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top -o cpu -pid 0 -> if kernel_task indicates heavy CPU use, you should consider applying kext changes for Mountain Lion 10.8.3
Source : “Fixing” kernel_task CPU Problems in MacOS Mountain Lion 10.8 [http://www.rdoxenham.com/?p=259]
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| arul:~ arul$ system_profiler -detailLevel mini | grep "Model Identifier:" | |
| Model Identifier: MacBookPro8,3 | |
| arul:~ arul$ sh | |
| sh-3.2$ kextstat | grep IOPlatformPluginFamily | |
| 84 5 0xffffff7f80dfa000 0xa000 0xa000 com.apple.driver.IOPlatformPluginFamily (5.3.0d51) <9 7 6 5 4 3> | |
| sh-3.2$ sudo su - | |
| Password: | |
| arul:~ root# cd /System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/PlugIns/ACPI_SMC_PlatformPlugin.kext/Contents/Resources/ | |
| arul:Resources root# ls | |
| MacBook1_1.plist MacBookAir2_1.plist MacBookPro3_1.plist MacBookPro7_1.plist Macmini3_1.plist iMac11_3.plist | |
| MacBook2_1.plist MacBookAir3_1.plist MacBookPro4_1.plist MacBookPro8_1.plist Macmini4_1.plist iMac12_1.plist | |
| MacBook3_1.plist MacBookAir3_2.plist MacBookPro5_1.plist MacBookPro8_2.plist Macmini5_1.plist iMac12_2.plist | |
| MacBook4_1.plist MacBookAir4_1.plist MacBookPro5_2.plist MacBookPro8_3.plist Macmini5_2.plist iMac8_1.plist | |
| MacBook5_1.plist MacBookAir4_2.plist MacBookPro5_3.plist MacPro1_1.plist Macmini5_3.plist iMac9_1.plist | |
| MacBook5_2.plist MacBookPro1_1.plist MacBookPro5_4.plist MacPro2_1.plist Xserve3_1.plist | |
| MacBook6_1.plist MacBookPro1_2.plist MacBookPro5_5.plist MacPro3_1.plist iMac10_1.plist | |
| MacBook7_1.plist MacBookPro2_1.plist MacBookPro6_1.plist MacPro4_1.plist iMac11_1.plist | |
| MacBookAir1_1.plist MacBookPro2_2.plist MacBookPro6_2.plist MacPro5_1.plist iMac11_2.plist | |
| arul:Resources root# ls | wc -l | |
| 50 | |
| arul:Resources root# ls -l | |
| total 1104 | |
| -rw-r--r-- 1 root wheel 7927 Jun 28 2012 MacBook1_1.plist | |
| -rw-r--r-- 1 root wheel 7927 Jun 28 2012 MacBook2_1.plist | |
| -rw-r--r-- 1 root wheel 13969 Jun 28 2012 MacBook3_1.plist | |
| -rw-r--r-- 1 root wheel 11661 Jun 28 2012 MacBook4_1.plist | |
| -rw-r--r-- 1 root wheel 7033 Jun 28 2012 MacBook5_1.plist | |
| -rw-r--r-- 1 root wheel 7460 Jun 28 2012 MacBook5_2.plist | |
| -rw-r--r-- 1 root wheel 7865 Jun 28 2012 MacBook6_1.plist | |
| -rw-r--r-- 1 root wheel 7813 Jun 28 2012 MacBook7_1.plist | |
| -rw-r--r-- 1 root wheel 17309 Jun 28 2012 MacBookAir1_1.plist | |
| -rw-r--r-- 1 root wheel 10949 Jun 28 2012 MacBookAir2_1.plist | |
| -rw-r--r-- 1 root wheel 13855 Jun 28 2012 MacBookAir3_1.plist | |
| -rw-r--r-- 1 root wheel 13856 Jun 28 2012 MacBookAir3_2.plist | |
