Kernel_task is using over 300% of CPU

Hi,
Kernel_task is using over 300% CPU and my Macbook Pro is running really slowly as a result. I have reset SMC and PRAM, done an Apple hardware test, Cleaned with onyX, hoovered the fans and restored with time machine, all to no avail. Can anyone please help or suggest anything I can try?
Thanks

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Kernel_task hogging my CPU, over 300%

Hi there, I was wondering if anyone can help me solve an issue with my mac.
I noticed that my kernel_task was really draining my CPU, hogging around 300%, barely leaving around 2% of RAM for the user. After doing a bit of research I found that kernel_task basically manages a load of extensions for your hardware and system programs.
Here's some pieces that i've learnt about the issues, as well as the steps that i've taken so far to try to resolve it.
- When I boot in safe mode the computer performs well, suggesting this could be a 3rd party extension issue
- Created a user profile, where the issue still occurs suggesting this is a 3rd party system extension
- Re-installed OSx to see if that would help it - nope
- Deleted the majority of my 3rd party apps, one by one to see if these were the issue. Still not fixed it as yet.
- I've not added any new RAM recently - I'm aware this can be a common cause of kernel_task issues
When I restart here's what the console is saying...
29/01/12 6:24:07 PM
[0x0-0xa00a].com.apple.iTunes[114]
error initializing gpu library
29/01/12 6:24:07 PM
[0x0-0xa00a].com.apple.iTunes[114]
AppleGVA:: Error creating the accelerator 1
29/01/12 6:25:15 PM
com.apple.launchd.peruser.501[90]
([0x0-0x34034].com.freemacsoft.AppCleaner[243]) Exited: Killed
29/01/12 6:27:01 PM
com.freemacsoft.appcleanerd[271]
Appcleanerd started successfully.
29/01/12 6:27:15 PM
com.apple.launchd.peruser.501[90]
([0x0-0x8008].com.apple.universalaccess[101]) Exited: Killed
29/01/12 6:27:15 PM
com.apple.launchd.peruser.501[90]
(com.apple.AirPortBaseStationAgent[112]) Exited: Killed
29/01/12 6:27:33 PM
com.apple.launchd[1]
*** launchd[1] has started up. ***
29/01/12 6:27:44 PM
com.freemacsoft.appcleanerd[44]
Appcleanerd started successfully.
29/01/12 6:28:23 PM
com.apple.WindowServer[69]
Sun Jan 29 18:28:23 Christopher-Edens-MacBook-Pro.local WindowServer[69] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
Any help that you can give me is greatly appreciated.
Thanks!
Chris

MacBook Pro early 2011 2.3 GHz Core i7, 10.6.8. It had been running fine since I got it, but a month ago it started having those fits of sluggishness that many have described on this thread. Within a few days it was almost impossible to work on it. Activity Monitor was telling me two things: 1. iTunes was taking over 100% of CPU power — this was resolved as I have explained here:
https://discussions.apple.com/message/17681010
(note that I hadn't been aware that it was a thread dedicated to "iTunes for Windows" when I posted it).
2., Activity Monitor kept on showing peaks of anything between 500 and over 700% of CPU use by the kernel_task process, especially when watching full-screen videos on the external Cinema Display, when Firefox had many open tabs, when Spotlight indexing of a 1Tb external HD was going on, or when the battery was getting loaded.
A complete cache cleanup with Onyx did help briefly, but immediately after applying the latest firmware update, I was back to point zero.
Thanks to someone else's post, I followed another line of thought: the kernel_task process was maybe revving up because the CPU was getting too hot. It then took a bit more detective work and trial and error to figure that there was a vicious circle of sorts: kernel_task was going wild because it wanted to cool the CPU down, somehow, but its own hyperactivity was contributing to keeping the CPU overloaded.
The next logical step was to open the case (MBP switched off of course, and with due respect to all other precautions — iFixIt screwdriver kit highly recommended), only to find out that there was plenty of dust inside there, especially on both fans. I "scanned" the whole of it with the vacuum-cleaner's crevice nozzle, cautiously keeping it at a distance of 3-4 cm above the board (thus avoiding touching any electronic part). But I did apply the nozzle against the fans (one at a time), in such a way that the very suction had them rotate at high speed, and until all the dust was removed from them.
That was three weeks ago, and ever since my MBP has again been running like when it was born and purring like a happy kitten. Now the kernel_task process seldom runs over a single-digit percentage.
There seems to be a machine-specific aspect to all of this, though. Barely a meter away in this same office, there is a MBP, 3.06 Gb Intel Core 2 Duo, that is one year older, but otherwise with the same specs and setups, except for the fact that it has two external screens connected to it, not just one (but it's hardly ever used for heavy video streaming). Moreover, the resident cat shows a propensity to use its keyboard as a sleeping pad. We opened it too, and it had slightly less dust then the newer machine, still enough to make it worth vacuum-cleaning. Yet, this older MBP has never showed a sign of heating up and/or of CPU slowdown. Go figure…

