Tengo dos MacBooks, uno con una instalación fresca de OS X y otro con una instalación más antigua. El más antiguo tiene un kernel_task que ocupa 1,52 GB de RAM. El más nuevo, 416 MB. No son máquinas idénticas ni nada por el estilo, pero tengo curiosidad por saber la magnitud de la discrepancia y qué contribuye a ella. ¿Hay alguna manera de inspeccionar lo que comprende la huella de kernel_task, idealmente sin necesidad de desinstalar experimentalmente varias aplicaciones/servicios a la vez?
Lo he intentado:
$ kextstat
Index Refs Address Size Wired Name (Version) <Linked Against>
1 77 0xffffff7f80757000 0x686c 0x686c com.apple.kpi.bsd (12.6.0)
2 6 0xffffff7f80742000 0x46c 0x46c com.apple.kpi.dsep (12.6.0)
3 101 0xffffff7f80761000 0x1b7ec 0x1b7ec com.apple.kpi.iokit (12.6.0)
4 107 0xffffff7f8074d000 0x99f8 0x99f8 com.apple.kpi.libkern (12.6.0)
5 94 0xffffff7f80743000 0x88c 0x88c com.apple.kpi.mach (12.6.0)
6 41 0xffffff7f80744000 0x502c 0x502c com.apple.kpi.private (12.6.0)
7 64 0xffffff7f8074a000 0x23cc 0x23cc com.apple.kpi.unsupported (12.6.0)
8 0 0xffffff7f814b2000 0x41000 0x41000 com.apple.kec.corecrypto (1.0) <7 6 5 4 3 1>
9 22 0xffffff7f807f3000 0x9000 0x9000 com.apple.iokit.IOACPIFamily (1.4) <7 6 4 3>
10 31 0xffffff7f808b2000 0x29000 0x29000 com.apple.iokit.IOPCIFamily (2.8) <7 6 5 4 3>
11 2 0xffffff7f81e79000 0x5a000 0x5a000 com.apple.driver.AppleACPIPlatform (1.8) <10 9 7 6 5 4 3 1>
12 1 0xffffff7f80acf000 0xe000 0xe000 com.apple.driver.AppleKeyStore (28.21) <7 6 5 4 3 1>
13 5 0xffffff7f8077d000 0x25000 0x25000 com.apple.iokit.IOStorageFamily (1.8) <7 6 5 4 3 1>
14 0 0xffffff7f80e1b000 0x19000 0x19000 com.apple.driver.DiskImages (345) <13 7 6 5 4 3 1>
15 0 0xffffff7f81b60000 0x2e000 0x2e000 com.apple.driver.AppleIntelCPUPowerManagement (214.0.0) <7 6 5 4 3 1>
16 0 0xffffff7f8075e000 0x3000 0x3000 com.apple.security.TMSafetyNet (7) <7 6 5 4 2 1>
17 2 0xffffff7f80854000 0x4000 0x4000 com.apple.kext.AppleMatch (1.0.0d1) <4 1>
18 1 0xffffff7f80858000 0x11000 0x11000 com.apple.security.sandbox (220.4) <17 7 6 5 4 3 2 1>
19 0 0xffffff7f80869000 0x6000 0x6000 com.apple.security.quarantine (2.1) <18 17 7 6 5 4 2 1>
20 0 0xffffff7f81eea000 0x8000 0x8000 com.apple.nke.applicationfirewall (4.0.39) <7 6 5 4 3 1>
21 0 0xffffff7f81e4d000 0x3000 0x3000 com.apple.driver.AppleAPIC (1.7) <4 3>
22 3 0xffffff7f80d05000 0x4000 0x4000 com.apple.iokit.IOSMBusFamily (1.1) <5 4 3>
