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  1. #21  
    @ShiftyAxel

    Can you please retest with GPS, wifi, BT and cdma/gsm turned on? I want to make sure that there is sufficient power to drive the various bits.

    Others,

    Please chime in with your test results. We need more data points to be able to determine safe & reasonable lower bounds.
    Follow me on Twitter: http://twitter.com/warthogkernel

    Experimental warthog kernels for webOS devices. Patches such as Muffle System Logging, Max Blocker etc.

    Donations go towards further experimentation.
  2. #22  
    Those results are with wifi, gps, bluetooth and data. I wanted to test real-world usge to be sure of stability
    By the way, I'm now working on undervolting my Touchpad, shall I post the results here when i'm done?
    webOS Ports' UI Architect & luna-sysmgr guru.
  3. #23  
    Here's an experimental kernel for warthog testing.

    * Undervolted (not all the way to ShiftyAxel's numbers but close)
    * A little OC surprise (untested)

    https://www.box.net/s/0c8tbfra857dut57pae2

    PS: If you have to ask how to memboot, this is not for you.
    Follow me on Twitter: http://twitter.com/warthogkernel

    Experimental warthog kernels for webOS devices. Patches such as Muffle System Logging, Max Blocker etc.

    Donations go towards further experimentation.
  4. #24  
    Sure. Post the TouchPad numbers or make a new separate thread for it (and PM me the URL)

    Data point for you. 1.728GHz is just about the max where I can get the stock voltage up to.

    For the TouchPad, due to the size of the battery, it was more important for me initially to figure out what the upper bound of stock voltage @1.2GHz could be driven to. That said, every little bit counts so post away and I'll make the adjustments as I have time.
    Follow me on Twitter: http://twitter.com/warthogkernel

    Experimental warthog kernels for webOS devices. Patches such as Muffle System Logging, Max Blocker etc.

    Donations go towards further experimentation.
  5.    #25  
    Quote Originally Posted by ShiftyAxel View Post
    @codecrumb I'm currently running 800mV for everything under 768, 900mV for 768 and stock-75mV for all above, nice and stable unless you set a really low max clock (122-368.) Shall continue experimenting, i expect i'll be able to make significant changes yet.

    EDIT: Okay, I've found the minimum voltages that my Pre3 can handle. Each one was tested with phone, messaging, music, facebook, bad kitty and feeder running in the background. For the ones above 768mhz, I also opened Ground Effect and did some browsing.

    Here they are:
    128Mhz: 800mV
    245Mhz: 800mV
    368Mhz: 800mV
    768Mhz: 850mV
    806Mhz: 850mV
    1Ghz: 925mV
    1.2Ghz: 1025mV
    1.4Ghz: 1075mV
    1.5Ghz: 1150mV
    1.6Ghz: 1225mV
    1.8Ghz: 1300mV
    1.9Ghz: 1350mV
    Which kernel are you running? I'm pretty jealous right now... I can't clock anything past 368mhz even .5 mV without locking up
  6. #26  
    Shiftyaxel is running a kernel by unixpsycho.

    I'm using warthog (obviously).

    Looks like no one discovered my little surprise yet........
  7. #27  
    Quote Originally Posted by codecrumb View Post
    Here's an experimental kernel for warthog testing.

    * Undervolted (not all the way to ShiftyAxel's numbers but close)
    * A little OC surprise (untested)

    https://www.box.net/s/0c8tbfra857dut57pae2

    PS: If you have to ask how to memboot, this is not for you.
    I don't have to ask how to memboot but I am having trouble opening your uImage file :P
    Stay thirsty, my friends
  8. #28  
    So the Pre3 does not only work at min. or max. frequency but also at all frequencies in between?
  9.    #29  
    I just updated to the las uberkernel and it fixed the voltage setting bug. I'm seeing voltages around the ones previously posted.. I generally added 25mV to all of ShiftyAxel's settings since my pre 3 couldn't handle those low voltages.
  10. #30  
    I'm beginning to think that +25 across all of the voltages i posted is a good idea- it's fine for me under normal usage, but it locked up on me when i was playing a relatively intensive flash game.

    Also apologies for the delay in posting the touchpad settings, I've found that it's a fair bit less crash-friendly and ends up wiping my profiles :| I've started keeping notes of the stable voltages now though, so with any luck i'll have them soon though i'm not sure what you mean by 'stock voltage'.

    Edit: What voltages are you running, Sprintguy?

    Also, I'm actually running UberKernel currently. I switched to it from Warthog when undervolting came to the beta feeds. Looks like the beta warthog doesn't have ondemand-ng or modifiable voltage settings either. Coming soon i hope?
    Last edited by ShiftyAxel; 11/16/2011 at 12:11 PM.
    webOS Ports' UI Architect & luna-sysmgr guru.
  11. #31  
    Warthog all day long for me. Variable voltage overrides on the latest Warthog would be great.
  12.    #32  
    I undervolted everything under 768mhz to the lowest value possible, no issues so far. My complete list is here...

