

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