Gather and display CPU usage statistics (divided into time spent in user mode and supervisor mode), timer and interrupt wakeup frequency (total and, for near-idle workloads, those that resulted in package C-state exits), and on supported platforms, interrupt frequencies (categorized by CPU number), package C-state statistics (an indication of the time the core complex + integrated graphics, if any, were in low-power idle states), as well as the average execution frequency for each CPU when not idle.
powermetrics [-i sample_interval] [-r order] [-t wakeup_cost]
The following command-line options are supported:
-h | --help show this message
-A | --show-all Enables all samplers and displays all the
available information for each sampler.
-a | --poweravg <N> display poweravg every N samples (0=disabled) [default: 10]
-b | --buffer-size <size> set output buffer size (0=none, 1=line)
-f | --format <format> display data in specified format [default: text]
-i | --sample-rate <N> sample every N ms (0=disabled) [default: 5000ms]
-n | --sample-count <N> obtain N periodic samples (-1=infinite) [default: -1]
-o | --output-file <file> output to file [default: stdout]
-r | --order <method> order process list using specified method [default: composite]
-s | --samplers <samplers> comma separated list of samplers and sampler groups
-t | --wakeup-cost <N> assume package idle wakeups have a CPU time
cost of N us when using hybrid sort orders
using idle wakeups with time-based metrics
--show-initial-usage print initial sample for entire uptime
--show-usage-summary print final usage summary when exiting
--show-extra-power-info unsupported power info (may change between releases)
--show-pstates show pstate distribution (XCPM only)
--show-plimits cpu limiting information
--show-cpu-qos show per cpu QOS breakdowns
--show-cpu-scalability show per cpu workload scalability
--show-hwp-capability show per cpu-thread HWP estimated efficient and guarateed frequencies (instantaneous)
--show-process-coalition group processes by coalitions and show per coalition information
--show-responsible-pid show responsible pid for xpc services and parent pid
--show-process-wait-times show per-process sfi wait time info
--show-process-qos-tiers show per-process QOS latency and throughput tiers
--show-process-io show per-process io information
--show-process-gpu show per-process gpu time
--show-process-netstats show per-process network information
--show-process-qos show QOS times aggregated by process
--show-process-energy show per-process energy impact number
This implicitly enables sampling of all the
above per-process statistics.
--show-process-samp-norm Show CPU time normailzed by the sample window.
--handle-invalid-values powermetrics will output invalid=true rather
than abort when it sees invalid values.
--hide-cpu-duty-cycle hide CPU duty cycle data
--unhide-info <samplers> comma separated list of samplers to unhide (backwards compatibility)
The following sort orders are supported by --order:
pid process identifier
wakeups total package idle wakeups (alias: -W)
cputime total CPU time used (alias: -C)
composite weighted hybrid of package idle
wakeups and CPU time used (alias: -O)
The following output formats are supported by --format:
text human-readable text output
plist machine-readable property list, NUL-separated
This tool also implements special behavior upon receipt of certain signals
to aid with the automated collection of data:
SIGINFO take an immediate sample
SIGIO flush any buffered output
SIGINT/SIGTERM/SIGHUP stop sampling and exit
The following samplers are supported by --samplers:
tasks per task cpu usage and wakeup stats
battery battery and backlight info
network network usage info
disk disk usage info
int_sources interrupt sources information
interrupts interrupt distribution
cpu_power c-state residency, power and frequency info
thermal thermal pressure notifications
sfi selective forced idle information
gpu_power gpu c-state residency, p-state residency and frequency info
gpu_agpm_stats Statistics reported by AGPM
smc SMC sensors
gpu_dcc_stats gpu duty cycle info
nvme_ssd NVMe power state information
io_throttle_ssd IO Throttling information
and the following sampler groups are supported by --samplers:
all tasks,battery,network,disk,int_sources,interrupts,cpu_power,thermal,sfi,gpu_power,gpu_agpm_stats,smc,gpu_dcc_stats,nvme_ssd,io_throttle_ssd
default tasks,battery,network,disk,interrupts,cpu_power,gpu_power,gpu_agpm_stats,smc,gpu_dcc_stats
Change the -i parameter to adjust the interval. 2000 = 2 seconds.
sudo powermetrics -i 2000 --samplers smc | grep 'CPU die temperature'
sudo powermetrics -i 2000 --samplers smc | grep 'GPU die temperature'
sudo powermetrics -i 2000 --samplers smc | grep 'Fan:'