Kernel_task uses over 250% CPU after water spillage

--MacBook Pro 13'' 2.3 GHz i5, 4GB RAM, Version 10.9.4, Early 2011 Model --
Hello,
So after a few droplets of water fell on the keyboard the computer has gone wild. Activity monitor shows kernel_task using over 250% with 80 threads, and obviously the computer is totally slowed and unresponsive. The fan is on non-stop. Multiple reboots and 3 days with it totally off has done nothing. However, in safe boot the computer runs normally, and kernel_task is around 2-3% with 77 threads. Any ideas here?
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Please make a Genius Appointment and take it in for service. ASAP!!

MacBook Pro Kernel_Task over 300% ; laptop running very slow

My new (4 week old) MacBook Pro suddenly this weekend started running very slow with the fan running constantly. I found the "kernel_task" was running the CPU over 300%. I tried various methods mentioned in different threads but nothing worked. I eventually went all the way to wiping the disk and reinstalling the OS. This has NOT fixed the problem. I do not know where to go next. I am posting a copy of the EtreCheck report I ran, and I am looking for any help.
The next step is taking this thing back to the Apple store. I love my MacBook, but not when it is not lagging like something running Windows ME. I expected more out of this machine than this.
EtreCheck Report:
EtreCheck version: 1.9.11 (43) - report generated June 5, 2014 at 9:53:46 PM CDT
Hardware Information:
          MacBook Pro (Retina, 13-inch, Late 2013)
          MacBook Pro - model: MacBookPro11,1
          1 2.6 GHz Intel Core i5 CPU: 2 cores
          8 GB RAM
Video Information:
          Intel Iris - VRAM: (null)
System Software:
          OS X 10.9.3 (13D65) - Uptime: 4 days 4:34:59
Disk Information:
          APPLE SSD SM0512F disk0 : (500.28 GB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    MacHD (disk0s2) / [Startup]: 499.42 GB (487.46 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
USB Information:
          Apple Internal Memory Card Reader
          Apple Inc. Apple Internal Keyboard / Trackpad
          Apple Inc. BRCM20702 Hub
                    Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information:
          Apple Inc. thunderbolt_bus
Gatekeeper:
          Mac App Store and identified developers
User Login Items:
          None
Internet Plug-ins:
          Default Browser: Version: 537 - SDK 10.9
          QuickTime Plugin: Version: 7.7.3
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
          AirPlay: Version: 2.0 - SDK 10.9
          AppleAVBAudio: Version: 203.2 - SDK 10.9
          iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins:
          Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
3rd Party Preference Panes:
          None
Time Machine:
          Time Machine not configured!
Top Processes by CPU:
               6%          WindowServer
               2%          hidd
               1%          Dock
               0%          com.apple.WebKit.Networking
               0%          mds_stores
Top Processes by Memory:
          188 MB          Safari
          165 MB          com.apple.WebKit.WebContent
          66 MB          WindowServer
          49 MB          Finder
          41 MB          com.apple.WebKit.Networking
Virtual Memory Information:
          4.96 GB          Free RAM
          1.64 GB          Active RAM
          387 MB          Inactive RAM
          849 MB          Wired RAM
          770 MB          Page-ins
          0 B          Page-outs

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 a low-voltage reading from the battery, 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 battery power, the fault is in the battery or the logic board. If it happens only on AC power, charging is causing the machine to heat up. That may be normal on 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.

