Battery life

Discussion in 'ChevyNo1' started by iWordplay, Apr 23, 2011.

  1. hrdnhvy
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    hrdnhvy New Member

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    I have always kept JIT disabled simply because it uses a little more ram & the droid is strapped for ram to start with...
  2. danceswithbongs
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    danceswithbongs New Member

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    HnH
    That is interesting about JIT.
    Sorry, but do you mind explaining exactly what benefits one gets from JIT being enabled? I thought I remember it deals with debugging. If so its it only helpful for the developer regarding problem solving?

    walkin the walk while tappin the talk
    danceswithbongs
  3. hrdnhvy
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    hrdnhvy New Member

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  4. danceswithbongs
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    danceswithbongs New Member

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    Much appreciated!
    JIT. JIT.JIT.JIT DOWN
    911 is a joke in my town
    PE pc mix

    walkin the walk while tappin the talk
    danceswithbongs
  5. dpaine88
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    dpaine88 New Member

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    I'm givin it a shot w/o JIT
  6. 0vermind
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    0vermind New Member

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    Being a developer, here's my reply on what JIT does. JIT only helps in certain conditions. Although it's believed that it increased performance of the phone all together, this usually is not the case. JIT allows programs to gain performance by having code compiled at runtime continuously as the program runs, however, it really doesn't increase any performance unless there is a lot of a code (E.G. Larger apps, such as, yes, games). Side Note: Anyone running any of the 3D launchers will see a negative impact on performance.

    Disabling JIT will in fact increase your battery usage if you don't run large apps or games. This is because you are turning off extra compiling for EVERY SINGLE app that runs on your phone.
  7. dpaine88
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    dpaine88 New Member

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    Good stuff, thanks for the info.
  8. Art Vandelay
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    Art Vandelay New Member

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    I too have terrible battery life. Maybe you guys can help me.

    I just turned off the JIT so hoping that helps, but maybe its my CPU settings too. Right now I have the governor set to on demand and the min is 250 and Max is 600. I'm using Chevy's bundle kernal 2.6.32 LowV 1.0ghz. I have brightness set to auto. Any recommendations on what else to do? With those settings and JIT on I'd get maybe 7 hours normal use and less than 4 with heavy browsing and some games.

    Thanks.
    Sent from my Droid using DroidForums
  9. 0vermind
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    0vermind New Member

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    What rom are you using? Cause I'm experiencing similar issues. Although turning off JIT does help, for some reason, my battery just drains fast. Period. For me, it's been since the libcore changes in Cyanogen. Recently, Prime made a change to his kernel that increases battery life by using the BF Scheduler, I'll try that and report back.
  10. hrdnhvy
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    hrdnhvy New Member

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    A lot of it has to do with how u have all of the other settings set as well, in addition to how u have your apps setup as well, if u use widgets, & how many screens u have set up, common battery killers are: widgets the more you have the faster the drain, do u have any apps that "auto update" or "auto refresh" at specific intervals such as facebook, any types of weather apps that run in the background etc...etc...u may want to also make sure that your phone is going into "sleep" mode properly when the screens is off by reviewing the battery info & stats comparing the phones screen on stats to the running stats, if your using setcpu what are the settings in the advanced tab at....there are so many minor variables that if overlooked can add up & drain a battery fast...do u leave bt on or off, same goes for wifi & do u have locations enabled or disabled, both network & or gps, is data roaming enabled or disabled, same with mobile networks, is roaming enabled or disabled...for most if not all the things listed to maximize battery life, if & when they are not needed keep them disabled.....i know there are more tweaks im sure i forgot, but its late & past my bedtime....lol
  11. Aenima75
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    Aenima75 New Member

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    Just so you know completely discharging and then fully charging a lithium ion battery is very stressful for them. You can actually ruin the battery and or severly shorten the life of the battery. They also do not have memories like nickel cadmium or nickel metal hydride batterys which need periodic full charge and discharge cycles. Ltihuim ion batterys are best maintained by charging as often as you can with the battery percent higher like 20 percent or higher. Even if its at 90 percent plug it in.

    Sent from my Droid using DroidForums
  12. redoregon
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    redoregon Member

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    And just to back up an accurate statement with numbers....

    How to Prolong Lithium-based Batteries - Battery University
  13. servo086
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    servo086 New Member

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    Witch!

    Sent from my Droid using DroidForums
  14. Aenima75
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    Aenima75 New Member

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    That was the exact site I was gonna use factualize my statement lol good research. I used to race electric hobby grade rc cars and you have to know a thing or two about the type of battery to get the most out of it. Also if you have a spare phone that is used as backup that is going to sit around for a while charge the battery fully and remove it from the phone before storage so it does not drain while sitting. A dead battery that sits for a long period of time is junk. If you need to reset battery stats to fix problems with the battery meter just reset with a full charge and then use it normally the software will self adjust as you use it and try not to let the battery get too low. Also lithium ion batterys do not last forever they have a limited amount of charge cycles before the batterys capacity steadily declines. IE if your battery is old and your battery life sucks get a new battery and if you want even better life get a high capacity battery. I think that's it... lol

    Sent from my Droid using DroidForums
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