Akamann
Level 1 (0 points)

Q: Osx 10.10.3 kernel_task amok

Hi everyone,

 

I received a new MBP 15.4 i7 from work last monday, now the following problem occurs:

 

kernel_task process runs constantly around 400 to 600% making laptop almost unusable and I have no idea where the problem might arise from,

any help is greatly appreciated, thank you in advance

 

- Have done a scm and ram reset with the help of support, reinstalled yosemite, did a hardware diagnostic check

- room temperature is around 20C

- happens with batterie and cable

 

- Software used/installed:

     - FileVault (required by work)

     - Office 2016 ctp

     - webstorm

     - node.js and compass

     - google drive & onedrive

     - xcode

     - unity3d

     - browsers (chrome, opera, ff, safari)

     - etrecheck

     - blender

     - gimp

- unistalled parallels 10 as I though it might be the root of the problem

 

EtreCheck:

Problem description:

kernel_task

 

EtreCheck version: 2.2 (132)

Report generated 5/17/15, 10:53 AM

Download EtreCheck from http://etresoft.com/etrecheck

 

Click the [Click for support] links for help with non-Apple products.

Click the [Click for details] links for more information about that line.

 

Hardware Information: ℹ️

    15" MacBook Pro with Retina display (Late 2013)

    MacBook Pro - model: MacBookPro11,2

    1 2.2 GHz Intel Core i7 CPU: 4-core

    16 GB RAM Not upgradeable

        BANK 0/DIMM0

            8 GB DDR3 1600 MHz ok

        BANK 1/DIMM0

            8 GB DDR3 1600 MHz ok

    Bluetooth: Good - Handoff/Airdrop2 supported

    Wireless:  en0: 802.11 a/b/g/n/ac

    Battery: Health = Normal - Cycle count = 7 - SN = C015083057JF9CRAU

 

Video Information: ℹ️

    Intel Iris Pro

        Color LCD 2880 x 1800

 

System Software: ℹ️

    OS X 10.10.3 (14D136) - Time since boot: 0:4:38

 

Disk Information: ℹ️

    APPLE SSD SM0256F disk0 : (251 GB)

        EFI (disk0s1) <not mounted> : 210 MB

        Recovery HD (disk0s3) <not mounted>  [Recovery]: 650 MB

        Macintosh HD (disk1) / : 249.78 GB (177.14 GB free)

            Encrypted AES-XTS Unlocked

            Core Storage: disk0s2 250.14 GB Online

 

USB Information: ℹ️

    Apple Internal Memory Card Reader

    Apple Inc. Apple Internal Keyboard / Trackpad

    Apple Inc. BRCM20702 Hub

        Apple Inc. Bluetooth USB Host Controller

 

Thunderbolt Information: ℹ️

    Apple Inc. thunderbolt_bus

 

Gatekeeper: ℹ️

    Mac App Store and identified developers

 

Problem System Launch Daemons: ℹ️

    [failed]    com.apple.mtrecorder.plist

 

Launch Daemons: ℹ️

    [failed]    com.apple.spirecorder.plist

    [loaded]    com.microsoft.office.licensingV2.helper.plist [Click for support]

 

User Launch Agents: ℹ️

    [loaded]    com.google.keystone.agent.plist [Click for support]

 

User Login Items: ℹ️

    iTunesHelper    Application  (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

    Google Drive    Application  (/Applications/Google Drive.app)

 

Internet Plug-ins: ℹ️

    Default Browser: Version: 600 - SDK 10.10

    QuickTime Plugin: Version: 7.7.3

    Unity Web Player: Version: UnityPlayer version 5.0.2f1 - SDK 10.6 [Click for support]

 

Safari Extensions: ℹ️

    Open in Internet Explorer

 

3rd Party Preference Panes: ℹ️

    None

 

Time Machine: ℹ️

    Time Machine not configured!

