How can I fix kernel task from using 300% of my CPU?
Everytime I disconnect my MacBook Pro from the wall, Kernel Task uses 300% or more of my CPU and stays that way until I connect the power. I've tryed resetting the System Management Controller, restarting the computer, logging in to another account, and deleted all "bad" files (problem files I've found out via Google). Going to Safe Mode does remove this problem, so it's maybe a program error?
The most likely reason for it is that the battery needs to be replaced.
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If you have recently had an iPhone stolen or lost, you may find the following article helpful:
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http://support.apple.com/kb/ht5668
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According to your post, my understanding is that you want to move a task from one summary task to another in the same task list.
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My kernel task is using 400% of my CPU
My coMputer is very slow, i need help. I saw the kernel task and is using yhe 400% of my CPU.
Hardware Information:
MacBook Pro (13-inch, Mid 2012)
MacBook Pro - model: MacBookPro9,2
1 2.5 GHz Intel Core i5 CPU: 2 cores
4 GB RAM
Video Information:
Intel HD Graphics 4000 - VRAM: 1024 MB
System Software:
OS X 10.9.2 (13C64) - Uptime: 0 days 0:5:35
Disk Information:
APPLE HDD HTS547550A9E384 disk0 : (500.11 GB)
EFI (disk0s1) <not mounted>: 209.7 MB
MacBokk Pro CJ4LV4R3z (disk0s2) / [Startup]: 499.25 GB (473.36 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
MATSHITADVD-R UJ-8A8
USB Information:
Apple Computer, Inc. IR Receiver
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. FaceTime HD Camera (Built-in)
FireWire Information:
Thunderbolt Information:
Apple Inc. thunderbolt_bus
Launch Daemons:
[System] com.adobe.fpsaud.plist 3rd-Party support link
User Login Items:
iTunesHelper
Internet Plug-ins:
FlashPlayer-10.6: Version: 12.0.0.77 - SDK 10.6 3rd-Party support link
Flash Player: Version: 12.0.0.77 - SDK 10.6 3rd-Party support link
QuickTime Plugin: Version: 7.7.3
Default Browser: Version: 537 - SDK 10.9
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:
Flash Player 3rd-Party support link
Old Applications:
None
Time Machine:
Time Machine not configured!
Top Processes by CPU:
18% com.apple.WebKit.Networking
13% syncdefaultsd
7% WindowServer
5% com.apple.WebKit.WebContent
4% mdworker
Top Processes by Memory:
98 MB Safari
94 MB com.apple.WebKit.WebContent
33 MB Dock
33 MB WindowServer
29 MB EtreCheck
Virtual Memory Information:
2.47 GB Free RAM
890 MB Active RAM
130 MB Inactive RAM
543 MB Wired RAM
191 MB Page-ins
0 B Page-outsThe 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
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How can I get ITunes to stop using 100% of my CPU system resources
When ITunes is up, it uses 100% of my CPU resources, making everything else operate at a snail's pace. I'm not even doing anything with ITunes, but it still seems to hog my machine, a desktop computer running WIndows XP. (When Itunes is closed CPU usage goes down to 4%-25% or thereabouts on average.)
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Go to command Prompt -
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(Win XP SP2 & above) - START/ALL PROGRAMS/ACCESSORIES/Command Prompt
In the "Command Prompt" screen, type in
netsh winsock reset
Hit "ENTER" key
Restart your computer.
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Still no events and tasks are available from the deleted calendar.
The calendar is now available in the Calendar tab.To view TM backups from a different Mac, see item #17 of the of the Frequently Asked Questions *User Tip* at the top of the +Time Machine+ forum.
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select
SUM(NET_AMOUNT)
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SUM(TAX_AMOUNT)
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as total from ledger left join alloc on ledger.trxid=alloc.trxid where
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net and tax are in the ledger and allocated is in the alloc table. Sometimes the total of the amount (net+tax) is greater than the allocated so I need to retrieve all the rows where allocated is null or tot is greater than allocated.
It's possible without CTE?
ThanksResolved.
SUM(NET_AMOUNT)
as net,
SUM(TAX_AMOUNT)
as tax,
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