IMac Computer using 10.7.5, running iTunes 11.1.5, and using an iPad 2 with os 7.1 . I have over 300 movies in my library and when I share using video on the iPad, the titles covers are all on the wrong movies. How do I fix this?

iMac Computer using 10.7.5, running iTunes 11.1.5, and using an iPad 2 with os 7.1 . I have over 300 movies in my library and when I share using video on the iPad, the titles covers are all on the wrong movies. How do I fix this?

Hi Michael,
I'm glad iTunes is working now! If you want to locate iTunes plug-ins on your computer, you can find them in the following locations (you may not have the iTunes Plug-ins folder if you do not have plug-ins):
Mac:
/Users/username/Library/iTunes/iTunes Plug-ins/
/Library/iTunes/iTunes Plug-ins/
One thing I also wanted to mention is that the "Users/username/Library" is hidden in Lion and Mountain Lion. You can access it using these steps:
OS X Mountain Lion: What is the Library folder?
The Library folder contains files used by OS X and your apps, including your personal fonts and preferences. The Library folder is hidden. If you need to open it, make sure you are in the Finder, hold down the Option key, and then choose Go > Library.
You can find the full article here:
OS X Mountain Lion: What is the Library folder?
http://support.apple.com/kb/PH11395
All the best,
Sheila M.

HT3275 My iMac harddrive only has about 100 gb of use on it. But my backup disk has over 300 gb used up on it. Why would this be?

My iMac hard drive only has about 100 gb of use on it. But my backup disk has over 300 gb of usage on it. For instance, my iphoto library shows about 13 gb of photos but the backup disc shows almost 20 gb of photos in the iphoto library. Why would this be?

Because you are using Time Machine which is an archiving backup utility. Any change that is made to a file will cause another fully copy of the file to be backed up. Over time a Time Machine backup will take up an entire hard drive no matter how large the drive may be.

"Report Crash" Using Over 80% of my CPU

My Macbook pro 2013 have been recently getting slower over time and now it has gotten really bad...
I've looked into it some and i have found out that in Activity Monitor this process called "Report Crash" is using over 80% of my cpu, and i have tried to quit the process but it just comes right back with in a matter of seconds.
Any ideas on how to fix this?
Specs on my macbook-
2013 model
4gb of ram
Intel core i5 2.5 Ghz
250gb hard drive
No ssd
Os-
OSX 10.8.5
Thanks in advance,
Thomas

When you have the problem, note the exact time: hour, minute, second.
If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above. Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first. Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V).
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. In most cases, a few dozen lines are more than enough. It is never necessary or helpful to post more than about 100 lines. "The more, the better" is not the rule here.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.

Premiere Pro using over 100% CPU

When I open up Premiere Pro, it is using about 6.5% CPU. I can cut, move around in the timeline and add effects ok. But when I play the video (even if its just one track with no effects) my computer starts running very hot and Premiere starts using over 500% CPU. the CPU cores heat to the 90s Celsius. Below are some specs, let me know if you need more to help answer. Thanks!!!
MacBook Pro
OS X 10.9.4
2.2 GHz Intel Core i7
Memory 4 GB 1333 MHz DDR3
Adobe Premiere Pro CS 6 - version 6.0.0
Here's the CPU and temps before Premiere plays anything...
Here's while it is playing through a video...