23 0 0xffffff7f81ed9000 0x7000 0x7000 com.apple.driver.AppleACPIEC (1.8) <22 11 9 5 4 3>
24 0 0xffffff7f81925000 0x4000 0x4000 com.apple.driver.AppleSMBIOS (1.9) <7 4 3>
25 0 0xffffff7f81bb0000 0x3000 0x3000 com.apple.driver.AppleHPET (1.8) <9 7 5 4 3>
26 6 0xffffff7f80add000 0x6d000 0x6d000 com.apple.iokit.IOHIDFamily (1.8.1) <12 7 6 5 4 3 2 1>
27 0 0xffffff7f81ee3000 0x4000 0x4000 com.apple.driver.AppleACPIButtons (1.8) <26 11 9 7 6 5 4 3 1>
28 0 0xffffff7f81951000 0x8000 0x8000 com.apple.driver.AppleRTC (1.5) <9 5 4 3 1>
29 1 0xffffff7f81e20000 0x5000 0x5000 com.apple.driver.AppleEFIRuntime (2.0) <7 6 5 4 3>
30 0 0xffffff7f8192b000 0x8000 0x8000 com.apple.driver.AppleSmartBatteryManager (161.0.0) <22 9 5 4 3 1>
31 0 0xffffff7f81e25000 0xa000 0xa000 com.apple.driver.AppleEFINVRAM (2.0) <29 7 6 5 4 3>
32 0 0xffffff7f81b5b000 0x3000 0x3000 com.apple.driver.AppleIntelCPUPowerManagementClient (214.0.0) <7 6 5 4 3 1>
33 15 0xffffff7f80a4e000 0x5e000 0x5e000 com.apple.iokit.IOUSBFamily (635.4.0) <10 7 5 4 3 1>
34 0 0xffffff7f80be7000 0x18000 0x18000 com.apple.driver.AppleUSBEHCI (621.4.6) <33 10 7 5 4 3 1>
35 0 0xffffff7f80b6d000 0x1d000 0x1d000 com.apple.driver.AppleUSBXHCI (635.4.0) <33 10 7 5 4 3 1>
36 2 0xffffff7f81024000 0x16000 0x16000 com.apple.iokit.IOAHCIFamily (2.5.1) <5 4 3 1>
37 0 0xffffff7f81e52000 0x1a000 0x1a000 com.apple.driver.AppleAHCIPort (2.6.6) <36 10 5 4 3 1>
38 0 0xffffff7f81938000 0x12000 0x12000 com.apple.driver.AppleSDXC (1.4.3) <13 10 5 4 3 1>
39 3 0xffffff7f80a0f000 0x2b000 0x2b000 com.apple.iokit.IONetworkingFamily (3.0) <7 6 5 4 3 1>
40 1 0xffffff7f8106e000 0x68000 0x68000 com.apple.iokit.IO80211Family (530.5) <39 7 6 5 4 3 1>
41 0 0xffffff7f810dd000 0x1f9000 0x1f9000 com.apple.driver.AirPort.Brcm4331 (615.20.17) <40 39 10 7 5 4 3 1>
42 1 0xffffff7f80acc000 0x3000 0x3000 com.apple.iokit.IOUSBUserClient (630.4.4) <33 7 5 4 3 1>
43 0 0xffffff7f80bcb000 0x15000 0x15000 com.apple.driver.AppleUSBHub (635.4.0) <33 5 4 3 1>
44 4 0xffffff7f80c1c000 0xbb000 0xbb000 com.apple.iokit.IOThunderboltFamily (2.7.7) <5 4 3 1>
45 0 0xffffff7f81863000 0x16000 0x16000 com.apple.driver.AppleThunderboltNHI (1.9.2) <44 10 9 5 4 3 1>
46 0 0xffffff7f8104a000 0x17000 0x17000 com.apple.iokit.IOAHCIBlockStorage (2.3.5) <36 13 6 5 4 3 1>
47 0 0xffffff7f817a6000 0x3000 0x3000 com.apple.driver.XsanFilter (404) <13 5 4 3 1>
48 0 0xffffff7f81502000 0x9000 0x9000 com.apple.BootCache (34) <7 6 5 4 3 1>
