turbostat(category11-mail-server.html) - phpMan

TURBOSTAT(8)                System Manager's Manual               TURBOSTAT(8)
NAME
       turbostat - Report processor frequency and idle statistics
SYNOPSIS
       turbostat [Options] command
       turbostat [Options] [--interval seconds]
DESCRIPTION
       turbostat  reports processor topology, frequency, idle power-state sta-
       tistics, temperature and power on X86 processors.  There are  two  ways
       to invoke turbostat.  The first method is to supply a command, which is
       forked and statistics are printed in one-shot upon its completion.  The
       second method is to omit the command, and turbostat displays statistics
       every 5 seconds interval.  The 5-second interval can be  changed  using
       the --interval option.
       Some information is not available on older processors.
   Options
       Options  can be specified with a single or double '-', and only as much
       of the option name as necessary to disambiguate it from others is  nec-
       essary.  Note that options are case-sensitive.
       --add attributes add column with counter having specified 'attributes'.
       The 'location' attribute is required, all others are optional.
            location: {msrDDD | msr0xXXX | /sys/path...}
                 msrDDD is a decimal offset, eg. msr16
                 msr0xXXX is a hex offset, eg. msr0x10
                 /sys/path... is an absolute path to a sysfs attribute
            scope: {cpu | core | package}
                 sample and print the counter for every cpu, core, or package.
                 default: cpu
            size: {u32 | u64 }
                 MSRs are read as 64-bits, u32 truncates the displayed value to 32-bits.
                 default: u64
            format: {raw | delta | percent}
                 'raw' shows the MSR contents in hex.
                 'delta' shows the difference in values during the measurement interval.
                 'percent' shows the delta as a percentage of the cycles elapsed.
                 default: delta
            name: "name_string"
                 Any string that does not match a key-word above is used
                 as the column header.
       --cpu cpu-set limit output to system summary plus  the  specified  cpu-
       set.  If cpu-set is the string "core", then the system summary plus the
       first CPU in each core are printed -- eg. subsequent  HT  siblings  are
       not  printed.   Or  if cpu-set is the string "package", then the system
       summary plus the first CPU in each package is printed.  Otherwise,  the
       system summary plus the specified set of CPUs are printed.  The cpu-set
       is ordered from low to high, comma delimited with ".." and "-"  permit-
       ted to denote a range. eg. 1,2,8,14..17,21-44
       --hide  column  do  not  show  the  specified built-in columns.  May be
       invoked multiple times, or with a comma-separated list of column names.
       --enable column show the specified built-in columns, which  are  other-
       wise  disabled,  by default.  Currently the only built-in counters dis-
       abled  by  default  are  "usec",  "Time_Of_Day_Seconds",   "APIC"   and
       "X2APIC".  The column name "all" can be used to enable all disabled-by-
       default built-in counters.
       --show column show only the specified built-in columns.  May be invoked
       multiple times, or with a comma-separated list of column names.
       --show  CATEGORY  --hide  CATEGORY   Show and hide also accept a single
       CATEGORY of columns: "all", "topology", "idle",  "frequency",  "power",
       "sysfs", "other".
       --Dump displays the raw counter values.
       --quiet  Do not decode and print the system configuration header infor-
       mation.
       --interval seconds overrides the default 5.0 second measurement  inter-
       val.
       --num_iterations num number of the measurement iterations.
       --out  output_file  turbostat  output  is written to the specified out-
       put_file.  The file is truncated if it already exists, and it  is  cre-
       ated if it does not exist.
       --help displays usage for the most common parameters.
       --Joules displays energy in Joules, rather than dividing Joules by time
       to print power in Watts.
       --list display column header names available  for  use  by  --show  and
       --hide, then exit.
       --Summary limits output to a 1-line System Summary for each interval.
       --TCC temperature sets the Thermal Control Circuit temperature for sys-
       tems which do not export that value.  This is used for making sense  of
       the  Digital  Thermal  Sensor  outputs,  as they return degrees Celsius
       below the TCC activation temperature.
       --version displays the version.
       The command parameter forks command, and upon its  exit,  displays  the
       statistics gathered since it was forked.
