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QT Creator slow performance on ubuntu

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    A Former User
    wrote on last edited by
    #3

    Hmm, for me it is not the case now, but it is still my favourite. However the performance problem seems to happen when I press the enter key and it needs to create a new line: it would become very slugish when a file exceeds 500 lines of code (I don't have a lot of includes: common iostream, vector, string and map). Maybe it is the rendering that is bad and something is wrong with QT 4.7. Please note that I am using a very simple theme with no compositing and metacity.

    My system is:

    Intel Core2 Duo 2GHz, 2Gb RAM
    Nvidia 8400G 128M RAM and 260.19.06 driver.

    So can you please tell me how to make QT Creator usuable again ?

    Thanks

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      A Former User
      wrote on last edited by
      #4

      What version of Qt is that? If that's 4.7.0 try 4.7.1.

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        A Former User
        wrote on last edited by
        #5

        I'm using the Qt Creator on a Ubuntu virtual machine and it is not slow at all! I'm using the Qt SDK that means Qt 4.7.0 but the Qt Creator RC!

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          A Former User
          wrote on last edited by
          #6

          I am using QT 4.7; I have tried QT Creator 2.1 RC, seems to be a little better but not noticeably better!

          Are there any performance enhancement with QT 4.7.1 ?

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            A Former User
            wrote on last edited by
            #7

            I have used Qt creator on ubuntu 9 and did not notice any problems.

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              A Former User
              wrote on last edited by
              #8

              farakon: Please update to Qt 4.7.1. There are known performance issues with Qt 4.7 (see the release notes).

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                A Former User
                wrote on last edited by
                #9

                To those having the same problem, I restart QT creator with:

                qtcreator -graphicssystem raster

                QT creator becomes as responsive as it was before. So hope it helps.

                I wonder why the raster is faster than the native system, I have read the blog, so the question why not make it by default ?

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                  A Former User
                  wrote on last edited by
                  #10

                  Thanks @farakon, it's just that i needed. QtCreator was very slow when i moved the cursor with the keyboard, it leave a "shadow". Now it run fine.

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                  • D Offline
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                    dimix
                    wrote on last edited by
                    #11

                    Thanks @farakon as well. I was having the same problem (text cursor not very responsive) and it was solved with the -graphicssystem raster switch.

                    http://physion.net

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                      TobbY
                      wrote on last edited by
                      #12

                      i am also using qt on ubuntu 10.10 , it works complitely fine on my laptop.

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