summaryrefslogtreecommitdiffstats
path: root/tools/power/x86/turbostat/turbostat.8
diff options
context:
space:
mode:
Diffstat (limited to 'tools/power/x86/turbostat/turbostat.8')
-rw-r--r--tools/power/x86/turbostat/turbostat.8127
1 files changed, 48 insertions, 79 deletions
diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8
index b4ddb748356..56bfb523c5b 100644
--- a/tools/power/x86/turbostat/turbostat.8
+++ b/tools/power/x86/turbostat/turbostat.8
@@ -47,21 +47,22 @@ displays the statistics gathered since it was forked.
.PP
.SH FIELD DESCRIPTIONS
.nf
-\fBpk\fP processor package number.
-\fBcor\fP processor core number.
+\fBPackage\fP processor package number.
+\fBCore\fP processor core number.
\fBCPU\fP Linux CPU (logical processor) number.
Note that multiple CPUs per core indicate support for Intel(R) Hyper-Threading Technology.
-\fB%c0\fP percent of the interval that the CPU retired instructions.
-\fBGHz\fP average clock rate while the CPU was in c0 state.
-\fBTSC\fP average GHz that the TSC ran during the entire interval.
-\fB%c1, %c3, %c6, %c7\fP show the percentage residency in hardware core idle states.
-\fBCTMP\fP Degrees Celsius reported by the per-core Digital Thermal Sensor.
-\fBPTMP\fP Degrees Celsius reported by the per-package Package Thermal Monitor.
-\fB%pc2, %pc3, %pc6, %pc7\fP percentage residency in hardware package idle states.
-\fBPkg_W\fP Watts consumed by the whole package.
-\fBCor_W\fP Watts consumed by the core part of the package.
-\fBGFX_W\fP Watts consumed by the Graphics part of the package -- available only on client processors.
-\fBRAM_W\fP Watts consumed by the DRAM DIMMS -- available only on server processors.
+\fBAVG_MHz\fP number of cycles executed divided by time elapsed.
+\fB%Buzy\fP percent of the interval that the CPU retired instructions, aka. % of time in "C0" state.
+\fBBzy_MHz\fP average clock rate while the CPU was busy (in "c0" state).
+\fBTSC_MHz\fP average MHz that the TSC ran during the entire interval.
+\fBCPU%c1, CPU%c3, CPU%c6, CPU%c7\fP show the percentage residency in hardware core idle states.
+\fBCoreTmp\fP Degrees Celsius reported by the per-core Digital Thermal Sensor.
+\fBPkgTtmp\fP Degrees Celsius reported by the per-package Package Thermal Monitor.
+\fBPkg%pc2, Pkg%pc3, Pkg%pc6, Pkg%pc7\fP percentage residency in hardware package idle states.
+\fBPkgWatt\fP Watts consumed by the whole package.
+\fBCorWatt\fP Watts consumed by the core part of the package.
+\fBGFXWatt\fP Watts consumed by the Graphics part of the package -- available only on client processors.
+\fBRAMWatt\fP Watts consumed by the DRAM DIMMS -- available only on server processors.
\fBPKG_%\fP percent of the interval that RAPL throttling was active on the Package.
\fBRAM_%\fP percent of the interval that RAPL throttling was active on DRAM.
.fi
@@ -78,29 +79,17 @@ For Watts columns, the summary is a system total.
Subsequent rows show per-CPU statistics.
.nf
-[root@sandy]# ./turbostat
-cor CPU %c0 GHz TSC %c1 %c3 %c6 %c7 CTMP PTMP %pc2 %pc3 %pc6 %pc7 Pkg_W Cor_W GFX_W
- 0.06 0.80 2.29 0.11 0.00 0.00 99.83 47 40 0.26 0.01 0.44 98.78 3.49 0.12 0.14
- 0 0 0.07 0.80 2.29 0.07 0.00 0.00 99.86 40 40 0.26 0.01 0.44 98.78 3.49 0.12 0.14
- 0 4 0.03 0.80 2.29 0.12
- 1 1 0.04 0.80 2.29 0.25 0.01 0.00 99.71 40
- 1 5 0.16 0.80 2.29 0.13
- 2 2 0.05 0.80 2.29 0.06 0.01 0.00 99.88 40
- 2 6 0.03 0.80 2.29 0.08
- 3 3 0.05 0.80 2.29 0.08 0.00 0.00 99.87 47
- 3 7 0.04 0.84 2.29 0.09
-.fi
-.SH SUMMARY EXAMPLE
-The "-s" option prints the column headers just once,
-and then the one line system summary for each sample interval.