ROW DESCRIPTIONS
       The  system  configuration dump (if --quiet is not used) is followed by
       statistics.  The first row of the statistics labels the content of each
       column  (below).   The  second  row of statistics is the system summary
       line.  The system summary line has a '-' in the columns for  the  Pack-
       age, Core, and CPU.  The contents of the system summary line depends on
       the type of column.  Columns that count items (eg. IRQ)  show  the  sum
       across all CPUs in the system.  Columns that show a percentage show the
       average across all CPUs in the system.  Columns that dump raw MSR  val-
       ues  simply  show 0 in the summary.  After the system summary row, each
       row describes a specific Package/Core/CPU.   Note  that  if  the  --cpu
       parameter is used to limit which specific CPUs are displayed, turbostat
       will still collect statistics for all CPUs in the system and will still
       show the system summary for all CPUs in the system.
COLUMN DESCRIPTIONS
       usec  For  each  CPU, the number of microseconds elapsed during counter
       collection, including thread migration -- if any.  This counter is dis-
       abled  by default, and is enabled with "--enable usec", or --debug.  On
       the summary row, usec refers to the total elapsed time to  collect  the
       counters on all cpus.
       Time_Of_Day_Seconds  For  each  CPU,  the  gettimeofday(2)  value (sec-
       onds.subsec since Epoch)  when  the  counters  ending  the  measurement
       interval  were  collected.  This column is disabled by default, and can
       be enabled with "--enable Time_Of_Day_Seconds" or  "--debug".   On  the
       summary row, Time_Of_Day_Seconds refers to the timestamp following col-
       lection of counters on the last CPU.
       Core processor core number.  Note that multiple CPUs per core  indicate
       support for Intel(R) Hyper-Threading Technology (HT).
       CPU Linux CPU (logical processor) number.  Yes, it is okay that on many
       systems the CPUs are not listed in numerical order  --  for  efficiency
       reasons,  turbostat  runs  in  topology  order,  so  HT siblings appear
       together.
       Package processor package number -- not present on systems with a  sin-
       gle processor package.
       Avg_MHz  number  of cycles executed divided by time elapsed.  Note that
       this includes idle-time when 0 instructions are executed.
       Busy% percent  of  the  measurement  interval  that  the  CPU  executes
       instructions, aka. % of time in "C0" state.
       Bzy_MHz  average  clock  rate  while  the CPU was not idle (ie. in "c0"
       state).
       TSC_MHz average MHz that the TSC ran during the entire interval.
       IRQ The number of interrupts serviced by that CPU during  the  measure-
       ment interval.  The system total line is the sum of interrupts serviced
       across all CPUs.  turbostat parses /proc/interrupts  to  generate  this
       summary.
       SMI The number of System Management Interrupts  serviced CPU during the
       measurement interval.  While this counter is actually per-CPU, SMI  are
       triggered  on  all processors, so the number should be the same for all
       CPUs.
       C1, C2, C3... The number times Linux requested  the  C1,  C2,  C3  idle
       state  during  the measurement interval.  The system summary line shows
       the sum  for  all  CPUs.   These  are  C-state  names  as  exported  in
       /sys/devices/system/cpu/cpu*/cpuidle/state*/name.   While  their  names
       are generic, their attributes are processor specific. They  the  system
       description  section  of  output  shows  what MWAIT sub-states they are
       mapped to on each system.
       C1%, C2%, C3% The residency percentage that  Linux  requested  C1,  C2,
       C3....   The  system  summary is the average of all CPUs in the system.
       Note that these are software, reflecting what was requested.  The hard-
       ware counters reflect what was actually achieved.
       CPU%c1,  CPU%c3,  CPU%c6, CPU%c7 show the percentage residency in hard-
       ware core idle states.  These numbers are from hardware residency coun-
       ters.
       CoreTmp  Degrees  Celsius reported by the per-core Digital Thermal Sen-
       sor.
       PkgTmp Degrees Celsius reported by the per-package Package Thermal Mon-
       itor.
       GFX%rc6  The  percentage  of  time the GPU is in the "render C6" state,
       rc6,      during       the       measurement       interval.       From
       /sys/class/drm/card0/power/rc6_residency_ms.