    122mhz - 800mV
    245mhz - 800mV
    368mhz - 800mV
    768mhz - 875mV
    806mhz - 875mV
    1ghz - 950mV
    1.2ghz - 1050mV
    1.4ghz - 1100mV

    haven't messed with any higher frequencies.... I rarely get lag and am seeing better battery life so far. I would estimate between 10-15% better.
  13. #33  
    i am running similar voltages for frequencies up to 1.4 ghz. i am having no stability issues so far and my battery drain is reduced by ~10% in idle.
  14. #34  
    Quote Originally Posted by wollewotz View Post
    So the Pre3 does not only work at min. or max. frequency but also at all frequencies in between?
    Depends on the CPU governor that you're using, but generally yes, it can dynamically scale to several frequencies between the min and max. If you use the Performance governor, I think the moment there is any load, it will spike straight to max, regardless of whether or not that is really necessary.
    [ everythingsablur ]

    Palm lineage:
    PalmPilot Pro -> PalmPilot Pro w/ 2MB OS 3 upgrade -> Handspring Visor Deluxe -> Handspring Visor Prism -> Handspring Visor Prism w/ VisorPhone -> ... (the long hiatus) ... -> HP TouchPad & HP Pre 3 (AT&T)
  15. #35  
    I didn't check the voltages it uses, but warthog-2.2.3-24 gives me some instability. 2.2.3-17 seems solid, though.

    /noradtux
  16. #36  
    Quote Originally Posted by ShiftyAxel View Post

    Also apologies for the delay in posting the touchpad settings, I've found that it's a fair bit less crash-friendly and ends up wiping my profiles :| I've started keeping notes of the stable voltages now though, so with any luck i'll have them soon though i'm not sure what you mean by 'stock voltage'.
    What I meant was that 1.728GHz is the fastest that I can clock the TouchPad at using the default voltage for 1.2GHz.
    Follow me on Twitter: http://twitter.com/warthogkernel

    Experimental warthog kernels for webOS devices. Patches such as Muffle System Logging, Max Blocker etc.

    Donations go towards further experimentation.
  17. #37  
    Quote Originally Posted by noradtux View Post
    I didn't check the voltages it uses, but warthog-2.2.3-24 gives me some instability. 2.2.3-17 seems solid, though.

    /noradtux
    If you can help isolate which frequencies are unstable, that would be very useful in isolating any problem voltages.

    For -24, these are the voltages I am using.

    static struct clkctl_acpu_speed acpu_freq_tbl[] = {
    { 0, 24576, SRC_LPXO, 0, 0, 30720000, 800, VDD_RAW(800) },
    { 0, 61440, PLL_3, 5, 11, 61440000, 800, VDD_RAW(800) },
    { 1, 122880, PLL_3, 5, 5, 61440000, 800, VDD_RAW(800) },
    { 0, 184320, PLL_3, 5, 4, 61440000, 800, VDD_RAW(800) },
    { 0, MAX_AXI_KHZ, SRC_AXI, 1, 0, 61440000, 800, VDD_RAW(800) },
    { 1, 245760, PLL_3, 5, 2, 61440000, 800, VDD_RAW(800) },
    { 1, 368640, PLL_3, 5, 1, 122800000, 800, VDD_RAW(800) },
    /* AXI has MSMC1 implications. See above. */
    { 1, 768000, PLL_1, 2, 0, 153600000, 900, VDD_RAW(900) },
    /*
    * AXI has MSMC1 implications. See above.
    */
    { 1, 806400, PLL_2, 3, 0, UINT_MAX, 900, VDD_RAW(900), &pll2_tbl[0]},
    { 1, 1024000, PLL_2, 3, 0, UINT_MAX, 950, VDD_RAW(950), &pll2_tbl[1]},
    { 1, 1200000, PLL_2, 3, 0, UINT_MAX, 1050, VDD_RAW(1050), &pll2_tbl[2]},
    { 1, 1401600, PLL_2, 3, 0, UINT_MAX, 1100, VDD_RAW(1100), &pll2_tbl[3]},
    { 1, 1516800, PLL_2, 3, 0, UINT_MAX, 1200, VDD_RAW(1200), &pll2_tbl[4]},
    { 1, 1536000, PLL_2, 3, 0, UINT_MAX, 1200, VDD_RAW(1200), &pll2_tbl[5]},
    { 1, 1689600, PLL_2, 3, 0, UINT_MAX, 1250, VDD_RAW(1250), &pll2_tbl[6]},
    { 1, 1804800, PLL_2, 3, 0, UINT_MAX, 1350, VDD_RAW(1350), &pll2_tbl[7]},
    { 1, 1920000, PLL_2, 3, 0, UINT_MAX, 1400, VDD_RAW(1400), &pll2_tbl[8]},
    { 1, 2016000, PLL_2, 3, 0, UINT_MAX, 1475, VDD_RAW(1475), &pll2_tbl[9]},
    { 0 }
    };
    Follow me on Twitter: http://twitter.com/warthogkernel

    Experimental warthog kernels for webOS devices. Patches such as Muffle System Logging, Max Blocker etc.

    Donations go towards further experimentation.
  18. #38  
    Quote Originally Posted by hawaii View Post
    Warthog all day long for me. Variable voltage overrides on the latest Warthog would be great.
    Now available on warthog-pre3-25 in the alpha kernel feeds
    Follow me on Twitter: http://twitter.com/warthogkernel

    Experimental warthog kernels for webOS devices. Patches such as Muffle System Logging, Max Blocker etc.

    Donations go towards further experimentation.
  19. #39  
    Quote Originally Posted by codecrumb View Post
    Now available on warthog-pre3-25 in the alpha kernel feeds
    Just updated and grabbed the package. Thanks for adding it.
  20. #40  
    warthog-pre3-26 now available with even lower power.
    Follow me on Twitter: http://twitter.com/warthogkernel

    Experimental warthog kernels for webOS devices. Patches such as Muffle System Logging, Max Blocker etc.

    Donations go towards further experimentation.
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