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Commit 8e180f3c authored by Len Brown's avatar Len Brown
Browse files

tools/power turbostat: add [-d MSR#][-D MSR#] options to print counter deltas 



 # turbostat -d 0x34
is useful for printing the number of SMI's within an interval
on Nehalem and newer processors.

where
 # turbostat -m 0x34
will simply print out the total SMI count since reset.

Suggested-by: Andi Kleen
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 2f32edf1

tools/power/x86/turbostat/turbostat.8

+31 −12
Original line number Diff line number Diff line
@@ -4,17 +4,11 @@ turbostat \- Report processor frequency and idle statistics 
.SH SYNOPSIS

.ft B

.B turbostat

.RB [ "\-s" ]

.RB [ "\-v" ]

.RB [ "\-m MSR#" ]

.RB [ "\-M MSR#" ]

.RB [ Options ]

.RB command

.br

.B turbostat

.RB [ "\-s" ]

.RB [ "\-v" ]

.RB [ "\-m MSR#" ]

.RB [ "\-M MSR#" ]

.RB [ Options ]

.RB [ "\-i interval_sec" ]

.SH DESCRIPTION

\fBturbostat \fP reports processor topology, frequency
@@ -37,11 +31,13 @@ The \fB-p\fP option limits output to the 1st thread in each package. 
.PP

The \fB-v\fP option increases verbosity.

.PP

The \fB-m MSR#\fP option dumps the specified 32-bit MSR,

in addition to the usual frequency and idle statistics.

The \fB-d MSR#\fP option includes the delta of the specified 32-bit MSR counter.

.PP

The \fB-M MSR#\fP option dumps the specified 64-bit MSR,

in addition to the usual frequency and idle statistics.

The \fB-D MSR#\fP option includes the delta of the specified 64-bit MSR counter.

.PP

The \fB-m MSR#\fP option includes the the specified 32-bit MSR value.

.PP

The \fB-M MSR#\fP option includes the the specified 64-bit MSR value.

.PP

The \fB-i interval_sec\fP option prints statistics every \fiinterval_sec\fP seconds.

The default is 5 seconds.
@@ -155,6 +151,29 @@ 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.

Using the -m option, you can display how many SMIs have fired since reset, or if there

are SMIs during the measurement interval, you can display the delta using the -d option.

.nf

[root@x980 ~]# turbostat -m 0x34

cor CPU    %c0  GHz  TSC   MSR 0x034    %c1    %c3    %c6   %pc3   %pc6

          1.41 1.82 3.38  0x00000000   8.92  37.82  51.85  17.37   0.55

  0   0   3.73 2.03 3.38  0x00000055   1.72  48.25  46.31  17.38   0.55

  0   6   0.14 1.63 3.38  0x00000056   5.30

  1   2   2.51 1.80 3.38  0x00000056  15.65  29.33  52.52

  1   8   0.10 1.65 3.38  0x00000056  18.05

  2   4   1.16 1.68 3.38  0x00000056   5.87  24.47  68.50

  2  10   0.10 1.63 3.38  0x00000056   6.93

  8   1   3.84 1.91 3.38  0x00000056   1.36  50.65  44.16

  8   7   0.08 1.64 3.38  0x00000056   5.12

  9   3   1.82 1.73 3.38  0x00000056   7.59  24.21  66.38

  9   9   0.09 1.68 3.38  0x00000056   9.32

 10   5   1.66 1.65 3.38  0x00000056  15.10  50.00  33.23

 10  11   1.72 1.65 3.38  0x00000056  15.05

^C

[root@x980 ~]# 

.fi

.SH NOTES



.B "turbostat "

tools/power/x86/turbostat/turbostat.c

+63 −32
Original line number Diff line number Diff line
@@ -65,6 +65,8 @@ unsigned int do_nehalem_turbo_ratio_limit; 
unsigned int do_ivt_turbo_ratio_limit;

unsigned int extra_msr_offset32;

unsigned int extra_msr_offset64;

unsigned int extra_delta_offset32;

unsigned int extra_delta_offset64;

double bclk;

unsigned int show_pkg;

unsigned int show_core;
@@ -86,7 +88,9 @@ struct thread_data { 
	unsigned long long mperf;

	unsigned long long c1;	/* derived */

	unsigned long long extra_msr64;

	unsigned int extra_msr32;

	unsigned long long extra_delta64;

	unsigned long long extra_msr32;

	unsigned long long extra_delta32;

	unsigned int cpu_id;

	unsigned int flags;

