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Ubuntu Unity Proves Very Slow To KDE, GNOME, Xfce, LXDE

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  • molecule-eye
    replied
    Unity's no good

    Interesting results, especially KWin fullscreen compositing vs fullscreen suspended. Compare this with the Phoronix results published earlier showing that with the Catalyst drivers give the same performance, fullscreen compositing enabled or not. What does this say about the Catalyst and Intel drivers? I guess performance should be the same whether or not compositing is enabled, non?

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  • bug77
    replied
    Originally posted by marek View Post
    Normally, a window writes into an offscreen framebuffer of the size of the window, which is later copied onto the screen at the position of the window. If the compositor can properly detect a fullscreen window, it can skip the copying and render to the screen directly. It's only the copying that makes the difference.
    Ok, that somewhat resembles double buffering (except that this time it's per window). But if the WM only has to draw one "window" and then copy it to screen, is that enough to explain the rather sizeable gap in Michael's graphs?

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  • LinuxAffenMann
    replied
    "Ubuntu Unity Proves Very Slow To KDE, GNOME, Xfce, LXDE" - in games and synthetic benchmarks, OH NOES!

    #[email protected]

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  • mrugiero
    replied
    Originally posted by ruinairas View Post
    As much as I don't want to believe it. Unity is by far slower than Windows. It also takes forever to boot. There seems to be something hanging between login and logout that takes about 60 seconds to get passed it. The unity panel itself lags when scrolling up and down the menus and the dash menu has a big delay when opening. It feels like Windows 7 when you got infected with a bunch of malware 0_o
    Ubuntu and Unity aren't the same thing.

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  • ruinairas
    replied
    Unity on AMD FX 4100 feels sluggish compared to even Windows.

    As much as I don't want to believe it. Unity is by far slower than Windows. It also takes forever to boot. There seems to be something hanging between login and logout that takes about 60 seconds to get passed it. The unity panel itself lags when scrolling up and down the menus and the dash menu has a big delay when opening. It feels like Windows 7 when you got infected with a bunch of malware 0_o

    Leave a comment:


  • Teho
    replied
    Originally posted by mrugiero View Post
    Well, then, that's what the guy (and I) wanted to know. Do you happen to know how is it done?
    Nope. I guess you could ask "mgraesslin" who is the lead developer of KWin and made a post in the "KDE's KWin To Receive Performance Improvements" topic.

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  • johnc
    replied
    I love the screencap of the new Ubuntu login session scrolling right off the screen. I'm serious when I say: I don't think they test this stuff.

    So can we conclude that Cinnamon would be similar to GNOME Shell in terms of performance?

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  • mrugiero
    replied
    Originally posted by Teho View Post
    That's not how it works. Only the full screen window and windows beneath it lose the composition and it doesn't seem to affect the other screen at all. I'm doing that all the time because the only way I can get tear free video on my external monior is by using MPlayer without compositing with VDPAU output . I'm not sure how it affects performance though.
    Well, then, that's what the guy (and I) wanted to know. Do you happen to know how is it done?

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  • Teho
    replied
    Originally posted by mrugiero View Post
    If you use dual head, use a fullscreen window in one screen. Then, if you choose to suspend effects when fullscreen, you have the other head without visual effects as well, giving you a less appealing desktop. If you choose to not suspend, well, you get the Unity-like performance in the fullscreen app. Beats me what should happen if using two fullscreen apps, one in each screen.
    That's not how it works. Only the full screen window and windows beneath it lose the composition and it doesn't seem to affect the other screen at all. I'm doing that all the time because the only way I can get tear free video on my external monior is by using MPlayer without compositing with VDPAU output . I'm not sure how it affects performance though.
    Last edited by Teho; 09-07-2012, 02:21 PM.

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  • kraftman
    replied
    Originally posted by Kakarott View Post
    Wasn't L4D2 faster on Ubuntu than on Windows?
    Didn't that Ubuntu use Unity? [http://blogs.valvesoftware.com/linux.../#comment-4328]

    Just imagine a "KDE SC 4.9 - Suspended" ? so much more frames per second ?
    Exactly. I'd love to see benchmarks with KDE compared to OS X and Windows.

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