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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

Reply
9 replies

Jun 5, 2016 10:13 PM in response to SeaPapp

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


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.

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.

CPU usage 400% on iMac 5k!

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