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-rw-r--r--tools/power/x86/turbostat/turbostat.877
1 files changed, 40 insertions, 37 deletions
diff --git a/tools/power/x86/turbostat/turbostat.8 b/tools/power/x86/turbostat/turbostat.8
index adf175f6149..74e44507dfe 100644
--- a/tools/power/x86/turbostat/turbostat.8
+++ b/tools/power/x86/turbostat/turbostat.8
@@ -27,7 +27,11 @@ supports an "invariant" TSC, plus the APERF and MPERF MSRs.
on processors that additionally support C-state residency counters.
.SS Options
-The \fB-s\fP option prints only a 1-line summary for each sample interval.
+The \fB-s\fP option limits output to a 1-line system summary for each interval.
+.PP
+The \fB-c\fP option limits output to the 1st thread in each core.
+.PP
+The \fB-p\fP option limits output to the 1st thread in each package.
.PP
The \fB-v\fP option increases verbosity.
.PP
@@ -65,19 +69,19 @@ Subsequent rows show per-CPU statistics.
.nf
[root@x980]# ./turbostat
cor CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
- 0.60 1.63 3.38 2.91 0.00 96.49 0.00 76.64
- 0 0 0.59 1.62 3.38 4.51 0.00 94.90 0.00 76.64
- 0 6 1.13 1.64 3.38 3.97 0.00 94.90 0.00 76.64
- 1 2 0.08 1.62 3.38 0.07 0.00 99.85 0.00 76.64
- 1 8 0.03 1.62 3.38 0.12 0.00 99.85 0.00 76.64
- 2 4 0.01 1.62 3.38 0.06 0.00 99.93 0.00 76.64
- 2 10 0.04 1.62 3.38 0.02 0.00 99.93 0.00 76.64
- 8 1 2.85 1.62 3.38 11.71 0.00 85.44 0.00 76.64
- 8 7 1.98 1.62 3.38 12.58 0.00 85.44 0.00 76.64
- 9 3 0.36 1.62 3.38 0.71 0.00 98.93 0.00 76.64
- 9 9 0.09 1.62 3.38 0.98 0.00 98.93 0.00 76.64
- 10 5 0.03 1.62 3.38 0.09 0.00 99.87 0.00 76.64
- 10 11 0.07 1.62 3.38 0.06 0.00 99.87 0.00 76.64
+ 0.09 1.62 3.38 1.83 0.32 97.76 1.26 83.61
+ 0 0 0.15 1.62 3.38 10.23 0.05 89.56 1.26 83.61
+ 0 6 0.05 1.62 3.38 10.34
+ 1 2 0.03 1.62 3.38 0.07 0.05 99.86
+ 1 8 0.03 1.62 3.38 0.06
+ 2 4 0.21 1.62 3.38 0.10 1.49 98.21
+ 2 10 0.02 1.62 3.38 0.29
+ 8 1 0.04 1.62 3.38 0.04 0.08 99.84
+ 8 7 0.01 1.62 3.38 0.06
+ 9 3 0.53 1.62 3.38 0.10 0.20 99.17
+ 9 9 0.02 1.62 3.38 0.60
+ 10 5 0.01 1.62 3.38 0.02 0.04 99.92
+ 10 11 0.02 1.62 3.38 0.02
.fi
.SH SUMMARY EXAMPLE
The "-s" option prints the column headers just once,
@@ -86,9 +90,10 @@ and then the one line system summary for each sample interval.
.nf
[root@x980]# ./turbostat -s
%c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
- 0.61 1.89 3.38 5.95 0.00 93.44 0.00 66.33
- 0.52 1.62 3.38 6.83 0.00 92.65 0.00 61.11
- 0.62 1.92 3.38 5.47 0.00 93.91 0.00 67.31
+ 0.23 1.67 3.38 2.00 0.30 97.47 1.07 82.12
+ 0.10 1.62 3.38 1.87 2.25 95.77 12.02 72.60
+ 0.20 1.64 3.38 1.98 0.11 97.72 0.30 83.36
+ 0.11 1.70 3.38 1.86 1.81 96.22 9.71 74.90
.fi
.SH VERBOSE EXAMPLE
The "-v" option adds verbosity to the output:
@@ -120,30 +125,28 @@ until ^C while the other CPUs are mostly idle:
[root@x980 lenb]# ./turbostat cat /dev/zero > /dev/null
^C
cor CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
- 8.63 3.64 3.38 14.46 0.49 76.42 0.00 0.00
- 0 0 0.34 3.36 3.38 99.66 0.00 0.00 0.00 0.00
- 0 6 99.96 3.64 3.38 0.04 0.00 0.00 0.00 0.00
- 1 2 0.14 3.50 3.38 1.75 2.04 96.07 0.00 0.00
- 1 8 0.38 3.57 3.38 1.51 2.04 96.07 0.00 0.00
- 2 4 0.01 2.65 3.38 0.06 0.00 99.93 0.00 0.00
- 2 10 0.03 2.12 3.38 0.04 0.00 99.93 0.00 0.00
- 8 1 0.91 3.59 3.38 35.27 0.92 62.90 0.00 0.00
- 8 7 1.61 3.63 3.38 34.57 0.92 62.90 0.00 0.00
- 9 3 0.04 3.38 3.38 0.20 0.00 99.76 0.00 0.00
- 9 9 0.04 3.29 3.38 0.20 0.00 99.76 0.00 0.00
- 10 5 0.03 3.08 3.38 0.12 0.00 99.85 0.00 0.00
- 10 11 0.05 3.07 3.38 0.10 0.00 99.85 0.00 0.00
-4.907015 sec
-
+ 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
.fi
-Above the cycle soaker drives cpu6 up 3.6 Ghz turbo limit
+Above the cycle soaker drives cpu7 up its 3.6 Ghz turbo limit
while the other processors are generally in various states of idle.
-Note that cpu0 is an HT sibling sharing core0
-with cpu6, and thus it is unable to get to an idle state
-deeper than c1 while cpu6 is busy.
+Note that cpu1 and cpu7 are HT siblings within core8.
+As cpu7 is very busy, it prevents its sibling, cpu1,
+from entering a c-state deeper than c1.
-Note that turbostat reports average GHz of 3.64, while
+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.