 

Top Processes by CPU: ℹ️

        14%    webstorm

         5%    sysmond

         5%    WindowServer

         4%    Activity Monitor

         2%    fontd

 

Top Processes by Memory: ℹ️

    774 MB    kernel_task

    377 MB    Google Chrome Helper(4)

    295 MB    webstorm

    164 MB    Google Drive

    131 MB    Google Chrome

 

Virtual Memory Information: ℹ️

    11.00 GB    Free RAM

    5.32 GB    Used RAM

    0 B    Swap Used

 

Diagnostics Information: ℹ️

    May 17, 2015, 10:48:52 AM    Self test - passed

    May 16, 2015, 01:07:04 PM    /Library/Logs/DiagnosticReports/GIMP-bin_2015-05-16-130704_[redacted].cpu_resou rce.diag [Click for details]

    May 16, 2015, 12:57:32 PM    /Library/Logs/DiagnosticReports/installd_2015-05-16-125732_[redacted].cpu_resou rce.diag [Click for details]

 

 

Screen Shot 2015-05-17 at 11.10.36.png

Best regards

Akamann

 

Message was edited by: Akamann (forgot blender and gimp)

MacBook Pro (Retina, 15-inch, Mid 2014), OS X Yosemite (10.10.3), null

Posted on May 17, 2015 2:32 AM

Close
Akamann

Q: Osx 10.10.3 kernel_task amok

  • All replies
  • Helpful answers

  • by Linc Davis,

    Linc Davis Linc Davis May 17, 2015 6:10 AM in response to Akamann
    Level 10 (207,926 points)
    Applications
    May 17, 2015 6:10 AM in response to Akamann

    The kernel is using excessive processor cycles. Below are some possible causes for the condition.

    Throttling

    When it gets high temperature readings from the hardware, or low voltage readings from the battery of a MacBook, the kernel may try to compensate by interrupting the processor(s) to slow them down and reduce power consumption. This condition can be due to:

    ☞ a buildup of dust on the logic board

    ☞ high ambient temperature

    ☞ a worn-out or faulty battery in a portable

    ☞ the malfunction of a cooling fan, a temperature sensor, a voltage sensor, or some other internal component

    Note that if the problem is caused by a sensor, there may be no actual overheating or undervoltage.

    If the computer is portable, test with and without the AC adapter connected. If kernel_task hogs the processor only on AC power, charging is causing the machine to heat up. That behavior may be normal for some models. CPU usage should drop when charging is complete.

    Apple Diagnostics or the Apple Hardware Test, though not very reliable, is sometimes able to detect a fault. For more thorough hardware testing, make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

    If nothing is wrong with the hardware, then whatever you can do to improve cooling may help.

    Installed software

    User-installed software that includes a device driver or other kernel code may thrash the kernel. That category includes virtualization software, such as Parallels and VMware, as well as most commercial "anti-virus" products. Some system-monitoring applications, such as "iStat," can also contribute to the problem. You can test for this possibility by completely disabling or removing the software according to the developer's instructions, or starting in safe mode. Note, however, that disabling a system modification without removing it or testing in safe mode may not be as easy as you think.

    Corrupt NVRAM or SMC data

    Sometimes the problem is cleared up by resetting the NVRAM or the SMC.

    External display

    Connecting an external LCD display to some MacBook Pro models while the lid is open may cause this issue. If applicable, test by closing the lid or disconnecting the display. You might get better results with a newer LED display.

  • by Akamann,

    Akamann Akamann May 17, 2015 9:05 AM in response to Linc Davis
    Level 1 (0 points)
    May 17, 2015 9:05 AM in response to Linc Davis

    Looks like some sensor is dead. (1 week old)

    My second diagnose showed PFM006 and PPN001.

  • by Linc Davis,

    Linc Davis Linc Davis May 17, 2015 9:35 AM in response to Akamann
    Level 10 (207,926 points)
    Applications
    May 17, 2015 9:35 AM in response to Akamann

    Apple Diagnostics: Reference codes - Apple Support