OS X & powermetrics

Powermetrics is a command that shows very specific information about what’s using your systems power. This makes it handy for troubleshooting what processes are taking up CPU, GPU, etc. To run a basic iteration of the command, we’re going to look at a usage summary report, using the –show-usage-summary option:

powermetrics -a --show-usage-summary

The output is as follows:

Machine model: MacBookAir6,2
OS version: 13A598

*** Sampled system activity (Sun Dec 1 23:04:13 2013 -0600) (5006.04ms elapsed) ***

*** Running tasks ***

Name PID CPU ms/s User% Deadlines (<2 ms, 2-5 ms) Wakeups (Intr, Pkg idle)
java 42754 541.18 12.92 0.00 0.00 12.39 0.00
kernel_task 0 452.41 0.00 141.63 0.00 386.13 0.00
blued 45 39.58 94.31 0.00 0.00 0.00 0.00
cfprefsd 48518 23.67 1.31 0.00 0.00 0.00 0.00
Knock 44431 16.41 90.28 0.00 0.00 0.00 0.00
com.apple.WebKit 16795 15.29 92.11 0.00 0.00 2.20 0.00
UserEventAgent 385 15.00 91.51 0.00 0.00 0.00 0.00
UserEventAgent 13 14.47 88.45 0.00 0.00 0.20 0.00
com.apple.WebKit 1048 11.61 95.80 0.00 0.00 2.40 0.00
com.apple.WebKit 94216 8.98 90.29 0.00 0.00 6.19 0.00
com.apple.WebKit 997 8.24 82.89 0.00 0.00 40.55 0.00
WindowServer 194 6.04 59.63 1.20 0.80 2.20 0.00
com.apple.WebKit 1154 5.52 68.49 0.00 0.00 42.15 0.00
hidd 90 5.49 72.13 0.00 0.00 0.00 0.00
com.apple.WebKit 1027 5.40 65.94 0.00 0.00 41.95 0.00
Terminal 44349 5.31 87.13 0.00 0.00 1.40 0.00
com.apple.WebKit 1054 5.01 67.33 0.00 0.00 41.35 0.00
prl_disp_service 369 3.15 97.11 0.00 0.00 2.20 0.00
distnoted 386 3.14 97.03 0.00 0.00 0.00 0.00
com.apple.WebKit 16780 1.86 60.00 0.00 0.00 16.78 0.00
com.apple.WebKit 55388 1.75 69.71 0.00 0.00 0.20 0.00
com.apple.WebKit 1505 1.71 87.44 0.00 0.00 3.00 0.00
Remote Desktop C 48336 1.69 32.47 0.00 0.00 98.88 0.00
Dropbox 508 1.36 79.03 0.00 0.00 0.60 0.00
distnoted 22 1.13 87.55 0.00 0.00 0.20 0.00
com.apple.WebKit 64843 1.07 93.07 0.00 0.00 1.00 0.00
powermetrics 48592 0.96 28.21 0.00 0.00 0.20 0.00
Safari 431 0.90 44.27 0.20 0.00 1.00 0.00
com.apple.WebKit 16799 0.88 90.05 0.00 0.00 1.60 0.00
com.apple.WebKit 93194 0.55 67.81 0.00 0.00 4.59 0.00
networkd 44 0.45 11.35 0.00 0.00 0.00 0.00
fseventsd 41 0.42 44.20 0.00 0.00 3.40 0.00
mds 81 0.37 44.11 0.00 0.00 2.20 0.00
com.apple.WebKit 1215 0.28 73.38 0.00 0.00 2.00 0.00
IPSecuritasDaemo 348 0.28 55.84 0.00 0.00 1.00 0.00
com.apple.WebKit 93143 0.27 68.84 0.00 0.00 2.00 0.00
PluginProcess 3573 0.26 77.60 0.00 0.00 1.40 0.00
com.apple.WebKit 16781 0.23 76.76 0.00 0.00 1.00 0.00
com.apple.WebKit 1679 0.23 69.04 0.00 0.00 1.60 0.00
usbmuxd 66 0.20 29.81 1.40 0.00 1.40 0.00
dbfseventsd 43670 0.19 26.12 0.00 0.00 0.00 0.00
Finder 434 0.18 22.45 0.00 0.00 0.00 0.00
com.apple.WebKit 16763 0.17 69.84 0.00 0.00 1.60 0.00
notifyd 17 0.16 21.54 0.00 0.00 0.00 0.00
galileod 107 0.15 41.56 0.00 0.00 1.00 0.00
dbfseventsd 43671 0.12 8.20 0.00 0.00 0.00 0.00
mds_stores 237 0.11 34.95 0.00 0.00 0.40 0.00
distnoted 585 0.09 67.90 0.00 0.00 0.00 0.00
com.apple.WebKit 33839 0.08 69.56 0.00 0.00 0.60 0.00
pacemaker 78 0.07 28.13 0.00 0.00 1.00 0.00
com.apple.WebKit 3572 0.05 67.81 0.00 0.00 0.40 0.00
Mail 428 0.05 65.29 0.00 0.00 0.40 0.00
dbfseventsd 43669 0.05 7.35 0.00 0.00 1.60 0.00
com.apple.MailSe 89428 0.04 57.83 0.00 0.00 2.00 0.00
loginwindow 84 0.02 65.43 0.00 0.00 0.00 0.00
com.apple.WebKit 33836 0.02 39.42 0.00 0.00 0.20 0.00
ALL_TASKS -2 1204.27 19.05 144.43 0.80 734.51 0.00

**** Battery and backlight usage ****

Backlight level: 563 (range 0-1024)

