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Thread: TIP: Improve bootup speed by reprofiling bootup

  1. #101
    Join Date
    Jun 2007
    Location
    North London; England
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    697
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: TIP: Improve bootup speed by reprofiling bootup

    wow that works extremely well. thank you

    boot time before was 50 seconds

    now my boot time is about 35 secs, so that cut about 15 sec off

    I still would like it to be faster,(fink DCHP on my network slows it down a bit)

    anyone know any other way to speed up boot time?
    Last edited by markp1989; September 7th, 2007 at 02:26 AM.

  2. #102
    Join Date
    Dec 2004
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    hacking on my Debian box
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    1,305

    Re: TIP: Improve bootup speed by reprofiling bootup

    You've seen this baby titled " HowTo: Speed up ubuntu boot process - the way you can feel it.", right?
    http://ubuntuforums.org/showthread.php?t=89491

  3. #103
    Join Date
    Apr 2005
    Location
    germany
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    166

    Re: TIP: Improve bootup speed by reprofiling bootup

    Great using this I gained additional 5 seconds to my boot time I guess there is no way to restore the old profile? How can this be anyways??
    (Using Gutsy on an Dell Inspiron 9400 laptop)

  4. #104
    Join Date
    Jan 2006
    Location
    Vancouver, Canada
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: TIP: Improve bootup speed by reprofiling bootup

    Gutsy no longer seems to run readahead in the background, by the way. (So the bonus hack is just for previous versions).

  5. #105
    Join Date
    Oct 2004
    Location
    Cupertino, CA
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    5,092
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: TIP: Improve bootup speed by reprofiling bootup

    Right, it was that way in Feisty too --- immediately after pointing this out to Scott James Remnant he made the change in Ubuntu to do readahead in the foreground by default.
    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. #106
    Join Date
    Dec 2006
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    Hidden!

    Re: TIP: Improve bootup speed by reprofiling bootup

    Yes it's working...thanks for the tip...
    I am a superhero...on a break.
    Registered Linux user #438570

  7. #107
    Join Date
    Jun 2007
    Location
    Bombay,India
    Beans
    1,579
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: TIP: Improve bootup speed by reprofiling bootup

    10 seconds less from Grub to Working Desktop.Thanks man!Though it's still a huge 50 secs... Shouldn't a 512 MB RAM make booting faster?

  8. #108
    Join Date
    Dec 2005
    Location
    Kingston, Ontario
    Beans
    1,917
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: TIP: Improve bootup speed by reprofiling bootup

    Shaved about 3 seconds off my boot time, so I'm down to 18 seconds. Better than I thought I'd get, but I'm looking for more.

  9. #109
    Join Date
    Feb 2006
    Beans
    11

    Re: TIP: Improve bootup speed by reprofiling bootup

    Bootchart went from 27 to 40 with readahead enabled :-/

    It seems it's set to run in the foreground, which as jdong said Scott James Remnant has made the default. Setting readahead to run in the background brings it down to 37.

    Caveats:
    I'm using bootchart to get these results. Bootchart seems to quit once KDM starts. If readahead is reading in stuff used by KDM and thereby speeding up KDM, that speedup would appear not to be recorded by bootchart. Further testing seems to show this to be the case. Readahead's seems to speed up x start->kdm login and that is missed by bootchart. Stopwatching it to usable desktop I get 1 second slower with readahead. So readahead continues to have benefits after KDM starts, and bootchart misses them, but in my case they aren't enough to offset the slowdown prior to KDM.

    At any rate, for me it is faster with readahead in the background than in the foreground. As I said before, it gets to KDM 3 seconds faster with it in the background, and by that time it is in fact done running, so that's 3 seconds saved, though I save more by not having readahead enabled in the first place (barely).
    Last edited by MamiyaOtaru; February 14th, 2008 at 11:18 PM.

  10. #110
    Join Date
    Dec 2006
    Location
    Lincolnshire
    Beans
    224
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: TIP: Improve bootup speed by reprofiling bootup

    On my Gutsy 64bit it made no difference, it still sits at around 32 seconds from grub to login screen.

    On Hardy Herald using same PC there was an improvement of about 10 seconds but still slower to boot than Gutsy.

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