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Thread: Best option for booting?

  1. #11
    Variable Bitrate 12Vsystems's Avatar
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    You can also activate your computer with your alarm remote. In that way, the computer starts to boot when you unlock the car. It takes I would say 5 to 10 seconds to get in the car, and start it, so then boot times will be like 20 seconds.
    This is a killer idea, instead of pulling your hair out trying to tweak every little setting just give the computer a 10-20 second head start.

    Now to review my alarm schematic to work out where to add my ACC line from the comptuer.
    Spent all my money on carputers now I have to work a real job.
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  2. #12
    FLAC aoLhaTer's Avatar
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    Normal hibernation has always worked well for me
    Only a 10-15 second resume

    Remember when doing hibernate, your amount of memory and its speed (as well as hard drive speed) will determine how fast you can resume. Less memory the better
    I have 256

  3. #13
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    thats good. the pc i'm ripping apart for this only has 128

  4. #14
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    Quote Originally Posted by aoLhaTer
    Normal hibernation has always worked well for me
    Only a 10-15 second resume

    Remember when doing hibernate, your amount of memory and its speed (as well as hard drive speed) will determine how fast you can resume. Less memory the better
    I have 256
    Is that true. The less memory, the quicker the resume. I understand that it is reading the "system" from the memory, but does the size really matter(I know it DOES matter, but I am talking about the memoru size, and nothing more). I think the speed might matter, but not the size, although, I could be totally wrong.

    Do you HORM, or hibernate/resume each time?

    Michael

  5. #15
    FLAC SFiorito's Avatar
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    well, think about how hibernation works: the system writes the contents of your RAM onto the disk (more RAM the more it needs to write). when you resume, XP reads the contents from the disk back into RAM. so if you've got 1GB of RAM it needs to read/write roughly that much. it would only matter if you've got a slow hard drive. besides, a CarPC probably won't need more than 256MB of RAM, right (512MB max)? especially if you use something like nLite (my system usually hovers around 25MB memory usage).

  6. #16
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    Quote Originally Posted by SFiorito
    well, think about how hibernation works: the system writes the contents of your RAM onto the disk (more RAM the more it needs to write). when you resume, XP reads the contents from the disk back into RAM. so if you've got 1GB of RAM it needs to read/write roughly that much. it would only matter if you've got a slow hard drive. besides, a CarPC probably won't need more than 256MB of RAM, right (512MB max)? especially if you use something like nLite (my system usually hovers around 25MB memory usage).
    Makes sense.

    But, if you system only uses about 25mb of memory (I know how optimized your system must be) then all it is writing is 25 mb of information, no matter how large the system memory is. You could have 1gig or memory, but there is only 25mb to read and write, so there wouldn't be any difference in resume time, right? Or am I not on the right track there. Perhaps the rest of the memory is filled with "nothing" that must be written and read as well.

    I am just curious how much difference it makes really. I guess I can create a Hibernation point with 128, and 256, and if I have more memory, more, and see how much of a difference it makes to my setup. I guess I can also try some different hardrives of varying speed, and see how that works as well.

    I wonder how much time I will have tonight to do that.

    Michael

  7. #17
    FLAC SFiorito's Avatar
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    yeah, it's probably filled with nothing, but if you see the size of the hiberfil.sys file on the root of your drive you'll see it's always nearly the size of the RAM you have regardless of how much you're actually using.

    that's the other thing to keep in mind is if you have 512MB of RAM and want to hibernate you'll use that much space up on your drive for the hibernation file. that's one of the issues with us using CF cards (or other flash storage) and HORM. that's why I don't use hibernation on my desktop system because it would use up 1GB of HDD space...(which could be filled with pr0n instead.... )

  8. #18
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    Quote Originally Posted by SFiorito
    yeah, it's probably filled with nothing, but if you see the size of the hiberfil.sys file on the root of your drive you'll see it's always nearly the size of the RAM you have regardless of how much you're actually using.

    that's the other thing to keep in mind is if you have 512MB of RAM and want to hibernate you'll use that much space up on your drive for the hibernation file. that's one of the issues with us using CF cards (or other flash storage) and HORM. that's why I don't use hibernation on my desktop system because it would use up 1GB of HDD space...(which could be filled with pr0n instead.... )
    K, Then I shall use as little as possible, unless I find that the boot times are not significantly different. Since I am using a hardrive, the size of the hiberfil.sys file is of much less concern then for you using a CF card.

    I will report back as soon as I have some boot time differences. Unfortunately, I don't have that much ram (Perhaps 128, 256, and I am waiting for some 256 sticks so I can make 512 and 384) and I may have a couple of hard drives, butnothing fancy smancy, perhaps a 5600 and 7100, but I don't think anything else. I will test them anyway.

    Michael

  9. #19
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    i've started using hibernate while i prepare th PC for the intall.
    its got 128mb ram and it hibernates in about 3-4 seconds and resumes to music playing in 23 seconds

    thats running a frontend and without any OS tweaking. i'm pretty satisfied with that, especially if i can boot from my alarm remote. but i may be able to shave a couple more seconds off

  10. #20
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    Hi, just one thaut. What about using HORM and when you hibernate first time you use let's say 128MB PAM, and then you change the plate with something like 256 or 512 MB RAM. Would this work??

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