WebKit with Qt has EXTREMLY slow speed of scrolling on some sites. For example, at gmail.com with about 100 letters per page. Scrolling speed is like on P-II with 32 Mb of RAM. My PC is Sempron-2800, GeForce 7800GS, 2Gb DDR-II. Video drivers are installed from repository of KUbuntu Gutsy. Scrolling in Opera works 10 times faster on such sites. Please, fix it.
This is not descriptive enough and is not experienced by me nor have I heard of such reports from others who use QtWebKit daily.
Opera works fine, Firefox works fine, Konqueror works fine. Webkit doesn't. Don't know why it is not descriptive enough, the scrolling speed is simply slow. Very slow. I can grab video.
Same problem
What versions of QtWebKit are you guys using? Is this with recent Tip Of Tree or one of the released versions with Qt. And if one of the released versions with Qt please do tell is this with QtWebKit released with Qt4.4?
Any version is affected. I used all webkit versions from Qt 4.4 to 4.4.3, and many svn revisions (from 30000 or something to 40618). We are developing the internet browser for internal purposes based on webkit and the one of the worst things with it is a scrolling speed. Now my system is Debian Lenny on Athlon X2 5600 and it is still works very slow. If you want I can grab video with the latest svn trunk and other browsers, you should see THIS :)
You've mentioned this on gmail.com. Are there any other sites where you see this? If so, please list them.
*** Bug 24183 has been marked as a duplicate of this bug. ***
I'd also be interested in a video if you were serious.
Yes, some other sites are scrolled very slow too. I'll try to grab some videos tommorrow.
Many sites slow either very slow, or incredibly jerky for me. http://www.mysticwicks.com being one in particular. I'm using SuSE 11.1, QT4.5, Xorg 7.4, Intel video driver, and the KDE 4.3 (svn) Desktop. I'd try to do a video as well, though I'm not sure how.
(In reply to comment #10) > Many sites slow either very slow, or incredibly jerky for me. > http://www.mysticwicks.com being one in particular. > > I'm using SuSE 11.1, QT4.5, Xorg 7.4, Intel video driver, and the KDE 4.3 > (svn) Desktop. > > I'd try to do a video as well, though I'm not sure how. > Sorry, I meant many sites SCROLL either very slow..or.. Typo.
What depth is your x-server configured too? Question for both of you guys. Note: you can use xdpyinfo and xwininfo to tell.
screen #0: print screen: no dimensions: 1280x1024 pixels (365x292 millimeters) resolution: 89x89 dots per inch depths (7): 24, 1, 4, 8, 15, 16, 32 root window id: 0x87 depth of root window: 24 planes number of colormaps: minimum 1, maximum 1 default colormap: 0x20 default number of colormap cells: 256 preallocated pixels: black 0, white 16777215 options: backing-store NO, save-unders NO largest cursor: 64x64 current input event mask: 0xfac031 KeyPressMask EnterWindowMask LeaveWindowMask KeymapStateMask ExposureMask StructureNotifyMask SubstructureNotifyMask SubstructureRedirectMask FocusChangeMask PropertyChangeMask ColormapChangeMask number of visuals: 2 default visual id: 0x21 visual: visual id: 0x21 class: TrueColor depth: 24 planes available colormap entries: 256 per subfield red, green, blue masks: 0xff0000, 0xff00, 0xff significant bits in color specification: 8 bits visual: visual id: 0x22 class: DirectColor depth: 24 planes available colormap entries: 256 per subfield red, green, blue masks: 0xff0000, 0xff00, 0xff significant bits in color specification: 8 bits --- That is mine.
name of display: :0.0 version number: 11.0 vendor string: The X.Org Foundation vendor release number: 10402000 X.Org version: 1.4.2 maximum request size: 16777212 bytes motion buffer size: 256 bitmap unit, bit order, padding: 32, LSBFirst, 32 image byte order: LSBFirst number of supported pixmap formats: 7 supported pixmap formats: depth 1, bits_per_pixel 1, scanline_pad 32 depth 4, bits_per_pixel 8, scanline_pad 32 depth 8, bits_per_pixel 8, scanline_pad 32 depth 15, bits_per_pixel 16, scanline_pad 32 depth 16, bits_per_pixel 16, scanline_pad 32 depth 24, bits_per_pixel 32, scanline_pad 32 depth 32, bits_per_pixel 32, scanline_pad 32 keycode range: minimum 8, maximum 255 focus: window 0x1800021, revert to PointerRoot number of extensions: 35 BIG-REQUESTS Composite DAMAGE DOUBLE-BUFFER DPMS Extended-Visual-Information GLX MIT-SCREEN-SAVER MIT-SHM MIT-SUNDRY-NONSTANDARD NV-CONTROL NV-GLX RANDR RECORD RENDER SECURITY SHAPE SYNC TOG-CUP X-Resource XAccessControlExtension XC-APPGROUP XC-MISC XFIXES XFree86-Bigfont XFree86-DGA XFree86-Misc XFree86-VidModeExtension XINERAMA XINERAMA XInputExtension XKEYBOARD XTEST XVideo XVideo-MotionCompensation default screen number: 0 number of screens: 1 screen #0: dimensions: 1280x1024 pixels (342x271 millimeters) resolution: 95x96 dots per inch depths (7): 24, 1, 4, 8, 15, 16, 32 root window id: 0x1a6 depth of root window: 24 planes number of colormaps: minimum 1, maximum 1 default colormap: 0x20 default number of colormap cells: 256 preallocated pixels: black 0, white 16777215 options: backing-store NO, save-unders NO largest cursor: 64x64 current input event mask: 0xfa4031 KeyPressMask EnterWindowMask LeaveWindowMask KeymapStateMask StructureNotifyMask SubstructureNotifyMask SubstructureRedirectMask FocusChangeMask PropertyChangeMask ColormapChangeMask number of visuals: 120
*** Bug 29397 has been marked as a duplicate of this bug. ***
I have tried gmail and http://www.mysticwicks.com on Linux and both do fine when scrolling (with webkit trunk, Qt and Webkit in debug mode). I have also tried on the anomaly browser on the N900 and the scrolling speed is excellent (with Qt 4.6 and Webkit trunk, in release mode). With which browser do you have the problem? Does QtLauncher have the problem as well? Dmitry and joe, could you make a profile with valgrind and attach it to this bug? (or maybe use oprofile if the time is spend outside Qt).
Adam, do you mind if I close this bug? It has been here for a long time and it seems the reporter don't give any info to reproduce or a profile to see what the problem is.
Closed for lack of information and inability to reproduce.