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Thread: If You're Lucky, Ubuntu 12.04 LTS Can Boot Faster

  1. #1
    Join Date
    Jan 2007
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    13,456

    Default If You're Lucky, Ubuntu 12.04 LTS Can Boot Faster

    Phoronix: If You're Lucky, Ubuntu 12.04 LTS Can Boot Faster

    Ubuntu 12.04 LTS "Precise Pangolin" can boot faster... sometimes. If you are not lucky, Ubuntu 12.04 LTS can boot more than twice as slow as Ubuntu 10.04, the previous LTS release. Here are boot performance results of Ubuntu 12.04 LTS running on six distinct notebooks and comparing the Bootchart results upon clean installations of Ubuntu Linux going back as far as six years from the days of the Ubuntu 6.06 LTS "Dapper Drake" release.

    http://www.phoronix.com/vr.php?view=17216

  2. #2
    Join Date
    Aug 2007
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    6,598

    Default

    Disable swap in /etc/fstab and you will get 5-6 boottime with ssd.

  3. #3
    Join Date
    Nov 2009
    Location
    Italy
    Posts
    872

    Default

    What's the problem with swap? It doesn't even use it during the boot...
    ## VGA ##
    AMD: X1950XTX, HD3870, HD5870
    Intel: GMA45, HD3000 (Core i5 2500K)

  4. #4
    Join Date
    Dec 2011
    Location
    UK
    Posts
    17

    Default

    It's not that it uses swap during the boot, the problem is that it has to initialize the swap which is what takes the extra time.

    The two biggest things to decrease your boot times would be to make swap much smaller, e.g. 256 MB's (or just get rid of it altogether, I myself have noticed no problems removing it) and build all the modules you need into your kernel so you do not need the "initrd" part of booting. With these steps you could cut your boot in half sometimes.

    like here...


  5. #5
    Join Date
    Feb 2008
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    Linuxland
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    4,743

    Default

    Are you saying that

    a) U is stupid and runs mkswap every boot
    or
    b) swapon on a SSD is somehow really slow?

  6. #6
    Join Date
    Dec 2011
    Location
    UK
    Posts
    17

    Default

    curaga

    Are you saying that

    a) U is stupid and runs mkswap every boot
    or
    b) swapon on a SSD is somehow really slow?
    I honestly have no idea except that Micheal could do some benchmarks and post whatever results he finds

  7. #7
    Join Date
    Mar 2012
    Posts
    240

    Default Systemd?

    SystemD is the way to go for a faster boot

  8. #8
    Join Date
    Apr 2012
    Location
    Germany
    Posts
    205

    Default

    Not to boot is the fastest way to boot. Suspend works just fine here, having the system up and running in the previous state in less than 2 seconds.
    Seriously, who cares about boot times? How often do you boot that it really matters?

  9. #9

    Default

    Quote Originally Posted by TobiSGD View Post
    Seriously, who cares about boot times? How often do you boot that it really matters?
    Every time there is a critical security update to the Kernel or glibc, which seems to happen at least once a month.

    -= Stefan

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