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Thread: Open Boot Challenge 2009

  1. #41
    FLAC
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    Quote Originally Posted by tripzero View Post
    http://www.mp3car.com/vbulletin/linu...ml#post1349112

    I actually resumed slower than I cold booted on that system. Granted, this is without compression abilities that I have now in LinuxICE.

    @Tidder, why included s3? the difference in time on any given hardware is almost unmeasurable. It's like saying "ZOMG, my 2second resume is 0.14 seconds faster than your resume!" it's pointless and hardware nor software will really change the resume speed in any significant way.
    Perhaps it did take longer for you to resume than boot in that system, however i can safely say that a large majority of mp3car member's systems are faster using hibernation. Hence, most people are currently using hibernation/resume.

    I however I'm not trying to say that you should compare s3 and cold boot. what i'm trying to say is yes cold boot is a good measurement of how optimized an OS is, but it doesn't give an OS an advantage in carpc use, since s3 sleep is so readily available nowadays and is so much faster. Not only that, S3 allows your gps to be always on, and whenever you carpc wakes up there is no need to lock-on to satellite again which is something i love about s3.

    S3 standby video (currently being encoded, may take an hour to be available)
    But seriously, why bother with cold boot and hibernation


    Hibernation/Resume (22 ~ 23 Seconds): The pop noise you hear is from the legacy WAVEIN being very high for windows 7 (CF uses this, this why you get a pop with CF on resume) as pointed out by mitch, this was the reason why i switched to s3 sleep in the first place.

  2. #42
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    Ok I can agree with you on why cold boot really doesn't mean much but hibernation certainly does. If your car ever sits for a few days you end up resuming from hibernation.
    Also, in full s3 sleep, USB devices should be powered off...if you enabled the keep usb devices powered then it puts the CPU into a higher sleep state which uses more power.

  3. #43
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    tripzero's Avatar
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    S3 is really nice. It's how it should be done, if you can. Your hibernation video makes me want to bust out the big dogs of war. Let's see if I can get my cold boot faster than that.
    Former author of LinuxICE, nghost, nobdy.
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  4. #44
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    don't wage war on my hibernation time, it aint what it was designed for.
    if you want to beat a real hibernation beat this guy:
    [media]http://www.youtube.com/watch?v=dStymNdPRpk[/media]
    you're going to work real hard. I had a similar setup back when, and i can definitely confirm that thats how these foxconn boards boot.

  5. #45
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    I'm grabbing the new 7embedded release... wouldn't want kev to get the best time :P

  6. #46
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    Quote Originally Posted by justchat_1 View Post
    Ok I can agree with you on why cold boot really doesn't mean much but hibernation certainly does. If your car ever sits for a few days you end up resuming from hibernation.
    Also, in full s3 sleep, USB devices should be powered off...if you enabled the keep usb devices powered then it puts the CPU into a higher sleep state which uses more power.
    i guess i never looked into this, because i haven't have battery drain problem yet, but i figured that the RAM is on the 5V rail and so is the USB, so if you keep the ram alive, you'll have to do the same to the USB as well. If the motherboard board can manage these two separately, then i learned something new today. However, having my gps constantly locked on is definitely worth keeping my usb running.

  7. #47
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    Okay, so I pulled out a couple more cards I had in my deck to improve boot a bit. The first card is an upgrade from LinuxICE2's base from Ubuntu 9.04 to 10.04. Both 9.10 and 10.04 have significant boot improvements over 9.04. My fastest times have come from a 9.10 base. This was my first time trying 10.04. Ubuntu 10.04 is still alpha, so it's probably not a good idea to upgrade to it.

    Secondly, the new kernel in 10.04 allows some interesting possibilities. Namely, BtrFS.

    BtrFS background.

    BtrFS is developed by oracle as a free, GPL'd filesystem with similar features as Sun's ZFS. Most notably online defragmentation, online volume growth/shrinking, snapshotting, and finally, transparent compression. Btrfs is so advanced that the current developer of the EXT4 filesystem called ext4 a stop-gap and pointed to btrfs as the way for the future. Btrfs is also being optimized for SSDs.

    For the purpose of booting the compression feature should bring a smile to anyone's face. One of the biggest factors in a boot times is how fast you can read files from the hard drive. Reading compressed files puts more load on the cpu and off the disk.

    Btrfs is still experimental and isn't considered production ready (and probably won't for a few years). But it's stable enough for us early adopters to have some fun with it.

    Without further delay:

    [media]http://www.youtube.com/watch?v=Mymb9g_N_Ng[/media]

    Mark is at 00:03s and music starts at ~00:26s for a grand total of 23s. Heh, two days of hacking for only 5 seconds saved? Oh well, in about 2 years I'll have made up the time.
    Former author of LinuxICE, nghost, nobdy.
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  8. #48
    FLAC SFiorito's Avatar
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    Ok, here's my first try with a new image from the latest release of WinEmb 2011 RC.

    IGN is on at about 3sec, M3 ATX sets power at 5 sec as seen by the screen which is directly connected to PSU, music starts playing at 20. need to figure out why Centrafuse wasn't displaying until 24 though. Still need to work out some kinks in this new WinEmb image since I started from scratch instead of upgrading my old CTP2 image.

    This is with the hardware in my sig. I recorded this with my iPhone so the volume is low, so turn it up to hear the music. I didn't get close enough, but I was trying to show in taskmgr that memory consumption while CF was running was at 520MB, low CPU usage.

    [media]http://www.youtube.com/watch?v=87LHizlgDQk[/media]

    Kev, would be interested in what, if any, BIOS optimizations you've done for the Zotac. I haven't really done anything in that area.

    **Edit: I'll shoot a couple more videos later for cold boot and to show some of the WinEmb features I'm using.
    EWF, HORM, MinLogon on XP.

    Zotac ION Atom N330, 2GB low-profile RAM, M3-ATX
    Win Embedded Std 2011 RC
    OCZ Vertex Turbo 30GB SSD
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    BlueSoleil BT, i-Blue GM-2 GPS, DirectedHD Radio, Andrea Mic
    VoomPC 2

  9. #49
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    i really like that zotac board. 20secs puts you at the fastest resume time.

    i haven't done anything with the bios yet. In fact, I'm pretty sure there are some bugs as I'm experiencing some weirdness when I change the boot priority around. I need to check if there is a bios update. I imagine doing the normal turn off all auto-detection will help slim down post time a bit.
    Former author of LinuxICE, nghost, nobdy.
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  10. #50
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    Quote Originally Posted by tripzero View Post
    20secs puts you at the fastest resume time.
    If we're going by the way you did your "mark" then SFiorito's resume time is 15 seconds since you don't have an ignition lag in your time and he does. (power up at 5 secs into the vid, playing music 20 secs into the vid = 15 seconds total)

    Is this a real Challenge or a "I'm the Challenger so I make the rules" challenge?
    Tidder

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