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  1. Thread Author  Thread Author    #1  

    Default S3 mini battery drain by Kernel process

    Hi all,

    My wife decided to dump her iPhone and move to android after I raved so much about how good my S3 was. She brought the S3 mini approx 6 months, ago but right from day one it has had terrible battery life. She very rarely uses it for anything other than an alarm, so I installed the GSam battery monitor to find out what he problem was. This continuously shows that the Android OS kernal is chewing through most of the battery so if anyone has any ideas as to why this is then I would appreciate your advice.

    Attached is a screenshot of what is consuming the battery
    S3 mini battery drain by Kernel process-screenshot_2013-12-14-21-41-37.png

    And below are the details on the Kernel process. It is running Android 4.1.2 with firmware XXAMJ2

    Thanks for your help

    GSam Labs - Battery Monitor - Export Data
    Kernel (Android OS)
    14 Dec 2013 21:42:04

    Usage Details
    CPU Usage:8m 20s
    CPU Usage (Background Only):8m 20s
    Keep Awake:8m 22s
    App UID:0

    Wakelock Detail

    Included Packages

    Included Processes

    shm_common_chan
    shm_ca_wake_req
    vold
    file-storage
    migration/1
    ecryptfs-kthrea
    at_core
    jbd2/mmcblk0p23
    kworker/u:4
    kworker/u:3
    kworker/u:6
    jbd2/mmcblk0p25
    kworker/u:5
    kworker/u:7
    ta_loader
    kthreadd
    kworker/0:4
    kworker/u:0
    kworker/0:0
    kworker/0:1
    kworker/0:2
    kworker/u:2
    kworker/0:3
    kworker/u:1
    bdi-default
    debuggerd
    irq/72-ab8500
    sh
    dhd_sysioc
    ueventd
    jbd2/mmcblk0p12
    mmcqd/0boot0
    dhd_watchdog_th
    wl_event_handle
    mmcqd/0boot1
    kswapd0
    installd
    admsrv
    cpu-plug
    /init
    ksoftirqd/0
    ksoftirqd/1
    modem_log_relay
    modem-supervisor
    flush-0:17
    sva-loadd
    svnetd
    irq/335-tc360
    msa
    netd
    mmcqd/0
    shm_ac_sleep_re
    watchdog/0
    watchdog/1
    zygote
    kworker/1:3
    kworker/1:2
    flush-179:0
    kworker/1:1
    kworker/1:0
    sia-loadd
    khubd
    irq/474-mxt_ts
    fsnotify_mark
    sync_supers
    dhd_dpc
  2. #2  

    Default Re: S3 mini battery drain by Kernel process

    Joe,

    Welcome to the forums!

    In order to determine what you mean by 'terrible battery life' we're going to need to see some different data:
    - three screenshots from Settings -> Battery (see below for examples from a Galaxy S3)
    - be sure the phone starts fully charged
    - do not perform any intermediate charge cycles
    - let the battery run down to less than 30%
    You could also try GSam Battery Monitor Pro: (there's also a free version) to look at the Radio Detail (you could include that screenshot as well)Sent from my rooted, debloated, deodexed Sinclair ZX-80 running CM 10.2 using Tapatalk 4
    Thanked by:
    UJ95x 
  3. Thread Author  Thread Author    #3  

    Default Re: S3 mini battery drain by Kernel process

    Thanks for your help GSDer,

    I will ensure the phone is fully charged overnight and then send through the screenshots at the end of the day.

    Have a great Christmas and New Years

    Joe
  4. #4  
    wga22's Avatar

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    Default Re: S3 mini battery drain by Kernel process

    Any update? I am having similar problem.

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