49 0 0xffffff7f81e11000 0x4000 0x4000 com.apple.AppleFSCompression.AppleFSCompressionTypeZlib (1.0.0d1) <6 4 3 2 1>
50 0 0xffffff7f81e17000 0x3000 0x3000 com.apple.AppleFSCompression.AppleFSCompressionTypeDataless (1.0.0d1) <7 6 4 3 2 1>
52 1 0xffffff7f80b66000 0x7000 0x7000 com.apple.driver.AppleUSBComposite (621.4.0) <33 4 3 1>
53 0 0xffffff7f813cf000 0xc4000 0xc4000 com.apple.driver.CoreStorage (296.18.2) <13 7 6 5 4 3 1>
54 0 0xffffff7f80bc4000 0x7000 0x7000 com.apple.driver.AppleUSBMergeNub (621.4.6) <52 33 4 3 1>
56 3 0xffffff7f80b5d000 0x9000 0x9000 com.apple.iokit.IOUSBHIDDriver (623.4.0) <33 26 5 4 3 1>
57 0 0xffffff7f817da000 0x4000 0x4000 com.apple.driver.AppleUSBTCKeyboard (237.1) <56 33 26 7 6 5 4 3 1>
59 0 0xffffff7f817e5000 0x13000 0x13000 com.apple.driver.AppleUSBMultitouch (237.3) <56 33 26 6 5 4 3 1>
60 0 0xffffff7f81855000 0x5000 0x5000 com.apple.driver.AppleThunderboltPCIDownAdapter (1.3.2) <44 10 5 4 3>
61 1 0xffffff7f8187d000 0x9000 0x9000 com.apple.driver.AppleThunderboltDPAdapterFamily (2.5.0) <44 10 9 5 4 3>
62 0 0xffffff7f81886000 0x6000 0x6000 com.apple.driver.AppleThunderboltDPInAdapter (2.5.0) <61 44 10 9 5 4 3>
63 0 0xffffff7f817e0000 0x3000 0x3000 com.apple.driver.AppleUSBTCButtons (237.1) <56 33 26 7 6 5 4 3 1>
64 15 0xffffff7f80dc4000 0x38000 0x38000 com.apple.iokit.IOGraphicsFamily (2.3.7) <10 7 5 4 3>
65 2 0xffffff7f81914000 0xe000 0xe000 com.apple.driver.AppleSMBusController (1.0.11d1) <22 10 9 5 4 3>
66 0 0xffffff7f819bb000 0xd000 0xd000 com.apple.driver.AppleMCCSControl (1.1.11) <65 64 10 9 7 5 4 3 1>
67 8 0xffffff7f80e07000 0x12000 0x12000 com.apple.iokit.IONDRVSupport (2.3.7) <64 10 7 5 4 3>
68 1 0xffffff7f81df1000 0x5000 0x5000 com.apple.driver.AppleBacklightExpert (1.0.4) <67 64 10 5 4 3>
69 0 0xffffff7f81e45000 0x5000 0x5000 com.apple.driver.AppleBacklight (170.3.5) <68 67 64 10 5 4 3>
70 2 0xffffff7f81be1000 0xc000 0xc000 com.apple.iokit.IOHDAFamily (2.4.7fc4) <5 4 3 1>
71 1 0xffffff7f81c18000 0x19000 0x19000 com.apple.driver.AppleHDAController (2.4.7fc4) <70 64 10 7 6 5 4 3 1>
72 0 0xffffff7f81ae6000 0x61000 0x61000 com.apple.driver.AppleIntelFramebufferCapri (8.1.6) <64 10 9 7 6 5 4 3 1>
73 5 0xffffff7f80d74000 0xa000 0xa000 com.apple.driver.IOPlatformPluginFamily (5.4.1d13) <9 7 6 5 4 3>
74 5 0xffffff7f807fc000 0xf000 0xf000 com.apple.driver.AppleSMC (3.1.5d4) <9 7 5 4 3>
