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Thread: Some serious hardcore startup-time optimization of a Linux system

  1. #1
    Administrator dELTA's Avatar
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    Some serious hardcore startup-time optimization of a Linux system

    I guess some of you already saw this, but for the rest of you, it's a really good example of what some inventive low-level optimization (and the cutting-away of unnecessary parts of apps/executables) can do to a system's responsiveness.

    Reduction of combined boot-time and GUI application start-up to only 1 second!

    Video:
    http://www.embedded-bits.co.uk/2011/1-second-linux-boot-to-qt/

    Slides with details:
    http://www.slideshare.net/andrewmurraympc/elce-the
    "Give a man a quote from the FAQ, and he'll ignore it. Print the FAQ, shove it up his ass, kick him in the balls, DDoS his ass and kick/ban him, and the point usually gets through eventually."

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    Reduction of combined boot-time and GUI application start-up to only 1 second!
    then that is exactly GUI application start-up, but not a SYSTEM start-up.

  3. #3
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    The camera is a device run by the hardware,its not solely a GUI boot, its just a boot with all the other trimmings removed.
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    Administrator dELTA's Avatar
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    I'm not completely sure what any of you mean, but it is a (downstripped) Linux system, booting from scratch (including having its power cord pulled) and then also starting a GUI application, all in one second.

    Which part of that is hard to understand?
    "Give a man a quote from the FAQ, and he'll ignore it. Print the FAQ, shove it up his ass, kick him in the balls, DDoS his ass and kick/ban him, and the point usually gets through eventually."

  5. #5
    I have a friend that showed me a very short boot time (reaching login screen) on Kubuntu. Part of the trick was that he used a solid-state disk.
    Obviously it's unlikely that there is a hard drive on that renesas board so I was wondering if not that OS is booted from a flash? that could maybe play a role....

  6. #6
    Administrator dELTA's Avatar
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    Sure, but before their optimization, the boot-time from the same flash was > 19 seconds, and afterwards it was 0.77 seconds, so it seems that their other optimizations played the key role there. (all details are in the slides linked above)
    "Give a man a quote from the FAQ, and he'll ignore it. Print the FAQ, shove it up his ass, kick him in the balls, DDoS his ass and kick/ban him, and the point usually gets through eventually."

  7. #7
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    sorry, my replay was itself "extraoptimized".
    i meant following: that 'trunked-OS' is capable to DO-ONLY that one GuiApp.
    nothing more big it can do..

  8. #8
    That's brilliant indeed.
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