[问题]
mac使用期间,发现有些程序运行不流畅,有点点卡顿时,
去看 活动监视器 中 内存占用中,
有个kernel_task
占用了1G多的内存:
想要搞清楚:
这个kernel_task是个什么东西
占用了1.2G内存,是否属于正常现象?
注:此处CPU占用率倒是正常的。
不过也去看了,CPU占用率,在5%前后:
[解决过程]
1.搜:
mac kernel_task
参考:
kernel_task high memory usage | Apple Support Communities
去看看:
/System/Library/Extensions
里面有几十个.kext
所以肯定不可能去删除这么多。。。
kernel_task 到底是个什么神奇的东东啊???,Mac OS X 讨论区-MacX.cn –
“直接升级会有这个进程,如果抹除重新安装就没有这个问题了。
抹盘安装也会有这个进程。新机器没有plist可以删,而且删除的话可能有其他风险。
去看看我的这里是否有:battery time remaining 2
此处没有这个程序:
其他也没看到异常。
去进入:
Macintosh HD-》系统-》资源库-》Extensions
搜索:
IOP
点击 Extensions
2.参考:
MAC解決kernel_task讓cpu突然飆高100%,150%的有效方式 | 計算0123456789
去看看:
mac系统版本:
OS X 10.11 EI Caption
对应的:
型号标识符: MacBookPro12,1
继续打开:
/System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/PlugIns
然后去:
[已解决]mac的finer中如何复制只读文件的文件名
拷贝到该文件名:
/System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/PlugIns/ACPI_SMC_PlatformPlugin.kext
然后进入:
/System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/PlugIns/ACPI_SMC_PlatformPlugin.kext/Contents
结果里面没有找到:
MacBookPro12,1
去看了看kextstat,输出一大堆:
licrifandeMacBook-Pro:PlugIns crifan$ kextstat Index Refs Address Size Wired Name (Version) UUID <Linked Against> 1 87 0xffffff7f80a43000 0x9c80 0x9c80 com.apple.kpi.bsd (15.0.0) 4A7D79EB-10A1-41B2-B33D-AF4D8D1BAEE5 2 8 0xffffff7f80dad000 0x3890 0x3890 com.apple.kpi.dsep (15.0.0) E34706C3-8575-4872-A703-81B59FBD936C 3 110 0xffffff7f80a04000 0x210a0 0x210a0 com.apple.kpi.iokit (15.0.0) F1416605-BC90-4460-BB51-2B08A72E327C 4 116 0xffffff7f80a26000 0xd000 0xd000 com.apple.kpi.libkern (15.0.0) 86328729-2A14-4BDC-BA8E-9757C9F2970D 5 103 0xffffff7f80a00000 0x3d50 0x3d50 com.apple.kpi.mach (15.0.0) B6CEFAC3-D3DD-4379-B7A2-FF5F725A8770 6 55 0xffffff7f80a33000 0x96d0 0x96d0 com.apple.kpi.private (15.0.0) 0B01C40B-49D3-4FDE-865A-90D1A70822FF 7 68 0xffffff7f80a3d000 0x58a0 0x58a0 com.apple.kpi.unsupported (15.0.0) 1BB512AE-2F62-43FE-84FA-4109DC5AD7D9 8 6 0xffffff7f80db4000 0x93000 0x93000 com.apple.kec.corecrypto (1.0) 09F272FD-0528-3F45-AACA-1893C398896D <7 6 5 4 3 1> 9 0 0xffffff7f80e86000 0xd000 0xd000 com.apple.kec.pthread (1) EAF1DACC-38A7-3C93-91E3-241D681EAF1C <7 6 5 4 1> 10 1 0xffffff7f80eaf000 0x9000 0x9000 com.apple.kec.Libm (1) B5782ABE-E8F8-381E-A51E-8D5F3ADA439F <4> 11 26 0xffffff7f811ba000 0x9000 0x9000 com.apple.iokit.IOACPIFamily (1.4) CBAE26D8-0ACB-3C1F-8347-FDCA67EC40B3 <7 6 4 3> 12 30 0xffffff7f80b2d000 0x30000 0x30000 com.apple.iokit.IOPCIFamily (2.9) 668E3DEE-F98E-3456-92D6-F4FEEA355A72 <7 6 5 4 3> 13 2 0xffffff7f82cca000 0x60000 0x60000 com.apple.driver.AppleACPIPlatform (4.0) 295F7A91-2DF7-3FFE-9550-A0C1A6F9D575 <12 11 7 6 5 4 3 1> 14 1 0xffffff7f8111b000 0xb000 0xb000 com.apple.driver.AppleFDEKeyStore (28.30) D6FD5533-2362-3320-A475-DFAF27DA24CF <8 7 6 5 4 3 1> 15 3 0xffffff7f814bc000 0x7000 0x7000 com.apple.iokit.IOReportFamily (31) 00ECF188-29A2-3C48-B4DD-B155077F7B3C <5 4 3> 16 7 0xffffff7f80a4d000 0x27000 0x27000 com.apple.iokit.IOStorageFamily (2.1) 956BA336-5C0A-37E9-B395-538D1BD95AC0 <7 6 5 4 3 1> 17 0 0xffffff7f815ab000 0x19000 0x19000 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也看不懂。。。
搜:
mac kernel_task too much memory
参考:
kernel_task high memory usage | Apple Support Communities
突然想起来了:
我最近是从OS X Yosemite升级到OS X EI Caption
但是好像是没有重启过Mac
所以:
去重启Mac试试,或许能解决问题?
CPU和内存占用还是比较多的。
参考:
What is kernel_task and why is it taking up so much memory? | MacRumors Forums
说是:
如果系统运行了:
adobe flash
Safari的ClickToFlash,Firefox的FlashBlock 或FlashBlock Youtube的HTML5视频播放器
则都可能会导致:
kernel_task的CPU和内存占用率较高
[总结]
目前,还是没有找到根本原因。
经过重启后,kernel_task的CPU和内存的占用率,稍微低了点,但也还是很高,内存占用1G左右。
据说,可能是和flash有关的东西(adobe flash,Safari的ClickToFlash,Firefox的FlashBlock 或FlashBlock Youtube的HTML5视频播放器)导致了kernel_task的资源消耗大的。但是未经证实。
暂时,就这么着吧,还是不清楚根本原因。
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