tools/power turbostat: add [-m MSR#] option
-m MSR# prints the specified MSR in 32-bit format -M MSR# prints the specified MSR in 64-bit format Signed-off-by: Len Brown <len.brown@intel.com>
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Len Brown
parent
130ff304f6
commit
2f32edf12c
@ -6,12 +6,14 @@ turbostat \- Report processor frequency and idle statistics
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.B turbostat
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.RB [ "\-s" ]
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.RB [ "\-v" ]
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.RB [ "\-m MSR#" ]
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.RB [ "\-M MSR#" ]
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.RB command
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.br
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.B turbostat
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.RB [ "\-s" ]
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.RB [ "\-v" ]
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.RB [ "\-m MSR#" ]
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.RB [ "\-M MSR#" ]
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.RB [ "\-i interval_sec" ]
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.SH DESCRIPTION
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@ -35,7 +37,10 @@ The \fB-p\fP option limits output to the 1st thread in each package.
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.PP
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The \fB-v\fP option increases verbosity.
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.PP
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The \fB-M MSR#\fP option dumps the specified MSR,
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The \fB-m MSR#\fP option dumps the specified 32-bit MSR,
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in addition to the usual frequency and idle statistics.
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.PP
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The \fB-M MSR#\fP option dumps the specified 64-bit MSR,
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in addition to the usual frequency and idle statistics.
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.PP
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The \fB-i interval_sec\fP option prints statistics every \fiinterval_sec\fP seconds.
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@ -165,6 +170,13 @@ may work poorly on Linux-2.6.20 through 2.6.29,
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as \fBacpi-cpufreq \fPperiodically cleared the APERF and MPERF
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in those kernels.
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If the TSC column does not make sense, then
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the other numbers will also make no sense.
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Turbostat is lightweight, and its data collection is not atomic.
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These issues are usually caused by an extremely short measurement
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interval (much less than 1 second), or system activity that prevents
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turbostat from being able to run on all CPUS to quickly collect data.
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The APERF, MPERF MSRs are defined to count non-halted cycles.
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Although it is not guaranteed by the architecture, turbostat assumes
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that they count at TSC rate, which is true on all processors tested to date.
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@ -63,7 +63,8 @@ unsigned int has_invariant_tsc;
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unsigned int do_nehalem_platform_info;
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unsigned int do_nehalem_turbo_ratio_limit;
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unsigned int do_ivt_turbo_ratio_limit;
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unsigned int extra_msr_offset;
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unsigned int extra_msr_offset32;
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unsigned int extra_msr_offset64;
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double bclk;
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unsigned int show_pkg;
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unsigned int show_core;
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@ -84,7 +85,8 @@ struct thread_data {
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unsigned long long aperf;
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unsigned long long mperf;
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unsigned long long c1; /* derived */
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unsigned long long extra_msr;
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unsigned long long extra_msr64;
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unsigned int extra_msr32;
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unsigned int cpu_id;
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unsigned int flags;
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#define CPU_IS_FIRST_THREAD_IN_CORE 0x2
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@ -206,6 +208,24 @@ int get_msr(int cpu, off_t offset, unsigned long long *msr)
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return 0;
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}
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/*
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* Truncate the 8 bytes we read from /dev/cpu/.../msr
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* to the 4 bytes requested
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*/
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int get_msr32(int cpu, off_t offset, unsigned int *msr)
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{
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int retval;
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unsigned long long msr64;
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retval = get_msr(cpu, offset, &msr64);
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*msr = (unsigned int) msr64;
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return retval;
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}
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void print_header(void)
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{
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if (show_pkg)
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@ -223,8 +243,10 @@ void print_header(void)
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if (has_aperf)
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outp += sprintf(outp, " GHz");
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outp += sprintf(outp, " TSC");
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if (extra_msr_offset)
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outp += sprintf(outp, " MSR 0x%04X", extra_msr_offset);
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if (extra_msr_offset32)