75 1 0xffffff7f80d7e000 0xe000 0xe000 com.apple.driver.X86PlatformPlugin (1.0.0) <74 73 33 9 7 6 5 4 3 1>
78 1 0xffffff7f81ddd000 0x3000 0x3000 com.apple.driver.AppleGraphicsControl (3.4.5) <67 64 10 9 7 5 4 3 1>
79 0 0xffffff7f81de0000 0xc000 0xc000 com.apple.driver.ApplePolicyControl (3.4.5) <78 67 64 10 9 7 5 4 3 1>
80 0 0xffffff7f813c9000 0x5000 0x5000 com.apple.Dont_Steal_Mac_OS_X (7.0.0) <74 7 4 3 1>
81 2 0xffffff7f80efb000 0x9a000 0x9a000 com.apple.iokit.IOBluetoothFamily (4.1.7f5) <33 7 5 4 3 1>
82 0 0xffffff7f80cf1000 0x12000 0x12000 com.apple.iokit.IOSurface (86.0.4) <7 5 4 3 1>
83 1 0xffffff7f81a27000 0x4b000 0x4b000 com.apple.iokit.IOAcceleratorFamily (74.18) <67 64 10 7 5 4 3 1>
84 0 0xffffff7f81a7d000 0x49000 0x49000 com.apple.driver.AppleIntelHD4000Graphics (8.1.6) <83 67 64 10 7 5 4 3 1>
85 0 0xffffff7f80d94000 0x3000 0x3000 com.apple.driver.AppleSMCPDRC (1.0.0) <73 10 6 4 3>
87 0 0xffffff7f80a41000 0x7000 0x7000 com.apple.iokit.IOUserEthernet (1.0.0d1) <39 6 5 4 3 1>
88 2 0xffffff7f80eb6000 0xe000 0xe000 com.apple.kext.OSvKernDSPLib (1.12) <5 4>
89 5 0xffffff7f80ec4000 0x2f000 0x2f000 com.apple.iokit.IOAudioFamily (1.9.2fc7) <88 5 4 3 1>
90 1 0xffffff7f81c31000 0xba000 0xba000 com.apple.driver.DspFuncLib (2.4.7fc4) <89 88 6 5 4 3 1>
91 0 0xffffff7f81cf4000 0x8b000 0x8b000 com.apple.driver.AppleHDA (2.4.7fc4) <90 89 71 70 67 64 6 5 4 3 1>
94 0 0xffffff7f8080d000 0x7000 0x7000 com.apple.driver.SMCMotionSensor (3.0.3d1) <74 5 4 3>
95 0 0xffffff7f81911000 0x2000 0x2000 com.apple.driver.AppleSMBusPCI (1.0.11d1) <10 5 4 3>
96 0 0xffffff7f819f2000 0x3000 0x3000 com.apple.driver.AppleLPC (1.6.3) <73 10 5 4 3>
97 0 0xffffff7f81bf0000 0x16000 0x16000 com.apple.driver.AppleMikeyDriver (2.4.7fc4) <65 9 5 4 3 1>
98 1 0xffffff7f80fca000 0x1b000 0x1b000 com.apple.iokit.IOBluetoothHostControllerUSBTransport (4.1.7f5) <33 10 9 7 5 4 3 1>
99 0 0xffffff7f80fe5000 0x8000 0x8000 com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport (4.1.7f5) <98 33 10 9 7 5 4 3>
102 0 0xffffff7f817fb000 0x5000 0x5000 com.apple.driver.AppleUpstreamUserClient (3.5.12) <64 10 9 7 5 4 3 1>
103 0 0xffffff7f81909000 0x5000 0x5000 com.apple.driver.AppleSMCLMU (2.0.3d0) <74 64 5 4 3>
104 0 0xffffff7f819b0000 0x3000 0x3000 com.apple.driver.AppleMikeyHIDDriver (124) <26 7 4 3 1>
105 1 0xffffff7f80d0e000 0xe000 0xe000 com.apple.iokit.IOSerialFamily (10.0.6) <7 6 5 4 3 1>
106 0 0xffffff7f80ea6000 0xa000 0xa000 com.apple.iokit.IOBluetoothSerialManager (4.1.7f5) <105 7 5 4 3 1>