#define CPU_IS_FIRST_THREAD_IN_CORE	0x2
@@ -208,24 +212,6 @@ int get_msr(int cpu, off_t offset, unsigned long long *msr) 
	return 0;

}



/*

 * Truncate the 8 bytes we read from /dev/cpu/.../msr

 * to the 4 bytes requested

 */



int get_msr32(int cpu, off_t offset, unsigned int *msr)

{

	int retval;



	unsigned long long msr64;



	retval = get_msr(cpu, offset, &msr64);

	*msr = (unsigned int) msr64;



	return retval;

}





void print_header(void)

{

	if (show_pkg)
@@ -243,10 +229,14 @@ void print_header(void) 
	if (has_aperf)

		outp += sprintf(outp, "  GHz");

	outp += sprintf(outp, "  TSC");

	if (extra_delta_offset32)

		outp += sprintf(outp, "  delta 0x%03X", extra_delta_offset32);

	if (extra_delta_offset64)

		outp += sprintf(outp, "  DELTA 0x%03X", extra_delta_offset64);

	if (extra_msr_offset32)

		outp += sprintf(outp, "  MSR 0x%04X", extra_msr_offset32);

		outp += sprintf(outp, "   MSR 0x%03X", extra_msr_offset32);

	if (extra_msr_offset64)

		outp += sprintf(outp, "          MSR 0x%04X", extra_msr_offset64);

		outp += sprintf(outp, "           MSR 0x%03X", extra_msr_offset64);

	if (do_nhm_cstates)

		outp += sprintf(outp, "    %%c1");

	if (do_nhm_cstates)
@@ -278,7 +268,11 @@ int dump_counters(struct thread_data *t, struct core_data *c, 
		fprintf(stderr, "aperf: %016llX\n", t->aperf);

		fprintf(stderr, "mperf: %016llX\n", t->mperf);

		fprintf(stderr, "c1: %016llX\n", t->c1);

		fprintf(stderr, "msr0x%x: %08X\n",

		fprintf(stderr, "msr0x%x: %08llX\n",

			extra_delta_offset32, t->extra_delta32);

		fprintf(stderr, "msr0x%x: %016llX\n",

			extra_delta_offset64, t->extra_delta64);

		fprintf(stderr, "msr0x%x: %08llX\n",

			extra_msr_offset32, t->extra_msr32);

		fprintf(stderr, "msr0x%x: %016llX\n",

			extra_msr_offset64, t->extra_msr64);
@@ -385,9 +379,16 @@ int format_counters(struct thread_data *t, struct core_data *c, 
	/* TSC */

	outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);



	/* delta */

	if (extra_delta_offset32)

		outp += sprintf(outp, "  %11llu", t->extra_delta32);



	/* DELTA */

	if (extra_delta_offset64)

		outp += sprintf(outp, "  %11llu", t->extra_delta64);

	/* msr */

	if (extra_msr_offset32)

		outp += sprintf(outp, "  0x%08x", t->extra_msr32);

		outp += sprintf(outp, "  0x%08llx", t->extra_msr32);



	/* MSR */

	if (extra_msr_offset64)
@@ -533,8 +534,13 @@ delta_thread(struct thread_data *new, struct thread_data *old, 
		old->mperf = 1;	/* divide by 0 protection */

	}



	old->extra_delta32 = new->extra_delta32 - old->extra_delta32;

	old->extra_delta32 &= 0xFFFFFFFF;



	old->extra_delta64 = new->extra_delta64 - old->extra_delta64;



