HrKvalvik
Level 1 (4 points)
Desktops

Q: CPU usage 400% on iMac 5k!

Hi!
I just bought an iMac 5K with 4GHz i7, SSD and 32GB RAM. When I started using it even the smallest things god the fan running at full speed. Lightroom peaked out at 700% CPU usage.

I returned it and the Apple service centre changes the motherboard and bluetooth module.

 

After getting it back it seems to do a better jobb but the CPU usage is still from 200-400% (++) when using Lightroom.
It also takes a couple of seconds for the images to load in and show all of the details. The images are RAW files from the Nikon D750.

 

I was expecting A LOT more from this beast of a computer.

 

How are your CPU usage in similar tasks? Should I return the iMac?

iMac (Retina 5K, 27-inch, Late 2015), OS X El Capitan (10.11.5)

Posted on Jun 5, 2016 2:21 PM

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HrKvalvik

Q: CPU usage 400% on iMac 5k!

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  • Helpful answers

  • by Mike Sombrio,

    Mike Sombrio Mike Sombrio Jun 5, 2016 2:44 PM in response to HrKvalvik
    Level 6 (17,283 points)
    Apple Watch
    Jun 5, 2016 2:44 PM in response to HrKvalvik

    Run and post an EtreCheck report http://etrecheck.com/

  • by HrKvalvik,

    HrKvalvik HrKvalvik Jun 5, 2016 10:13 PM in response to Mike Sombrio
    Level 1 (4 points)
    Desktops
    Jun 5, 2016 10:13 PM in response to Mike Sombrio

    Here is the result of the test:

    Everything seems to be good! Maybe I'm to picky.

     

    EtreCheck version: 2.9.12 (265)

    Report generated 2016-06-06 07:05:47

    Download EtreCheck from https://etrecheck.com

    Runtime 1:17

    Performance: Excellent

     

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

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

     

    Problem: No problem - just checking

     

    Hardware Information: ⓘ

        iMac (Retina 5K, 27-inch, Late 2015)

        [Technical Specifications] - [User Guide] - [Warranty & Service]

        iMac - model: iMac17,1

        1 4 GHz Intel Core i7 CPU: 4-core

        32 GB RAM Upgradeable - [Instructions]

            BANK 0/DIMM0

                8 GB DDR3 1867 MHz ok

            BANK 0/DIMM1

                8 GB DDR3 1867 MHz ok

            BANK 1/DIMM0

                8 GB DDR3 1867 MHz ok

            BANK 1/DIMM1

                8 GB DDR3 1867 MHz ok

        Bluetooth: Good - Handoff/Airdrop2 supported

        Wireless: Unknown

    Video Information: ⓘ

        AMD Radeon R9 M390 - VRAM: 2048 MB

            iMac 5120 x 2880

     

    System Software: ⓘ

        OS X El Capitan 10.11.5 (15F34) - Time since boot: less than an hour

     

    Disk Information: ⓘ

        APPLE SSD SM0256G disk0 : (251 GB) (Solid State - TRIM: Yes)

            EFI (disk0s1) <not mounted> : 210 MB

            Macintosh HD (disk0s2) / : 250.14 GB (214.95 GB free)

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

     

        ST3000DM001-1ER166 disk4 : (3 TB) (Rotational)

            EFI (disk4s1) <not mounted> : 210 MB

            LaCie 3TB TB2 (disk4s2) /Volumes/LaCie 3TB TB2 : 3.00 TB (2.35 TB free)

     

    USB Information: ⓘ

        General USB Flash Disk 16,12 GB

            EFI (disk3s1) <not mounted> : 210 MB

            DCAB55F1-9AC6-46D6-892F-354D73A70826 (disk3s2) /Volumes/DCAB55F1-9AC6-46D6-892F-354D73A70826 : 15.78 GB (15.74 GB free)

        Broadcom Corp. Bluetooth USB Host Controller

        Apple Inc. FaceTime HD Camera (Built-in)

        Apple, Inc. Keyboard Hub

            Wacom Co.,Ltd. CTH-460

            Apple Inc. Apple Keyboard

        Seagate FreeAgent GoFlex 750,16 GB

            EFI (disk2s1) <not mounted> : 210 MB

            iMac-FW800 (disk2s2) /Volumes/iMac-FW800 : 749.81 GB (239.12 GB free)

     

    Thunderbolt Information: ⓘ

        Apple Inc. thunderbolt_bus

            LaCie d2 TBT2 USB3

     

    Gatekeeper: ⓘ

        Mac App Store and identified developers

     

    Kernel Extensions: ⓘ

            /System/Library/Extensions

        [not loaded]    com.wacom.kext.pentablet (Pen Tablet 5.3.5-4 - SDK 10.9 - 2016-06-01) [Support]

     

    System Launch Agents: ⓘ

        [not loaded]    7 Apple tasks

        [loaded]    154 Apple tasks

        [running]    77 Apple tasks

     

    System Launch Daemons: ⓘ

        [not loaded]    46 Apple tasks

        [loaded]    159 Apple tasks

        [running]    85 Apple tasks

     

    Launch Agents: ⓘ

        [not loaded]    com.adobe.AAM.Updater-1.0.plist (2016-05-30) [Support]

        [running]    com.adobe.AdobeCreativeCloud.plist (2016-05-30) [Support]