**** Network activity ****

out: 1.40 packets/s, 399.12 bytes/s
in: 1.40 packets/s, 265.28 bytes/s

**** Disk activity ****

read: 2.40 ops/s 291.28 KBytes/s
write: 4.00 ops/s 1867.16 KBytes/s

**** Interrupt distribution ****

CPU 0:
Vector 0x49(MacBookAir6,2): 68.92 interrupts/sec
Vector 0x92(IGPU): 113.46 interrupts/sec
Vector 0x94(XHC1): 14.18 interrupts/sec
Vector 0x97(ARPT): 5.79 interrupts/sec
Vector 0x9e(SSD0): 5.59 interrupts/sec
Vector 0xdd(TMR): 721.53 interrupts/sec
Vector 0xde(IPI): 4743.47 interrupts/sec
CPU 1:
Vector 0xdd(TMR): 136.44 interrupts/sec
Vector 0xde(IPI): 444.26 interrupts/sec
CPU 2:
Vector 0xdd(TMR): 718.93 interrupts/sec
Vector 0xde(IPI): 3874.52 interrupts/sec
CPU 3:
Vector 0xdd(TMR): 136.24 interrupts/sec
Vector 0xde(IPI): 170.79 interrupts/sec

**** Processor usage ****

Intel energy model derived package power (CPUs+GT+SA): 9.79W

LLC flushed residency: 0%

System Average frequency as fraction of nominal: 174.83% (2272.84 Mhz)
Package 0 C-state residency: 0.00% (C2: 0.00% C3: 0.00% C6: 0.00% C7: 0.00% C8: 0.00% C9: 0.00% C10: 0.00% )

Core 0 C-state residency: 1.95% (C3: 0.00% C6: 0.00% C7: 1.95% )

CPU 0 duty cycles/s: active/idle [< 16 us: 48421.92/53709.13] [< 32 us: 1616.05/1451.05] [< 64 us: 3725.90/942.06] [< 128 us: 2403.50/430.28] [< 256 us: 328.60/15.78] [< 512 us: 29.56/0.00] [< 1024 us: 8.19/0.00] [< 2048 us: 7.79/0.00] [< 4096 us: 2.60/0.00] [< 8192 us: 2.40/0.00] [< 16384 us: 0.60/0.00] [< 32768 us: 1.20/0.00]
CPU Average frequency as fraction of nominal: 174.99% (2274.86 Mhz)

CPU 1 duty cycles/s: active/idle [< 16 us: 59157.15/44087.35] [< 32 us: 565.72/11942.98] [< 64 us: 233.72/2441.65] [< 128 us: 106.07/1535.94] [< 256 us: 33.96/91.49] [< 512 us: 6.79/4.19] [< 1024 us: 2.00/4.19] [< 2048 us: 1.20/1.20] [< 4096 us: 3.40/2.00] [< 8192 us: 1.20/1.20] [< 16384 us: 0.60/0.40] [< 32768 us: 0.80/0.20]
CPU Average frequency as fraction of nominal: 174.88% (2273.49 Mhz)

Core 1 C-state residency: 1.63% (C3: 0.00% C6: 0.00% C7: 1.63% )

CPU 2 duty cycles/s: active/idle [< 16 us: 52772.26/58135.39] [< 32 us: 2563.70/1559.12] [< 64 us: 2825.19/779.46] [< 128 us: 2252.48/405.91] [< 256 us: 427.08/17.78] [< 512 us: 32.36/0.00] [< 1024 us: 10.39/0.00] [< 2048 us: 7.39/0.00] [< 4096 us: 3.20/0.00] [< 8192 us: 1.40/0.00] [< 16384 us: 1.40/0.00] [< 32768 us: 0.80/0.00]
CPU Average frequency as fraction of nominal: 174.76% (2271.94 Mhz)

CPU 3 duty cycles/s: active/idle [< 16 us: 45270.92/29302.61] [< 32 us: 507.99/9788.78] [< 64 us: 320.81/5017.34] [< 128 us: 85.10/1920.88] [< 256 us: 31.76/192.17] [< 512 us: 6.39/2.20] [< 1024 us: 2.40/4.79] [< 2048 us: 2.60/3.00] [< 4096 us: 4.99/2.00] [< 8192 us: 0.80/1.00] [< 16384 us: 0.40/0.00] [< 32768 us: 0.60/0.00]
CPU Average frequency as fraction of nominal: 174.46% (2267.93 Mhz)

**** GPU usage ****

GPU 0 name IntelIG
GPU 0 C-state residency: 99.69% (0.02%, 99.67%)
GPU 0 P-state residency: 1000MHz: 0.00%, 950MHz: 0.00%, 900MHz: 0.00%, 850MHz: 0.00%, 800MHz: 0.00%, 750MHz: 0.00%, 700MHz: 0.00%, 650MHz: 0.00%, 600MHz: 0.00%, 550MHz: 0.00%, 500MHz: 0.00%, 450MHz: 0.00%, 400MHz: 0.00%, 350MHz: 0.31%, 300MHz: 0.00%, 250MHz: 0.00%, 200MHz: 0.00%
GPU 0 average frequency as fraction of nominal (200.00Mhz): 0.55% (1.09Mhz)
GPU 0 GPU Busy 0.31%
GPU 0 FB Test Case 0.00%

*** Sampled system activity (Sun Dec 1 23:04:18 2013 -0600) (5004.69ms elapsed) ***

You can also hide CPU duty cycle data with the --hide-cpu-duty-cycle option, GPU duty cycle data with the --hide-gpu-duty-cycle option and show information about the entire uptime with --show-initial-usage. Overall, there's a good bit of information that can be obtained between powermetrics and systemstats, provided you have the time to parse the data and find the specific pieces of information that are pertinent to your debugging attempts.

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