First of all, I strongly recommend that you update to 6.0.5. You'll reap the rewards of many bug fixes. I won't venture whether that alone will help with the temperature.
As you probably know, video processing is one of the most processor-intensive activities you can ask your computer to do. Exactly how hard your CPUs will be pushed depends on at least four factors:
The type of video, namely the codec. Those that use interframe compression are much more processor-intensive than intraframe compression.
the resolution, or pixel dimensions, of the video: higher resolution = more pixels = more work
the number of layers in your sequence. And be aware that if you're using nested sequences, you need to include all the layers in each of them.
effects. Some effects like scaling and color correction require a lot of processing.
One key data point you left out regarding your computer is the graphics card. A card that supports GPU processing will take a lot of the stress off of the CPU. From the system specs you provided, I gather you're on the Late 2011 MBP. If it has a 6750M or 6770M with 1GB of VRAM, then it's supported for CS6, but not if you have the 512MB version. (Here are system requirements for CS6: System requirements | Adobe Premiere Pro)

IMovie using 200-300% CPU when editing video. Why?

Hello everyone,
As the title says, I am experiencing iMovie using 200-300% of my Macbook Air's CPU. This occurs when I am editing the video, taking parts out and making sure everything look and sounds good.
Does anyone know of a way to stop iMovie from using this much CPU?
Any help will be appreciated,
Thank you.

having the same problem. tried deleting the preferences and now i can't even insert cutaways - all options disappeared from the pop-up menu, only leaving the option to replace or insert

HIGH IDLE CPU 95%+ WHILE NOTHING IS USING OVER 5% HELP!!!!

Macbook Pro Mid 2012
noticed my fan keeps coming on while preforming simple tasks, i've looked over forums and nothing seems
explain why my cpu idle usage is so low when my activity manager shows nothing using over 5%
can any body help me solve this problem.

Francis1992,
I would recomend trying an SMC reset, if your fans are running when you're not performing any intensive tasks. As for a high idle, that is normal. The idle percentage is how much CPU is available for your machine to use, so a high idle is actually a good thing! Check out this article for more info on how you can read activity monitor. Are you running Mavericks?

Motion is so slow and is using over 100% of my cpu?

hi i am just learning motion but am hitting a brick wall, any help would really appreciate it,
i am using motion 3 on a g5 dual 2.7 ghz with 5.5 gb of ram and have replaced the original graphics card with the ATI Radeon X800 XT,
it either quits when opening with a template or when i put an effect like echo on it will be so slow that i cant work, i checked on the activity monitor and it is using 103 % of the cpu, which also prevents me using any other program even safari.
what should i be doing as i thought the new graphics card would solve this ?
any ideas? i am hoping its just a matter of changing the settings or preferences somewhere so i can get maximum use out of this expensive new card?
cheers a million to any helpful solutions
simon

cheers for your reply,
okay so i will update the operating system( i think i have updated i just havent updated it in the forum
i have just put the graphics card in,(i havent noticed an improvement yet)
so maybe i need to look at the ati website and download the latest driver for the card.
i empted the ram preview and deleted the plist, this seemed to run better.
cheers again any more suggestions i really appreciate.
simon

ReportCrash using over 100% cpu after opening photoshop cs6

Currently running Mavericks on my macbook pro & just started noticing a problem. I'm sure its been there for a while, judging by past performance of photoshop, but just now caught it in activity monitor.
After I launch photoshop CS6, AM automatically shows ReportCrash as using upwards of 100% cpu, which explains why my computer seems to be dying when i'm working in the program.
As far as I could get with this problem on my own is checking concole to see what might be causing the process to appear. Not sure how to fix the problem though, which is why I come to the forums seeking guidance!
thanks in advance for any help!

Same thing is happening to me. Seems like it started about a week ago, fan is running a whole lot now. I'm not saying it's the cause but the "top" utility shows /System/Library/CoreServices/ReportCrash running at 103% - 105%. Weird.
Changes: In the past 10 days Software Update delivered new versions of OS X 10.9.2 and iTunes 11.1.5, and I installed and ran DiskAid 6.5.3 and evasi0n7-mac-1.0.7. Also, Chrome began to hang several times a day in the past week so I removed it and re-installed it, which seems to have solved that problem.
Anybody else hearing the fan a lot and seeing these 100%+ utilitizations lately?

Kernel_task is using over 300% of CPU

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