	/*

	 * Extra MSR is a snapshot, simply copy latest w/o subtracting

	 * Extra MSR is just a snapshot, simply copy latest w/o subtracting

	 */

	old->extra_msr32 = new->extra_msr32;

	old->extra_msr64 = new->extra_msr64;
@@ -565,6 +571,9 @@ void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data 
	t->mperf = 0;

	t->c1 = 0;



	t->extra_delta32 = 0;

	t->extra_delta64 = 0;



	/* tells format_counters to dump all fields from this set */

	t->flags = CPU_IS_FIRST_THREAD_IN_CORE | CPU_IS_FIRST_CORE_IN_PACKAGE;
@@ -585,6 +594,9 @@ int sum_counters(struct thread_data *t, struct core_data *c, 
	average.threads.mperf += t->mperf;

	average.threads.c1 += t->c1;



	average.threads.extra_delta32 += t->extra_delta32;

	average.threads.extra_delta64 += t->extra_delta64;



	/* sum per-core values only for 1st thread in core */

	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))

		return 0;
@@ -620,6 +632,11 @@ void compute_average(struct thread_data *t, struct core_data *c, 
	average.threads.mperf /= topo.num_cpus;

	average.threads.c1 /= topo.num_cpus;



	average.threads.extra_delta32 /= topo.num_cpus;

	average.threads.extra_delta32 &= 0xFFFFFFFF;



	average.threads.extra_delta64 /= topo.num_cpus;



	average.cores.c3 /= topo.num_cores;

	average.cores.c6 /= topo.num_cores;

	average.cores.c7 /= topo.num_cores;
@@ -661,10 +678,22 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) 
			return -4;

	}



	if (extra_msr_offset32)

		if (get_msr32(cpu, extra_msr_offset32, &t->extra_msr32))

	if (extra_delta_offset32) {

		if (get_msr(cpu, extra_delta_offset32, &t->extra_delta32))

			return -5;

		t->extra_delta32 &= 0xFFFFFFFF;

	}



	if (extra_delta_offset64)

		if (get_msr(cpu, extra_delta_offset64, &t->extra_delta64))

			return -5;



	if (extra_msr_offset32) {

		if (get_msr(cpu, extra_msr_offset32, &t->extra_msr32))

			return -5;

		t->extra_msr32 &= 0xFFFFFFFF;

	}



	if (extra_msr_offset64)

		if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))

			return -5;
@@ -1275,7 +1304,7 @@ void check_cpuid() 


void usage()

{

	fprintf(stderr, "%s: [-v] [-m msr#] [-M MSR#] [-i interval_sec | command ...]\n",

	fprintf(stderr, "%s: [-v][-d MSR#][-D MSR#][-m MSR#][-M MSR#][-i interval_sec | command ...]\n",

		progname);

	exit(1);

}
@@ -1565,7 +1594,7 @@ void cmdline(int argc, char **argv) 


	progname = argv[0];



	while ((opt = getopt(argc, argv, "+cpsvi:m:M:")) != -1) {

	while ((opt = getopt(argc, argv, "+cpsvid:D:m:M:")) != -1) {

		switch (opt) {

		case 'c':

			show_core_only++;
@@ -1582,15 +1611,17 @@ void cmdline(int argc, char **argv) 
		case 'i':

			interval_sec = atoi(optarg);

			break;

		case 'd':

			sscanf(optarg, "%x", &extra_delta_offset32);

			break;

		case 'D':

			sscanf(optarg, "%x", &extra_delta_offset64);

			break;

		case 'm':

			sscanf(optarg, "%x", &extra_msr_offset32);

			if (verbose > 1)

				fprintf(stderr, "msr 0x%X\n", extra_msr_offset32);

			break;

		case 'M':

			sscanf(optarg, "%x", &extra_msr_offset64);

			if (verbose > 1)

				fprintf(stderr, "MSR 0x%X\n", extra_msr_offset64);

			break;

		default:

			usage();