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tools turbostat: add summary option
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turbostat -s
cuts down on the amount of output, per user request.

also treak some output whitespace and the man page.

Signed-off-by: Len Brown <[email protected]>
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lenb committed Mar 29, 2012
1 parent c16fa4f commit e23da03
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99 changes: 58 additions & 41 deletions tools/power/x86/turbostat/turbostat.8
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Original file line number Diff line number Diff line change
Expand Up @@ -4,11 +4,13 @@ turbostat \- Report processor frequency and idle statistics
.SH SYNOPSIS
.ft B
.B turbostat
.RB [ "\-s" ]
.RB [ "\-v" ]
.RB [ "\-M MSR#" ]
.RB command
.br
.B turbostat
.RB [ "\-s" ]
.RB [ "\-v" ]
.RB [ "\-M MSR#" ]
.RB [ "\-i interval_sec" ]
Expand All @@ -25,6 +27,8 @@ 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.
.PP
The \fB-v\fP option increases verbosity.
.PP
The \fB-M MSR#\fP option dumps the specified MSR,
Expand All @@ -39,39 +43,52 @@ displays the statistics gathered since it was forked.
.SH FIELD DESCRIPTIONS
.nf
\fBpk\fP processor package number.
\fBcr\fP processor core number.
\fBcor\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\fP show the percentage residency in hardware core idle states.
\fB%pc3, %pc6\fP percentage residency in hardware package idle states.
\fB%c1, %c3, %c6, %c7\fP show the percentage residency in hardware core idle states.
\fB%pc2, %pc3, %pc6, %pc7\fP percentage residency in hardware package idle states.
.fi
.PP
.SH EXAMPLE
Without any parameters, turbostat prints out counters ever 5 seconds.
(override interval with "-i sec" option, or specify a command
for turbostat to fork).

The first row of statistics reflect the average for the entire system.
The first row of statistics is a summary for the entire system.
Note that the summary is a weighted average.
Subsequent rows show per-CPU statistics.

.nf
[root@x980]# ./turbostat
cr CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
0.04 1.62 3.38 0.11 0.00 99.85 0.00 95.07
0 0 0.04 1.62 3.38 0.06 0.00 99.90 0.00 95.07
0 6 0.02 1.62 3.38 0.08 0.00 99.90 0.00 95.07
1 2 0.10 1.62 3.38 0.29 0.00 99.61 0.00 95.07
1 8 0.11 1.62 3.38 0.28 0.00 99.61 0.00 95.07
2 4 0.01 1.62 3.38 0.01 0.00 99.98 0.00 95.07
2 10 0.01 1.61 3.38 0.02 0.00 99.98 0.00 95.07
8 1 0.07 1.62 3.38 0.15 0.00 99.78 0.00 95.07
8 7 0.03 1.62 3.38 0.19 0.00 99.78 0.00 95.07
9 3 0.01 1.62 3.38 0.02 0.00 99.98 0.00 95.07
9 9 0.01 1.62 3.38 0.02 0.00 99.98 0.00 95.07
10 5 0.01 1.62 3.38 0.13 0.00 99.86 0.00 95.07
10 11 0.08 1.62 3.38 0.05 0.00 99.86 0.00 95.07
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
.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@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
.fi
.SH VERBOSE EXAMPLE
The "-v" option adds verbosity to the output:
Expand Down Expand Up @@ -101,33 +118,33 @@ until ^C while the other CPUs are mostly idle:

.nf
[root@x980 lenb]# ./turbostat cat /dev/zero > /dev/null

^Ccr CPU %c0 GHz TSC %c1 %c3 %c6 %pc3 %pc6
8.49 3.63 3.38 16.23 0.66 74.63 0.00 0.00
0 0 1.22 3.62 3.38 32.18 0.00 66.60 0.00 0.00
0 6 0.40 3.61 3.38 33.00 0.00 66.60 0.00 0.00
1 2 0.11 3.14 3.38 0.19 3.95 95.75 0.00 0.00
1 8 0.05 2.88 3.38 0.25 3.95 95.75 0.00 0.00
2 4 0.00 3.13 3.38 0.02 0.00 99.98 0.00 0.00
2 10 0.00 3.09 3.38 0.02 0.00 99.98 0.00 0.00
8 1 0.04 3.50 3.38 14.43 0.00 85.54 0.00 0.00
8 7 0.03 2.98 3.38 14.43 0.00 85.54 0.00 0.00
9 3 0.00 3.16 3.38 100.00 0.00 0.00 0.00 0.00
9 9 99.93 3.63 3.38 0.06 0.00 0.00 0.00 0.00
10 5 0.01 2.82 3.38 0.08 0.00 99.91 0.00 0.00
10 11 0.02 3.36 3.38 0.06 0.00 99.91 0.00 0.00
6.950866 sec
^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

.fi
Above the cycle soaker drives cpu9 up 3.6 Ghz turbo limit
Above the cycle soaker drives cpu6 up 3.6 Ghz turbo limit
while the other processors are generally in various states of idle.