-
-.nf
-[root@wsm]# turbostat -S
- %c0 GHz TSC %c1 %c3 %c6 CTMP %pc3 %pc6
- 1.40 2.81 3.38 10.78 43.47 44.35 42 13.67 2.09
- 1.34 2.90 3.38 11.48 58.96 28.23 41 19.89 0.15
- 1.55 2.72 3.38 26.73 37.66 34.07 42 2.53 2.80
- 1.37 2.83 3.38 16.95 60.05 21.63 42 5.76 0.20
+[root@ivy]# ./turbostat
+ Core CPU Avg_MHz %Busy Bzy_MHz TSC_MHz SMI CPU%c1 CPU%c3 CPU%c6 CPU%c7 CoreTmp PkgTmp Pkg%pc2 Pkg%pc3 Pkg%pc6 Pkg%pc7 PkgWatt CorWatt GFXWatt
+ - - 6 0.36 1596 3492 0 0.59 0.01 99.04 0.00 23 24 23.82 0.01 72.47 0.00 6.40 1.01 0.00
+ 0 0 9 0.58 1596 3492 0 0.28 0.01 99.13 0.00 23 24 23.82 0.01 72.47 0.00 6.40 1.01 0.00
+ 0 4 1 0.07 1596 3492 0 0.79
+ 1 1 10 0.65 1596 3492 0 0.59 0.00 98.76 0.00 23
+ 1 5 5 0.28 1596 3492 0 0.95
+ 2 2 10 0.66 1596 3492 0 0.41 0.01 98.92 0.00 23
+ 2 6 2 0.10 1597 3492 0 0.97
+ 3 3 3 0.20 1596 3492 0 0.44 0.00 99.37 0.00 23
+ 3 7 5 0.31 1596 3492 0 0.33
.fi
.SH VERBOSE EXAMPLE
The "-v" option adds verbosity to the output:
@@ -154,55 +143,35 @@ eg. Here a cycle soaker is run on 1 CPU (see %c0) for a few seconds
until ^C while the other CPUs are mostly idle:
.nf
-[root@x980 lenb]# ./turbostat cat /dev/zero > /dev/null
+root@ivy: turbostat cat /dev/zero > /dev/null
^C
-cor CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
- 8.86 3.61 3.38 15.06 31.19 44.89 0.00 0.00
- 0 0 1.46 3.22 3.38 16.84 29.48 52.22 0.00 0.00
- 0 6 0.21 3.06 3.38 18.09
- 1 2 0.53 3.33 3.38 2.80 46.40 50.27
- 1 8 0.89 3.47 3.38 2.44
- 2 4 1.36 3.43 3.38 9.04 23.71 65.89
- 2 10 0.18 2.86 3.38 10.22
- 8 1 0.04 2.87 3.38 99.96 0.01 0.00
- 8 7 99.72 3.63 3.38 0.27
- 9 3 0.31 3.21 3.38 7.64 56.55 35.50
- 9 9 0.08 2.95 3.38 7.88
- 10 5 1.42 3.43 3.38 2.14 30.99 65.44
- 10 11 0.16 2.88 3.38 3.40
+ Core CPU Avg_MHz %Busy Bzy_MHz TSC_MHz SMI CPU%c1 CPU%c3 CPU%c6 CPU%c7 CoreTmp PkgTmp Pkg%pc2 Pkg%pc3 Pkg%pc6 Pkg%pc7 PkgWatt CorWatt GFXWatt
+ - - 496 12.75 3886 3492 0 13.16 0.04 74.04 0.00 36 36 0.00 0.00 0.00 0.00 23.15 17.65 0.00
+ 0 0 22 0.57 3830 3492 0 0.83 0.02 98.59 0.00 27 36 0.00 0.00 0.00 0.00 23.15 17.65 0.00
+ 0 4 9 0.24 3829 3492 0 1.15
+ 1 1 4 0.09 3783 3492 0 99.91 0.00 0.00 0.00 36
+ 1 5 3880 99.82 3888 3492 0 0.18
+ 2 2 17 0.44 3813 3492 0 0.77 0.04 98.75 0.00 28
+ 2 6 12 0.32 3823 3492 0 0.89
+ 3 3 16 0.43 3844 3492 0 0.63 0.11 98.84 0.00 30
+ 3 7 4 0.11 3827 3492 0 0.94
+30.372243 sec
+
.fi
-Above the cycle soaker drives cpu7 up its 3.6 GHz turbo limit
+Above the cycle soaker drives cpu5 up its 3.8 GHz turbo limit
while the other processors are generally in various states of idle.
-Note that cpu1 and cpu7 are HT siblings within core8.
-As cpu7 is very busy, it prevents its sibling, cpu1,
+Note that cpu1 and cpu5 are HT siblings within core1.
+As cpu5 is very busy, it prevents its sibling, cpu1,
from entering a c-state deeper than c1.
-Note that turbostat reports average GHz of 3.63, while
-the arithmetic average of the GHz column above is lower.
-This is a weighted average, where the weight is %c0. ie. it is the total number of
-un-halted cycles elapsed per time divided by the number of CPUs.
-.SH SMI COUNTING EXAMPLE
-On Intel Nehalem and newer processors, MSR 0x34 is a System Management Mode Interrupt (SMI) counter.
-This counter is shown by default under the "SMI" column.
-.nf
-[root@x980 ~]# turbostat
-cor CPU %c0 GHz TSC SMI %c1 %c3 %c6 CTMP %pc3 %pc6
- 0.11 1.91 3.38 0 1.84 0.26 97.79 29 0.82 83.87
- 0 0 0.40 1.63 3.38 0 10.27 0.12 89.20 20 0.82 83.88
- 0 6 0.06 1.63 3.38 0 10.61
- 1 2 0.37 2.63 3.38 0 0.02 0.10 99.51 22
- 1 8 0.01 1.62 3.38 0 0.39
- 2 4 0.07 1.62 3.38 0 0.04 0.07 99.82 23
- 2 10 0.02 1.62 3.38 0 0.09
- 8 1 0.23 1.64 3.38 0 0.10 1.07 98.60 24
- 8 7 0.02 1.64 3.38 0 0.31
- 9 3 0.03 1.62 3.38 0 0.03 0.05 99.89 29
- 9 9 0.02 1.62 3.38 0 0.05
- 10 5 0.07 1.62 3.38 0 0.08 0.12 99.73 27
- 10 11 0.03 1.62 3.38 0 0.13
-^C
-.fi
+Note that the Avg_MHz column reflects the total number of cycles executed
+divided by the measurement interval. If the %Busy column is 100%,
+then the processor was running at that speed the entire interval.
+The Avg_MHz multiplied by the %Busy results in the Bzy_MHz --
+which is the average frequency while the processor was executing --
+not including any non-busy idle time.
+
.SH NOTES
.B "turbostat "