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Hey all I'm interested in customizing a OS ( linux based ) that finish booting after only one second have any ideas where to start ?...
  1. 07-22-2010 #1
    RLg
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    One Second Linux

    Hey all I'm interested in customizing a OS ( linux based ) that finish booting after only one second have any ideas where to start ?
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  2. 07-22-2010 #2
    oz
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    I don't know that you will ever accomplish your goal, but Linux From Scratch might be a good place to start since it will teach you all about the inner workings of Linux and it should give you a good understanding of exactly what you can eliminate, or enhance to possibly achieve your objective.
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  3. 07-22-2010 #3
    elija
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    That's ambitious!

    This is the fastest booting OS out there (on a standard desktop). When Linux Format reviewed it quite a while ago, it booted to a graphical desktop in about 3 seconds.

    It is pure assembler, so I doubt that a compiled C program will match it.
    If we hit that bullseye, the rest of the dominoes will fall like a house of cards. Checkmate! (Zapp Brannigan)


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  4. 07-23-2010 #4
    Rubberman
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    I run Debian Etch (2.6.21 kernel) on an ARM9 processor and it boots in under 1.5 seconds - 4 seconds if I also mount an external NFS volume and set the real-time clock with ntpd from an external internet time source, such as NIST.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!
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  5. 07-23-2010 #5
    Rubberman
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    FWIW, that is booting off of an SD card.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!
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  6. 07-23-2010 #6
    JohnGraham
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    Quote Originally Posted by Rubberman View Post
    I run Debian Etch (2.6.21 kernel) on an ARM9 processor and it boots in under 1.5 seconds - 4 seconds if I also mount an external NFS volume and set the real-time clock with ntpd from an external internet time source, such as NIST.


    How on earth is this possible? What do you have to do to Debian to get it booting in 1.5 seconds? I'd be very, very interested to know!
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  7. 07-23-2010 #7
    Rubberman
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    That's a minimal boot that doesn't start a lot of the services that would normally be running - remember that this is for an embedded system. Anyway, it's for boards I get from Technologic Systems PC/104 Single Board Computers and Peripherals. They provide a pretty complete set of tools. If you want, you can configure your system to boot the complete system, including X11, though that takes a few seconds longer. You can download the complete cross-compiling tool chain, kernel sources, etc. from their site. Naturally their kernel includes drivers for their hardware, but you can run the kernel configuration tools as you would normally and remove any unnecessary cruft for your situation.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!
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  8. 07-23-2010 #8
    elija
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    Quote Originally Posted by Rubberman View Post
    FWIW, that is booting off of an SD card.
    Yikes! That's quick but I bet it doesn't fit on a floppy disk or look like ....

    If we hit that bullseye, the rest of the dominoes will fall like a house of cards. Checkmate! (Zapp Brannigan)


    My new blog. It's probably not as good as I think it is.
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