       GFXMHz  Instantaneous snapshot of what sysfs presents at the end of the
       measurement          interval.          From          /sys/class/graph-
       ics/fb0/device/drm/card0/gt_cur_freq_mhz.
       Pkg%pc2,  Pkg%pc3,  Pkg%pc6,  Pkg%pc7  percentage residency in hardware
       package idle states.  These numbers are from hardware  residency  coun-
       ters.
       PkgWatt Watts consumed by the whole package.
       CorWatt Watts consumed by the core part of the package.
       GFXWatt Watts consumed by the Graphics part of the package -- available
       only on client processors.
       RAMWatt Watts consumed by the DRAM DIMMS -- available  only  on  server
       processors.
       PKG_%  percent  of  the interval that RAPL throttling was active on the
       Package.  Note that the system summary is the sum of the package throt-
       tling time, and thus may be higher than 100% on a multi-package system.
       Note that the meaning of this field is model  specific.   For  example,
       some  hardware  increments  this  counter when RAPL responds to thermal
       limits, but does not increment this counter when RAPL responds to power
       limits.  Comparing PkgWatt and PkgTmp to system limits is necessary.
       RAM_% percent of the interval that RAPL throttling was active on DRAM.
       UncMHz uncore MHz, instantaneous sample.
TOO MUCH INFORMATION EXAMPLE
       By  default,  turbostat dumps all possible information -- a system con-
       figuration header, followed by columns for all counters.  This is ideal
       for  remote  debugging,  use the "--out" option to save everything to a
       text file, and get that file to the expert helping you debug.
       When you are not interested in all that information, and there are sev-
       eral  ways  to see only what you want.  First the "--quiet" option will
       skip the configuration information, and turbostat will  show  only  the
       counter  columns.  Second, you can reduce the columns with the "--hide"
       and "--show" options.  If you use the "--show" option,  then  turbostat
       will  show  only the columns you list.  If you use the "--hide" option,
       turbostat will show all columns, except the ones you list.
       To find out what columns are  available  for  --show  and  --hide,  the
       "--list"  option  is  available.  Usually, the CATEGORY names above are
       used to refer to groups of counters.  Also, for convenience,  the  spe-
       cial  string  "sysfs"  can be used to refer to all of the sysfs C-state
       counters at once:
       sudo ./turbostat --show sysfs --quiet sleep 10
       10.003837 sec
            C1   C1E  C3   C6   C7s  C1%  C1E% C3%  C6%  C7s%
            4    21   2    2    459  0.14 0.82 0.00 0.00 98.93
            1    17   2    2    130  0.00 0.02 0.00 0.00 99.80
            0    0    0    0    31   0.00 0.00 0.00 0.00 99.95
            2    1    0    0    52   1.14 6.49 0.00 0.00 92.21
            1    2    0    0    52   0.00 0.08 0.00 0.00 99.86
            0    0    0    0    71   0.00 0.00 0.00 0.00 99.89
            0    0    0    0    25   0.00 0.00 0.00 0.00 99.96
            0    0    0    0    74   0.00 0.00 0.00 0.00 99.94
            0    1    0    0    24   0.00 0.00 0.00 0.00 99.84
ONE SHOT COMMAND EXAMPLE
       If turbostat is invoked with a command, it will fork that  command  and
       output  the statistics gathered after the command exits.  In this case,
       turbostat output goes to stderr, by default.   Output  can  instead  be
       saved  to  a  file using the --out option.  In this example, the "sleep
       10" command is forked, and turbostat waits for it  to  complete  before
       saving  all statistics into "ts.out".  Note that "sleep 10" is not part
       of turbostat, but is simply an example of a command that turbostat  can
       fork.   The  "ts.out" file is what you want to edit in a very wide win-
       dow, paste into a spreadsheet, or attach to a bugzilla entry.