Note that cpu3 is an HT sibling sharing core9
with cpu9, and thus it is unable to get to an idle state
deeper than c1 while cpu9 is busy.
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 turbostat reports average GHz of 3.61, while
the arithmetic average of the GHz column above is 3.24.
Note that turbostat reports average GHz of 3.64, 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 NOTES
Expand Down Expand Up @@ -167,6 +184,6 @@ http://www.intel.com/products/processor/manuals/
.SH "SEE ALSO"
msr(4), vmstat(8)
.PP
.SH AUTHORS
.SH AUTHOR
.nf
Written by Len Brown <[email protected]>
90 changes: 62 additions & 28 deletions tools/power/x86/turbostat/turbostat.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
* turbostat -- show CPU frequency and C-state residency
* on modern Intel turbo-capable processors.
*
* Copyright (c) 2010, Intel Corporation.
* Copyright (c) 2012 Intel Corporation.
* Len Brown <[email protected]>
*
* This program is free software; you can redistribute it and/or modify it
Expand Down Expand Up @@ -49,6 +49,7 @@
char *proc_stat = "/proc/stat";
unsigned int interval_sec = 5; /* set with -i interval_sec */
unsigned int verbose; /* set with -v */
unsigned int summary_only; /* set with -s */
unsigned int skip_c0;
unsigned int skip_c1;
unsigned int do_nhm_cstates;
Expand Down Expand Up @@ -129,14 +130,18 @@ void print_header(void)
{
if (show_pkg)
fprintf(stderr, "pk");
if (show_pkg)
fprintf(stderr, " ");
if (show_core)
fprintf(stderr, " cr");
fprintf(stderr, "cor");
if (show_cpu)
fprintf(stderr, " CPU");
if (show_pkg || show_core || show_cpu)
fprintf(stderr, " ");
if (do_nhm_cstates)
fprintf(stderr, " %%c0 ");
fprintf(stderr, " %%c0");
if (has_aperf)
fprintf(stderr, " GHz");
fprintf(stderr, " GHz");
fprintf(stderr, " TSC");
if (do_nhm_cstates)
fprintf(stderr, " %%c1");
Expand All @@ -147,13 +152,13 @@ void print_header(void)
if (do_snb_cstates)
fprintf(stderr, " %%c7");
if (do_snb_cstates)
fprintf(stderr, " %%pc2");
fprintf(stderr, " %%pc2");
if (do_nhm_cstates)
fprintf(stderr, " %%pc3");
fprintf(stderr, " %%pc3");
if (do_nhm_cstates)
fprintf(stderr, " %%pc6");
fprintf(stderr, " %%pc6");
if (do_snb_cstates)
fprintf(stderr, " %%pc7");
fprintf(stderr, " %%pc7");
if (extra_msr_offset)
fprintf(stderr, " MSR 0x%x ", extra_msr_offset);

Expand Down Expand Up @@ -187,6 +192,15 @@ void dump_list(struct counters *cnt)
dump_cnt(cnt);
}

/*
* column formatting convention & formats
* package: "pk" 2 columns %2d
* core: "cor" 3 columns %3d
* CPU: "CPU" 3 columns %3d
* GHz: "GHz" 3 columns %3.2
* TSC: "TSC" 3 columns %3.2
* percentage " %pc3" %6.2
*/
void print_cnt(struct counters *p)
{
double interval_float;
Expand All @@ -196,39 +210,45 @@ void print_cnt(struct counters *p)
/* topology columns, print blanks on 1st (average) line */
if (p == cnt_average) {
if (show_pkg)
fprintf(stderr, " ");
if (show_pkg && show_core)
fprintf(stderr, " ");
if (show_core)
fprintf(stderr, " ");
fprintf(stderr, " ");
if (show_cpu)
fprintf(stderr, " ");
fprintf(stderr, " " " ");
} else {
if (show_pkg)
fprintf(stderr, "%d", p->pkg);
fprintf(stderr, "%2d", p->pkg);
if (show_pkg && show_core)
fprintf(stderr, " ");
if (show_core)
fprintf(stderr, "%4d", p->core);
fprintf(stderr, "%3d", p->core);
if (show_cpu)
fprintf(stderr, "%4d", p->cpu);
fprintf(stderr, " %3d", p->cpu);
}