        [running]    com.wacom.pentablet.plist (2014-08-20) [Support]

     

    Launch Daemons: ⓘ

        [running]    com.adobe.adobeupdatedaemon.plist (2016-05-30) [Support]

        [loaded]    com.adobe.agsservice.plist (2016-05-30) [Support]

     

    User Launch Agents: ⓘ

        [loaded]    com.adobe.AAM.Updater-1.0.plist (2016-06-01) [Support]

        [loaded]    com.google.keystone.agent.plist (2016-05-30) [Support]

     

     

    Other Apps: ⓘ

        [running]    com.adobe.CCLibrary.65312

        [running]    com.adobe.CCXProcess.84832

        [running]    com.adobe.acc.AdobeDesktopService.57952.6A9A3306-C8FE-4EEA-87DF-BBB05951B525

        [running]    com.adobe.accmac.19552

        [running]    com.google.Chrome.83232

        [running]    com.wacom.ConsumerTouchDriver.88992

        [running]    com.wacom.TabletDriver.89312

        [loaded]    391 Apple tasks

        [running]    186 Apple tasks

     

    Internet Plug-ins: ⓘ

        QuickTime Plugin: 7.7.3 (2016-05-05)

        WacomTabletPlugin: WacomTabletPlugin 2.1.0.6 - SDK 10.9 (2014-08-20) [Support]

        AdobeAAMDetect: 3.0.0.0 - SDK 10.9 (2016-05-30) [Support]

        Default Browser: 601 - SDK 10.11 (2016-05-05)

     

    3rd Party Preference Panes: ⓘ

        PenTablet (2016-06-01) [Support]

     

    Time Machine: ⓘ

        Time Machine not configured!

     

    Top Processes by CPU: ⓘ

             2%    fontd

             2%    WindowServer

             0%    kernel_task

             0%    Dock

             0%    cloudpaird

     

    Top Processes by Memory: ⓘ

        1.46 GB    kernel_task

        590 MB    Google Chrome Helper(6)

        197 MB    Google Chrome

        164 MB    mds_stores

        131 MB    PenTabletDriver

     

    Virtual Memory Information: ⓘ

        27.00 GB    Free RAM

        5.00 GB    Used RAM (1.40 GB Cached)

        0 B    Swap Used

     

    Diagnostics Information: ⓘ

        Jun 6, 2016, 07:02:46 AM    Self test - passed

     

  • by Mike Sombrio,

    Mike Sombrio Mike Sombrio Jun 6, 2016 2:56 AM in response to HrKvalvik
    Level 6 (17,283 points)
    Apple Watch
    Jun 6, 2016 2:56 AM in response to HrKvalvik

    You're right, that's a very clean report. If the fans continue to be a problem try resetting the SMC Reset the System Management Controller (SMC) on your Mac - Apple Support

  • by HrKvalvik,

    HrKvalvik HrKvalvik Jun 6, 2016 3:03 AM in response to Mike Sombrio
    Level 1 (4 points)
    Desktops
    Jun 6, 2016 3:03 AM in response to Mike Sombrio

    The fan wasn't the problem it was more the CPU percentage when working with Lightroom.
    I'll give 4K video editing a go. You'll think the iMac i7 with 32GB RAM would do a good job with that.

  • by Handcarr,

    Handcarr Handcarr Jun 6, 2016 9:02 PM in response to HrKvalvik
    Level 1 (8 points)
    Desktops
    Jun 6, 2016 9:02 PM in response to HrKvalvik

    Just to be clear, when it says that a processes is using 700% CPU, it means that it is using 7 full cores. It is not trying to use 7 times the total amount of CPU in the machine.

    Now that I've clarified that, it isn't unusual for Lightroom to use 200% or more when it is working on something (rendering, syncing files, importing, etc), but mine idles around 20% when it isn't doing anything.

  • by HrKvalvik,

    HrKvalvik HrKvalvik Jun 12, 2016 11:02 AM in response to Handcarr
    Level 1 (4 points)
    Desktops
    Jun 12, 2016 11:02 AM in response to Handcarr

    Well, I only have 4 cores if I'm not mistaken?
    I was just now using chrome (YouTube) with Lightroom idle in the background with no tasks running when I suddenly hear the fan speed up and the CPU was above 300%.

    Yesterday when flipping through images in Lightroom the fan went totally nuts.

     

    I was expecting MUCH more from a computer costing 3500 USD. As of now I could've kept my 2009 i5.

  • by MistaPinguin,

    MistaPinguin MistaPinguin Jul 18, 2016 1:21 PM in response to HrKvalvik
    Level 1 (4 points)
    Jul 18, 2016 1:21 PM in response to HrKvalvik

    I have the same problem with the same specification - its horrible loud.

    My old iMac from mid 2011 ist very quiet at lightroom import.

  • by HrKvalvik,

    HrKvalvik HrKvalvik Jul 18, 2016 1:27 PM in response to MistaPinguin
    Level 1 (4 points)
    Desktops
    Jul 18, 2016 1:27 PM in response to MistaPinguin

    I had to download a fan controller app and set the speed manually. The noise was unbearable, especially when the fan reached 2500++ RPM.

     

    Disappointing from a new top-of-the-line iMac. Also editing RAW files from my Nikon D750 isn't as snappy as I would have thought.