       [root@hsw]# ./turbostat -o ts.out sleep 10
       [root@hsw]#
PERIODIC INTERVAL EXAMPLE
       Without a command to fork, turbostat displays statistics  ever  5  sec-
       onds.  Periodic output goes to stdout, by default, unless --out is used
       to specify an output file.  The 5-second interval can be  changed  with
       the "-i sec" option.
       sudo turbostat --quiet --show CPU,frequency
            Core CPU  Avg_MHz   Busy%     Bzy_MHz   TSC_MHz   CPU%c7    UncMhz
            -    -    524  12.48     4198 3096 74.53     3800
            0    0    4    0.09 4081 3096 98.88     3800
            0    4    1    0.02 4063 3096
            1    1    2    0.06 4063 3096 99.60
            1    5    2    0.05 4070 3096
            2    2    4178 99.52     4199 3096 0.00
            2    6    3    0.08 4159 3096
            3    3    1    0.04 4046 3096 99.66
            3    7    0    0.01 3989 3096
            Core CPU  Avg_MHz   Busy%     Bzy_MHz   TSC_MHz   CPU%c7    UncMhz
            -    -    525  12.52     4198 3096 74.54     3800
            0    0    4    0.10 4051 3096 99.49     3800
            0    4    2    0.04 3993 3096
            1    1    3    0.07 4054 3096 99.56
            1    5    4    0.10 4018 3096
            2    2    4178 99.51     4199 3096 0.00
            2    6    4    0.09 4143 3096
            3    3    2    0.06 4026 3096 99.10
            3    7    7    0.17 4074 3096
       This  example  also shows the use of the --show option to show only the
       desired columns.
SYSTEM CONFIGURATION INFORMATION EXAMPLE
       By default, turbostat always  dumps  system  configuration  information
       before taking measurements.  In the example above, "--quiet" is used to
       suppress that output.  Here is an example of the configuration informa-
       tion:
       turbostat version 2022.04.16 - Len Brown <lenb AT kernel.org>
       Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.18.0-rc6-00001-ge6891250e3b5 ...
       CPUID(0): GenuineIntel 0x16 CPUID levels
       CPUID(1): family:model:stepping 0x6:9e:9 (6:158:9) microcode 0xea
       CPUID(0x80000000): max_extended_levels: 0x80000008
       CPUID(1): SSE3 MONITOR - EIST TM2 TSC MSR ACPI-TM HT TM
       CPUID(6): APERF, TURBO, DTS, PTM, HWP, HWPnotify, HWPwindow, HWPepp, No-HWPpkg, EPB
       cpu7: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MWAIT PREFETCH TURBO)
       CPUID(7): SGX
       cpu7: MSR_IA32_FEATURE_CONTROL: 0x00000005 (Locked )
       CPUID(0x15): eax_crystal: 2 ebx_tsc: 258 ecx_crystal_hz: 0
       TSC: 3096 MHz (24000000 Hz * 258 / 2 / 1000000)
       CPUID(0x16): base_mhz: 3100 max_mhz: 4200 bus_mhz: 100
       cpu7: MSR_MISC_PWR_MGMT: 0x00401cc0 (ENable-EIST_Coordination DISable-EPB DISable-OOB)
       RAPL: 5825 sec. Joule Counter Range, at 45 Watts
       cpu7: MSR_PLATFORM_INFO: 0x80839f1011f00
       8 * 100.0 = 800.0 MHz max efficiency frequency
       31 * 100.0 = 3100.0 MHz base frequency
       cpu7: MSR_IA32_POWER_CTL: 0x002c005d (C1E auto-promotion: DISabled)
       cpu7: MSR_TURBO_RATIO_LIMIT: 0x2728292a
       39 * 100.0 = 3900.0 MHz max turbo 4 active cores
       40 * 100.0 = 4000.0 MHz max turbo 3 active cores
       41 * 100.0 = 4100.0 MHz max turbo 2 active cores
       42 * 100.0 = 4200.0 MHz max turbo 1 active cores
       cpu7: MSR_CONFIG_TDP_NOMINAL: 0x0000001f (base_ratio=31)
       cpu7: MSR_CONFIG_TDP_LEVEL_1: 0x00000000 ()
       cpu7: MSR_CONFIG_TDP_LEVEL_2: 0x00000000 ()