/* %c0 */
if (do_nhm_cstates) {
if (show_pkg || show_core || show_cpu)
fprintf(stderr, " ");
if (!skip_c0)
fprintf(stderr, "%7.2f", 100.0 * p->mperf/p->tsc);
fprintf(stderr, "%6.2f", 100.0 * p->mperf/p->tsc);
else
fprintf(stderr, " ****");
fprintf(stderr, " ****");
}

/* GHz */
if (has_aperf) {
if (!aperf_mperf_unstable) {
fprintf(stderr, "%5.2f",
fprintf(stderr, " %3.2f",
1.0 * p->tsc / units * p->aperf /
p->mperf / interval_float);
} else {
if (p->aperf > p->tsc || p->mperf > p->tsc) {
fprintf(stderr, " ****");
fprintf(stderr, " ***");
} else {
fprintf(stderr, "%4.1f*",
fprintf(stderr, "%3.1f*",
1.0 * p->tsc /
units * p->aperf /
p->mperf / interval_float);
Expand All @@ -241,7 +261,7 @@ void print_cnt(struct counters *p)

if (do_nhm_cstates) {
if (!skip_c1)
fprintf(stderr, "%7.2f", 100.0 * p->c1/p->tsc);
fprintf(stderr, " %6.2f", 100.0 * p->c1/p->tsc);
else
fprintf(stderr, " ****");
}
Expand All @@ -252,13 +272,13 @@ void print_cnt(struct counters *p)
if (do_snb_cstates)
fprintf(stderr, " %6.2f", 100.0 * p->c7/p->tsc);
if (do_snb_cstates)
fprintf(stderr, " %5.2f", 100.0 * p->pc2/p->tsc);
fprintf(stderr, " %6.2f", 100.0 * p->pc2/p->tsc);
if (do_nhm_cstates)
fprintf(stderr, " %5.2f", 100.0 * p->pc3/p->tsc);
fprintf(stderr, " %6.2f", 100.0 * p->pc3/p->tsc);
if (do_nhm_cstates)
fprintf(stderr, " %5.2f", 100.0 * p->pc6/p->tsc);
fprintf(stderr, " %6.2f", 100.0 * p->pc6/p->tsc);
if (do_snb_cstates)
fprintf(stderr, " %5.2f", 100.0 * p->pc7/p->tsc);
fprintf(stderr, " %6.2f", 100.0 * p->pc7/p->tsc);
if (extra_msr_offset)
fprintf(stderr, " 0x%016llx", p->extra_msr);
putc('\n', stderr);
Expand All @@ -267,12 +287,20 @@ void print_cnt(struct counters *p)
void print_counters(struct counters *counters)
{
struct counters *cnt;
static int printed;

print_header();

if (!printed || !summary_only)
print_header();

if (num_cpus > 1)
print_cnt(cnt_average);

printed = 1;

if (summary_only)
return;

for (cnt = counters; cnt != NULL; cnt = cnt->next)
print_cnt(cnt);

Expand Down Expand Up @@ -557,7 +585,8 @@ void insert_counters(struct counters **list,
return;
}

show_cpu = 1; /* there is more than one CPU */
if (!summary_only)
show_cpu = 1; /* there is more than one CPU */

/*
* insert on front of list.
Expand All @@ -575,13 +604,15 @@ void insert_counters(struct counters **list,

while (prev->next && (prev->next->pkg < new->pkg)) {
prev = prev->next;
show_pkg = 1; /* there is more than 1 package */
if (!summary_only)
show_pkg = 1; /* there is more than 1 package */
}

while (prev->next && (prev->next->pkg == new->pkg)
&& (prev->next->core < new->core)) {
prev = prev->next;
show_core = 1; /* there is more than 1 core */
if (!summary_only)
show_core = 1; /* there is more than 1 core */
}

while (prev->next && (prev->next->pkg == new->pkg)
Expand Down Expand Up @@ -1005,8 +1036,11 @@ void cmdline(int argc, char **argv)

progname = argv[0];

while ((opt = getopt(argc, argv, "+vi:M:")) != -1) {
while ((opt = getopt(argc, argv, "+svi:M:")) != -1) {
switch (opt) {
case 's':
summary_only++;
break;
case 'v':
verbose++;
break;
Expand Down

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