| -rw-r--r-- 1 root wheel 18424 Jun 28 2012 MacBookAir4_1.plist | |
| -rw-r--r-- 1 root wheel 18424 Jun 28 2012 MacBookAir4_2.plist | |
| -rw-r--r-- 1 root wheel 11290 Jun 28 2012 MacBookPro1_1.plist | |
| -rw-r--r-- 1 root wheel 11290 Jun 28 2012 MacBookPro1_2.plist | |
| -rw-r--r-- 1 root wheel 11290 Jun 28 2012 MacBookPro2_1.plist | |
| -rw-r--r-- 1 root wheel 11290 Jun 28 2012 MacBookPro2_2.plist | |
| -rw-r--r-- 1 root wheel 14103 Jun 28 2012 MacBookPro3_1.plist | |
| -rw-r--r-- 1 root wheel 14303 Jun 28 2012 MacBookPro4_1.plist | |
| -rw-r--r-- 1 root wheel 7565 Jun 28 2012 MacBookPro5_1.plist | |
| -rw-r--r-- 1 root wheel 7565 Jun 28 2012 MacBookPro5_2.plist | |
| -rw-r--r-- 1 root wheel 8047 Jun 28 2012 MacBookPro5_3.plist | |
| -rw-r--r-- 1 root wheel 7592 Jun 28 2012 MacBookPro5_4.plist | |
| -rw-r--r-- 1 root wheel 7592 Jun 28 2012 MacBookPro5_5.plist | |
| -rw-r--r-- 1 root wheel 9029 Jun 28 2012 MacBookPro6_1.plist | |
| -rw-r--r-- 1 root wheel 9029 Jun 28 2012 MacBookPro6_2.plist | |
| -rw-r--r-- 1 root wheel 7485 Jun 28 2012 MacBookPro7_1.plist | |
| -rw-r--r-- 1 root wheel 13843 Jun 28 2012 MacBookPro8_1.plist | |
| -rw-r--r-- 1 root wheel 14330 Jun 28 2012 MacBookPro8_2.plist | |
| -rw-r--r-- 1 root wheel 14330 Jun 28 2012 MacBookPro8_3.plist | |
| -rw-r--r-- 1 root wheel 802 Jun 28 2012 MacPro1_1.plist | |
| -rw-r--r-- 1 root wheel 802 Jun 28 2012 MacPro2_1.plist | |
| -rw-r--r-- 1 root wheel 8765 Jun 28 2012 MacPro3_1.plist | |
| -rw-r--r-- 1 root wheel 6253 Jun 28 2012 MacPro4_1.plist | |
| -rw-r--r-- 1 root wheel 6300 Jun 28 2012 MacPro5_1.plist | |
| -rw-r--r-- 1 root wheel 7080 Jun 28 2012 Macmini3_1.plist | |
| -rw-r--r-- 1 root wheel 7028 Jun 28 2012 Macmini4_1.plist | |
| -rw-r--r-- 1 root wheel 15192 Jun 28 2012 Macmini5_1.plist | |
| -rw-r--r-- 1 root wheel 15195 Jun 28 2012 Macmini5_2.plist | |
| -rw-r--r-- 1 root wheel 15193 Jun 28 2012 Macmini5_3.plist | |
| -rw-r--r-- 1 root wheel 2569 Jun 28 2012 Xserve3_1.plist | |
| -rw-r--r-- 1 root wheel 7524 Jun 28 2012 iMac10_1.plist | |
| -rw-r--r-- 1 root wheel 6592 Jun 28 2012 iMac11_1.plist | |
| -rw-r--r-- 1 root wheel 6872 Jun 28 2012 iMac11_2.plist | |
| -rw-r--r-- 1 root wheel 6873 Jun 28 2012 iMac11_3.plist | |
| -rw-r--r-- 1 root wheel 6593 Jun 28 2012 iMac12_1.plist | |
| -rw-r--r-- 1 root wheel 6593 Jun 28 2012 iMac12_2.plist | |
| -rw-r--r-- 1 root wheel 11708 Jun 28 2012 iMac8_1.plist | |
| -rw-r--r-- 1 root wheel 7520 Jun 28 2012 iMac9_1.plist | |
| arul:Resources root# mv MacBookPro8_3.plist /Users/arul/ | |
| arul:Resources root# exit | |
| logout | |
| sh-3.2$ exit | |
| exit | |
| arul:~ arul$ |
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