       cpu7: MSR_CONFIG_TDP_CONTROL: 0x80000000 ( lock=1)
       cpu7: MSR_TURBO_ACTIVATION_RATIO: 0x00000000 (MAX_NON_TURBO_RATIO=0 lock=0)
       cpu7: MSR_PKG_CST_CONFIG_CONTROL: 0x1e008008 (UNdemote-C3, UNdemote-C1, demote-C3, demote-C1, locked, pkg-cstate-limit=8 (unlimited))
       Uncore Frequency pkg0 die0: 800 - 3900 MHz (800 - 3900 MHz)
       /dev/cpu_dma_latency: 2000000000 usec (default)
       current_driver: intel_idle
       current_governor: menu
       current_governor_ro: menu
       cpu7: POLL: CPUIDLE CORE POLL IDLE
       cpu7: C1: MWAIT 0x00
       cpu7: C1E: MWAIT 0x01
       cpu7: C3: MWAIT 0x10
       cpu7: C6: MWAIT 0x20
       cpu7: C7s: MWAIT 0x33
       cpu7: C8: MWAIT 0x40
       cpu7: C9: MWAIT 0x50
       cpu7: C10: MWAIT 0x60
       cpu7: cpufreq driver: intel_pstate
       cpu7: cpufreq governor: performance
       cpufreq intel_pstate no_turbo: 0
       cpu7: MSR_MISC_FEATURE_CONTROL: 0x00000000 (L2-Prefetch L2-Prefetch-pair L1-Prefetch L1-IP-Prefetch)
       cpu0: MSR_PM_ENABLE: 0x00000001 (HWP)
       cpu0: MSR_HWP_CAPABILITIES: 0x01101f53 (high 83 guar 31 eff 16 low 1)
       cpu0: MSR_HWP_REQUEST: 0x00005353 (min 83 max 83 des 0 epp 0x0 window 0x0 pkg 0x0)
       cpu0: MSR_HWP_INTERRUPT: 0x00000001 (EN_Guaranteed_Perf_Change, Dis_Excursion_Min)
       cpu0: MSR_HWP_STATUS: 0x00000004 (No-Guaranteed_Perf_Change, No-Excursion_Min)
       cpu0: EPB: 6 (balanced)
       cpu0: MSR_RAPL_POWER_UNIT: 0x000a0e03 (0.125000 Watts, 0.000061 Joules, 0.000977 sec.)
       cpu0: MSR_PKG_POWER_INFO: 0x00000168 (45 W TDP, RAPL 0 - 0 W, 0.000000 sec.)
       cpu0: MSR_PKG_POWER_LIMIT: 0x42820800218208 (UNlocked)
       cpu0: PKG Limit #1: ENabled (65.000 Watts, 64.000000 sec, clamp ENabled)
       cpu0: PKG Limit #2: ENabled (65.000 Watts, 0.002441* sec, clamp DISabled)
       cpu0: MSR_VR_CURRENT_CONFIG: 0x00000000
       cpu0: PKG Limit #4: 0.000000 Watts (UNlocked)
       cpu0: MSR_DRAM_POWER_LIMIT: 0x5400de00000000 (UNlocked)
       cpu0: DRAM Limit: DISabled (0.000 Watts, 0.000977 sec, clamp DISabled)
       cpu0: MSR_PP0_POLICY: 0
       cpu0: MSR_PP0_POWER_LIMIT: 0x00000000 (UNlocked)
       cpu0: Cores Limit: DISabled (0.000 Watts, 0.000977 sec, clamp DISabled)
       cpu0: MSR_PP1_POLICY: 0
       cpu0: MSR_PP1_POWER_LIMIT: 0x00000000 (UNlocked)
       cpu0: GFX Limit: DISabled (0.000 Watts, 0.000977 sec, clamp DISabled)
       cpu0: MSR_IA32_TEMPERATURE_TARGET: 0x00640000 (100 C) (100 default - 0 offset)
       cpu0: MSR_IA32_PACKAGE_THERM_STATUS: 0x88200800 (68 C)
       cpu0: MSR_IA32_PACKAGE_THERM_INTERRUPT: 0x00000003 (100 C, 100 C)
       cpu7: MSR_PKGC3_IRTL: 0x0000884e (valid, 79872 ns)
       cpu7: MSR_PKGC6_IRTL: 0x00008876 (valid, 120832 ns)
       cpu7: MSR_PKGC7_IRTL: 0x00008894 (valid, 151552 ns)
       cpu7: MSR_PKGC8_IRTL: 0x000088fa (valid, 256000 ns)
       cpu7: MSR_PKGC9_IRTL: 0x0000894c (valid, 339968 ns)
       cpu7: MSR_PKGC10_IRTL: 0x00008bf2 (valid, 1034240 ns)
       The  max  efficiency  frequency, a.k.a. Low Frequency Mode, is the fre-
       quency available at the minimum package voltage.  The TSC frequency  is
       the  base  frequency  of  the  processor -- this should match the brand
       string in /proc/cpuinfo.  This base frequency should be sustainable  on
       all  CPUs indefinitely, given nominal power and cooling.  The remaining
       rows show what maximum turbo frequency is  possible  depending  on  the
       number  of  idle  cores.  Note that not all information is available on
       all processors.