107 0 0xffffff7f80fb5000 0x9000 0x9000 com.apple.driver.IOBluetoothA2DPAudioDriver (4.1.7f5) <89 81 5 4 3 1>
108 0 0xffffff7f80fa4000 0xa000 0xa000 com.apple.driver.IOBluetoothSCOAudioDriver (4.1.7f5) <89 81 5 4 3>
109 0 0xffffff7f81518000 0x5000 0x5000 com.apple.driver.AudioAUUC (1.60) <89 64 10 9 7 5 4 3 1>
110 0 0xffffff7f80d8c000 0x6000 0x6000 com.apple.driver.X86PlatformShim (1.0.0) <75 74 73 7 4 3>
111 0 0xffffff7f81dc3000 0x12000 0x12000 com.apple.driver.AGPM (100.13.14) <73 67 64 10 5 4 3>
112 0 0xffffff7f819a9000 0x4000 0x4000 com.apple.driver.ApplePlatformEnabler (2.0.7d2) <7 5 4 3>
113 0 0xffffff7f80870000 0x2b000 0x2b000 com.apple.iokit.IOSCSIArchitectureModelFamily (3.5.6) <5 4 3 1>
114 0 0xffffff7f81f07000 0x12000 0x12000 com.intel.kext.intelhaxm (1.1.1) <7 5 4 3 1>
115 2 0xffffff7f80817000 0x5000 0x5000 com.apple.kext.triggers (1.0) <7 6 5 4 3 1>
116 0 0xffffff7f8150d000 0x9000 0x9000 com.apple.filesystems.autofs (3.0) <115 7 6 5 4 3 1>
117 3 0xffffff7f81f19000 0x58000 0x58000 org.virtualbox.kext.VBoxDrv (4.3.22) <7 5 4 3 1>
118 0 0xffffff7f81f71000 0x8000 0x8000 org.virtualbox.kext.VBoxUSB (4.3.22) <117 42 33 7 5 4 3 1>
119 0 0xffffff7f81f79000 0x5000 0x5000 org.virtualbox.kext.VBoxNetFlt (4.3.22) <117 7 5 4 3 1>
120 0 0xffffff7f81f7e000 0x6000 0x6000 org.virtualbox.kext.VBoxNetAdp (4.3.22) <117 5 4 1>
124 0 0xffffff7f81f8d000 0xd000 0xd000 com.apple.nke.asp_tcp (7.1.0) <7 6 5 4 3 1>
125 1 0xffffff7f81f9a000 0x11000 0x11000 com.apple.security.SecureRemotePassword (1.0) <4 1>
126 0 0xffffff7f81fab000 0x4f000 0x4f000 com.apple.filesystems.afpfs (10.0) <125 7 6 5 4 3 1>
127 0 0xffffff7f81ffa000 0x33000 0x33000 com.apple.filesystems.smbfs (1.8.4) <115 7 6 5 4 3 1>
$ kextstat | grep -v com.apple
Index Refs Address Size Wired Name (Version) <Linked Against>
114 0 0xffffff7f81f07000 0x12000 0x12000 com.intel.kext.intelhaxm (1.1.1) <7 5 4 3 1>
117 3 0xffffff7f81f19000 0x58000 0x58000 org.virtualbox.kext.VBoxDrv (4.3.22) <7 5 4 3 1>
118 0 0xffffff7f81f71000 0x8000 0x8000 org.virtualbox.kext.VBoxUSB (4.3.22) <117 42 33 7 5 4 3 1>
119 0 0xffffff7f81f79000 0x5000 0x5000 org.virtualbox.kext.VBoxNetFlt (4.3.22) <117 7 5 4 3 1>
120 0 0xffffff7f81f7e000 0x6000 0x6000 org.virtualbox.kext.VBoxNetAdp (4.3.22) <117 5 4 1>
La entrada más grande es la del Aeropuerto, que tiene un tamaño de 2068480 bytes (son bytes según man kextstat
), es decir, no es grande.