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outp += sprintf(outp, " MSR 0x%04X", extra_msr_offset32);
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if (extra_msr_offset64)
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outp += sprintf(outp, " MSR 0x%04X", extra_msr_offset64);
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if (do_nhm_cstates)
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outp += sprintf(outp, " %%c1");
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if (do_nhm_cstates)
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@ -256,8 +278,10 @@ int dump_counters(struct thread_data *t, struct core_data *c,
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fprintf(stderr, "aperf: %016llX\n", t->aperf);
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fprintf(stderr, "mperf: %016llX\n", t->mperf);
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fprintf(stderr, "c1: %016llX\n", t->c1);
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fprintf(stderr, "msr0x%x: %08X\n",
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extra_msr_offset32, t->extra_msr32);
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fprintf(stderr, "msr0x%x: %016llX\n",
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extra_msr_offset, t->extra_msr);
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extra_msr_offset64, t->extra_msr64);
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}
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if (c) {
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@ -361,9 +385,13 @@ int format_counters(struct thread_data *t, struct core_data *c,
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/* TSC */
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outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);
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/* msr */
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if (extra_msr_offset32)
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outp += sprintf(outp, " 0x%08x", t->extra_msr32);
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/* MSR */
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if (extra_msr_offset)
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outp += sprintf(outp, " 0x%016llx", t->extra_msr);
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if (extra_msr_offset64)
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outp += sprintf(outp, " 0x%016llx", t->extra_msr64);
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if (do_nhm_cstates) {
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if (!skip_c1)
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@ -506,9 +534,10 @@ delta_thread(struct thread_data *new, struct thread_data *old,
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}
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/*
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* for "extra msr", just copy the latest w/o subtracting
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* Extra MSR is a snapshot, simply copy latest w/o subtracting
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*/
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old->extra_msr = new->extra_msr;
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old->extra_msr32 = new->extra_msr32;
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old->extra_msr64 = new->extra_msr64;
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}
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int delta_cpu(struct thread_data *t, struct core_data *c,
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@ -632,8 +661,12 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
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return -4;
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}
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if (extra_msr_offset)
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if (get_msr(cpu, extra_msr_offset, &t->extra_msr))
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if (extra_msr_offset32)
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if (get_msr32(cpu, extra_msr_offset32, &t->extra_msr32))
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return -5;
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if (extra_msr_offset64)
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if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))
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return -5;
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/* collect core counters only for 1st thread in core */
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@ -1242,7 +1275,7 @@ void check_cpuid()
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void usage()
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{
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fprintf(stderr, "%s: [-v] [-M MSR#] [-i interval_sec | command ...]\n",
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fprintf(stderr, "%s: [-v] [-m msr#] [-M MSR#] [-i interval_sec | command ...]\n",
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progname);
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exit(1);
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}
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@ -1532,7 +1565,7 @@ void cmdline(int argc, char **argv)
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progname = argv[0];
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while ((opt = getopt(argc, argv, "+cpsvi:M:")) != -1) {
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while ((opt = getopt(argc, argv, "+cpsvi:m:M:")) != -1) {
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switch (opt) {
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case 'c':
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show_core_only++;
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@ -1549,10 +1582,15 @@ void cmdline(int argc, char **argv)
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case 'i':
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interval_sec = atoi(optarg);
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break;
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case 'M':
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sscanf(optarg, "%x", &extra_msr_offset);
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case 'm':
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sscanf(optarg, "%x", &extra_msr_offset32);
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if (verbose > 1)
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fprintf(stderr, "MSR 0x%X\n", extra_msr_offset);
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fprintf(stderr, "msr 0x%X\n", extra_msr_offset32);
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break;
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case 'M':
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sscanf(optarg, "%x", &extra_msr_offset64);
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if (verbose > 1)
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fprintf(stderr, "MSR 0x%X\n", extra_msr_offset64);
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break;
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default:
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usage();
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