ADD COUNTER EXAMPLE
       Here we limit turbostat to showing just the CPU number for cpu0 - cpu3.
       We   add   a  counter  showing  the  32-bit  raw  value  of  MSR  0x199
       (MSR_IA32_PERF_CTL), labeling it with the  column  header,  "PRF_CTRL",
       and display it only once, afte the conclusion of a 0.1 second sleep.
       sudo ./turbostat --quiet --cpu 0-3 --show CPU --add msr0x199,u32,raw,PRF_CTRL sleep .1
       0.101604 sec
       CPU    PRF_CTRL
       -    0x00000000
       0    0x00000c00
       1    0x00000800
       2    0x00000a00
       3    0x00000800
INPUT
       For  interval-mode, turbostat will immediately end the current interval
       when it sees a newline on standard input.  turbostat  will  then  start
       the next interval.  Control-C will be send a SIGINT to turbostat, which
       will immediately abort the program with no further processing.
SIGNALS
       SIGINT will interrupt interval-mode.  The end-of-interval data will  be
       collected and displayed before turbostat exits.
       SIGUSR1  will  end  current interval, end-of-interval data will be col-
       lected and displayed before turbostat starts a new interval.
NOTES
       turbostat must be run as root.  Alternatively, non-root  users  can  be
       enabled to run turbostat this way:
       # setcap cap_sys_admin,cap_sys_rawio,cap_sys_nice=+ep ./turbostat
       # chmod +r /dev/cpu/*/msr
       turbostat  reads hardware counters, but doesn't write them.  So it will
       not interfere with the OS or other programs, including multiple invoca-
       tions of itself.
       turbostat  may  work  poorly  on  Linux-2.6.20 through 2.6.29, as acpi-
       cpufreq periodically cleared the APERF and MPERF MSRs in those kernels.
       AVG_MHz = APERF_delta/measurement_interval.  This is the actual  number
       of  elapsed  cycles  divided by the entire sample interval -- including
       idle time.  Note that this calculation is resilient to systems  lacking
       a non-stop TSC.
       TSC_MHz  = TSC_delta/measurement_interval.  On a system with an invari-
       ant TSC, this value will be constant and will closely  match  the  base
       frequency  value shown in the brand string in /proc/cpuinfo.  On a sys-
       tem where the TSC stops in idle, TSC_MHz will drop  below  the  proces-
       sor's base frequency.
       Busy% = MPERF_delta/TSC_delta
       Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/measurement_interval
       Note that these calculations depend on TSC_delta, so they are not reli-
       able during intervals when TSC_MHz is not  running  at  the  base  fre-
       quency.
       Turbostat  data  collection is not atomic.  Extremely short measurement
       intervals (much less than 1 second), or system activity  that  prevents
       turbostat  from  being able to run on all CPUS to quickly collect data,
       will result in inconsistent results.
       The APERF, MPERF MSRs are defined to count non-halted cycles.  Although
       it  is  not guaranteed by the architecture, turbostat assumes that they
       count at TSC rate, which is true on all processors tested to date.
REFERENCES
       Volume  3B:  System  Programming   Guide"   https://www.intel.com/prod-
       ucts/processor/manuals/
FILES
       /dev/cpu/*/msr
SEE ALSO
       msr(4), vmstat(8)
AUTHOR
       Written by Len Brown <len.brown AT intel.com>
                                                                  TURBOSTAT(8)