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I can say my KDE startup time is significantly shorter. I'm not sure if that is due to system specs or not. But my entire boot time, grub to the session restoring all my apps is 10 seconds or so.
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Can someone try disabling just one of Powerdevil and the Device automounter and see which of the two causes the greatest slowdown please?
According to the Powerdevil developer, it attempts to initialise as little as possible and delay it for later - so it shouldn't have an impact on startup times.
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Since nobody else seems willing to test this...
It's both of them. With one or the other running, KDE startup takes 20 seconds. With neither, it takes 10. |
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Thanks for performing this testing. I will report this back to the Power Management developer. Which version of KDE did you test with?
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Tested with both 4.5.5 (Salix (Slackware) 13.37) and 4.7.2 (Fedora 16). Sorry for the late response.
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I'll talk to the developers of both about this discovery. Thanks for the information.
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Is there any progress made yet, or is there anything we can do to help the developers?
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Six months and a few releases later... No difference. Startup is still very slow - slower, in fact, in the more recent versions. I haven't verified that this is the same issue on later versions though, and I'm not sure I should bother; the sad truth seems to be that a full KDE 4 desktop is not suitable for low-spec computers - even fairly recent ones - and will still not be suitable for such computers no matter how much the user tweaks and fiddles around with it.
I think from now on I'm going to just use my KDE applications under a light window manager, with the sudo/pm-utils/shell script kludge for power management. Ugly, but it works. |
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Have you looked into viewtopic.php?f=66&t=101038&start=30 ? (Which shows an interesting trace of the cause...)
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Thank you... However
- KDE 4.5.5 does not have calendar events integration for the clock plasmoid - I'm using a Slackware derivative, so no Pulseaudio Edit: BTW I was able to save about 5-6 seconds by removing the system tray plasmoid; there seems to be an additional delay between the end the splash screen and full desktop usability while the system tray fills up. This makes logging in a little less annoying, but still doesn't solve the crux of the issue, which (IMO) is that the splash screen shouldn't be hanging around so long, especially after a cold boot. |
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That thread was referring to disabling Plasma from the startup procedure completely. Just as a test, could you try that please?
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Disabling Plasma actually works, bringing it down to ~9 seconds on my netbook.
BTW, I noticed something interesting... When Plasma is enabled, kbuildsycoca4 gets called 4 times. When Plasma is disabled, it gets called only once. I don't think that should make a difference unless one of those is with --noincremental though. |
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Interesting observation. Plasma should not be invoking kbuildsycoca4. The --noincremental option will not have much impact in terms of disk access.
Can you please try enabling all debug areas in "kdebugdialog", with plasma startup enabled, so it can be determined why exactly Plasma is triggering the invocation of kbuildsycoca4?
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Grr. It seems I cannot reproduce the multiple invocations of kbuildsycoca4. Currently I am only seeing one invocation.
Nevertheless, here is my fresh .xsession-errors file. Sorry about the Firefox stuff, I moved it but KDE kept appending stuff.
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Umm... Rats. Can anyone see the above post?
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