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Thread: TIP: Improve bootup speed by reprofiling bootup

  1. #91
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    Aug 2005
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    USA
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    Kubuntu 10.10 Maverick Meerkat

    Re: TIP: Improve bootup speed by reprofiling bootup

    it looks like this hack already made its way into feisty

  2. #92
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    Ubuntu 14.04 Trusty Tahr

    Re: TIP: Improve bootup speed by reprofiling bootup

    i did remove quiet and splash from the second line which starts with kernel but it keeps on adding the next time i reboot.
    the time taken for booting with splash is 03.20 minutes
    without splash it takes just 00.40 minutes
    what should i do so the change i made is saved at every boot up
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  3. #93
    Join Date
    Feb 2005
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    425

    Re: TIP: Improve bootup speed by reprofiling bootup

    Quote Originally Posted by rahul_bhise View Post
    i did remove quiet and splash from the second line which starts with kernel but it keeps on adding the next time i reboot.
    the time taken for booting with splash is 03.20 minutes
    without splash it takes just 00.40 minutes
    what should i do so the change i made is saved at every boot up
    The kernel lines are auto-generated (see the explanation text inside menu.lst). You have to modify the #defoptions= line in /boot/grub/menu.lst to make permanent changes.
    Please use launchpad to search for/report bugs and problems: https://help.ubuntu.com/community/ReportingBugs

  4. #94
    Join Date
    Feb 2005
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    Re: TIP: Improve bootup speed by reprofiling bootup

    Quote Originally Posted by rahul_bhise View Post
    the time taken for booting with splash is 03.20 minutes
    without splash it takes just 00.40 minutes
    From looking at the graphs it seems there's a problem with usplash spending a lot of CPU. Please file a bug against usplash and attach the two graphs there.
    Please use launchpad to search for/report bugs and problems: https://help.ubuntu.com/community/ReportingBugs

  5. #95
    Join Date
    Oct 2004
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    Cupertino, CA
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    5,092
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    Ubuntu 10.04 Lucid Lynx

    Re: TIP: Improve bootup speed by reprofiling bootup

    Quote Originally Posted by tormod View Post
    From looking at the graphs it seems there's a problem with usplash spending a lot of CPU. Please file a bug against usplash and attach the two graphs there.

    Yep, you're correct -- this is clearly some sort of bug with usplash that eats CPU.
    Quote Originally Posted by tuxradar
    Linux's audio architecture is more like the layers of the Earth's crust than the network model, with lower levels occasionally erupting on to the surface, causing confusion and distress, and upper layers moving to displace the underlying technology that was originally hidden

  6. #96
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    Ubuntu 14.04 Trusty Tahr

    Re: TIP: Improve bootup speed by reprofiling bootup

    where should i file for a bug report for usplash
    You have to modify the #defoptions= line in /boot/grub/menu.lst to make permanent changes.
    thanks i edited the menu.lst and no problems now
    Last edited by rahul_bhise; July 23rd, 2007 at 06:03 PM.

  7. #97
    Join Date
    May 2007
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    75

    Re: TIP: Improve bootup speed by reprofiling bootup

    Thanks! my system boots considerably faster now..
    i didn't need to do the additional 'hack' lol, mine didn't have --background listed.. spooky haha

  8. #98
    Join Date
    Jan 2007
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    United States, VA
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    Ubuntu 8.04 Hardy Heron

    Re: TIP: Improve bootup speed by reprofiling bootup

    Thanks. It improved times slightly. It was reduced from 26 seconds to 24 seconds.

    Not bad, eh?

    Also, will disabling readahead in bootup processes affect the profiling?

  9. #99
    Join Date
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    Sunny Bribane in Aus
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    Hardy Heron (Ubuntu Development)

    Re: TIP: Improve bootup speed by reprofiling bootup

    I went through the services that start by default in feisty and got some improvement but when I reprofiled the boot readahead file that's when I got a significant decrease in boot times. 35 sec from grub to login with splash. Best thread I've found to decrease the boot time!
    On another note, there is, in /etc/readahead/, a desktop file that is outdated for my setup - how do I reprofile that?

  10. #100
    Join Date
    Oct 2004
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    Ubuntu 10.04 Lucid Lynx

    Re: TIP: Improve bootup speed by reprofiling bootup

    The desktop file is not used in standard Ubuntu systems; but rather it is a LTSP (i.e. Edubuntu) specific file so that readahead at boot doesn't use a slow network link and delay total boot time.
    Quote Originally Posted by tuxradar
    Linux's audio architecture is more like the layers of the Earth's crust than the network model, with lower levels occasionally erupting on to the surface, causing confusion and distress, and upper layers moving to displace the underlying technology that was originally hidden

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