cpupower/man/cpupower-monitor.1

1 .TH CPUPOWER\-MONITOR "1" "22/02/2011" "" "cpupower Manual"
3 cpupower\-monitor \- Report processor frequency and idle statistics
6 .B cpupower monitor
7 .RB "\-l"
9 .B cpupower monitor
10 .RB [ -c ] [ "\-m <mon1>," [ "<mon2>,..." ] ]
11 .RB [ "\-i seconds" ]
13 .B cpupower monitor
14 .RB [ -c ][ "\-m <mon1>," [ "<mon2>,..." ] ]
18 \fBcpupower-monitor \fP reports processor topology, frequency and idle power
22 \fBcpupower-monitor \fP implements independent processor sleep state and
24 directly reading out hardware registers. Use \-l to get an overview which are
29 \-l
31 List available monitors on your system. Additional details about each monitor
35 The name in quotation marks which can be passed to the \-m parameter.
37 The number of different counters the monitor supports in brackets.
46 [T] \-> Thread
48 [C] \-> Core
50 [P] \-> Processor Package (Socket)
52 [M] \-> Machine/Platform wide counter
57 \-m <mon1>,<mon2>,...
59 Only display specific monitors. Use the monitor string(s) provided by \-l option.
62 \-i seconds
67 \-c
70 This could be needed for the Idle_Stats monitor when no other MSR based
71 monitor (has to be run on the core that is measured) is run in parallel.
74 -account its cpuidle (C-state) information before reading the
85 .SH MONITOR DESCRIPTIONS
104 May work poorly on Linux-2.6.20 through 2.6.29, as the \fBacpi-cpufreq \fP
131 power state got entered at least once during measure time.
132 Being able to enter NBP1 state also depends on graphics power management.
134 power management is working as expected.
138 cpupower monitor -l" may show:
140 Monitor "Mperf" (3 states) \- Might overflow after 922000000 s
144 Monitor "Idle_Stats" (3 states) \- Might overflow after 4294967295 s
149 cpupower monitor \-m "Idle_Stats,Mperf" scp /tmp/test /nfs/tmp
151 Monitor the scp command, show both Mperf and Idle_Stats states counter
159 cpupower monitor cat /dev/zero >/dev/null
163 shell script. Hit CTRL\-c to terminate the command and get the measure output
171 https://www.intel.com/content/www/us/en/gaming/resources/turbo-boost.html
173 "Power Management - Technology Overview"
176 "Intel® 64 and IA-32 Architectures Software Developer's Manual