unsigned int show_pkg;
unsigned int show_core;
unsigned int show_cpu;
+unsigned int show_pkg_only;
+unsigned int show_core_only;
+char *output_buffer, *outp;
int aperf_mperf_unstable;
int backwards_count;
char *progname;
-int num_cpus;
-cpu_set_t *cpu_present_set, *cpu_mask;
-size_t cpu_present_setsize, cpu_mask_size;
-
-struct counters {
- unsigned long long tsc; /* per thread */
- unsigned long long aperf; /* per thread */
- unsigned long long mperf; /* per thread */
- unsigned long long c1; /* per thread (calculated) */
- unsigned long long c3; /* per core */
- unsigned long long c6; /* per core */
- unsigned long long c7; /* per core */
- unsigned long long pc2; /* per package */
- unsigned long long pc3; /* per package */
- unsigned long long pc6; /* per package */
- unsigned long long pc7; /* per package */
- unsigned long long extra_msr; /* per thread */
- int pkg;
- int core;
- int cpu;
- struct counters *next;
-};
-
-struct counters *cnt_even;
-struct counters *cnt_odd;
-struct counters *cnt_delta;
-struct counters *cnt_average;
-struct timeval tv_even;
-struct timeval tv_odd;
-struct timeval tv_delta;
-
-int mark_cpu_present(int pkg, int core, int cpu)
+cpu_set_t *cpu_present_set, *cpu_affinity_set;
+size_t cpu_present_setsize, cpu_affinity_setsize;
+
+struct thread_data {
+ unsigned long long tsc;
+ unsigned long long aperf;
+ unsigned long long mperf;
+ unsigned long long c1; /* derived */
+ unsigned long long extra_msr;
+ unsigned int cpu_id;
+ unsigned int flags;
+#define CPU_IS_FIRST_THREAD_IN_CORE 0x2
+#define CPU_IS_FIRST_CORE_IN_PACKAGE 0x4
+} *thread_even, *thread_odd;
+
+struct core_data {
+ unsigned long long c3;
+ unsigned long long c6;
+ unsigned long long c7;
+ unsigned int core_id;
+} *core_even, *core_odd;
+
+struct pkg_data {
+ unsigned long long pc2;
+ unsigned long long pc3;
+ unsigned long long pc6;
+ unsigned long long pc7;
+ unsigned int package_id;
+} *package_even, *package_odd;
+
+#define ODD_COUNTERS thread_odd, core_odd, package_odd
+#define EVEN_COUNTERS thread_even, core_even, package_even
+
+#define GET_THREAD(thread_base, thread_no, core_no, pkg_no) \
+ (thread_base + (pkg_no) * topo.num_cores_per_pkg * \
+ topo.num_threads_per_core + \
+ (core_no) * topo.num_threads_per_core + (thread_no))
+#define GET_CORE(core_base, core_no, pkg_no) \
+ (core_base + (pkg_no) * topo.num_cores_per_pkg + (core_no))
+#define GET_PKG(pkg_base, pkg_no) (pkg_base + pkg_no)
+
+struct system_summary {
+ struct thread_data threads;
+ struct core_data cores;
+ struct pkg_data packages;
+} sum, average;
+
+
+struct topo_params {
+ int num_packages;
+ int num_cpus;
+ int num_cores;
+ int max_cpu_num;
+ int num_cores_per_pkg;
+ int num_threads_per_core;
+} topo;
+
+struct timeval tv_even, tv_odd, tv_delta;
+
+void setup_all_buffers(void);
+
+int cpu_is_not_present(int cpu)
{
- CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
- return 0;
+ return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
}
-
/*
- * cpu_mask_init(ncpus)
- *
- * allocate and clear cpu_mask
- * set cpu_mask_size
+ * run func(thread, core, package) in topology order
+ * skip non-present cpus
*/
-void cpu_mask_init(int ncpus)
+
+int for_all_cpus(int (func)(struct thread_data *, struct core_data *, struct pkg_data *),
+ struct thread_data *thread_base, struct core_data *core_base, struct pkg_data *pkg_base)
{
- cpu_mask = CPU_ALLOC(ncpus);
- if (cpu_mask == NULL) {
- perror("CPU_ALLOC");
- exit(3);
- }
- cpu_mask_size = CPU_ALLOC_SIZE(ncpus);
- CPU_ZERO_S(cpu_mask_size, cpu_mask);
+ int retval, pkg_no, core_no, thread_no;
- /*
- * Allocate and initialize cpu_present_set
- */
- cpu_present_set = CPU_ALLOC(ncpus);
- if (cpu_present_set == NULL) {
- perror("CPU_ALLOC");
- exit(3);
- }
- cpu_present_setsize = CPU_ALLOC_SIZE(ncpus);
- CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
- for_all_cpus(mark_cpu_present);
-}
+ for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
+ for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
+ for (thread_no = 0; thread_no <
+ topo.num_threads_per_core; ++thread_no) {
+ struct thread_data *t;
+ struct core_data *c;
+ struct pkg_data *p;
-void cpu_mask_uninit()
-{
- CPU_FREE(cpu_mask);
- cpu_mask = NULL;
- cpu_mask_size = 0;
- CPU_FREE(cpu_present_set);
- cpu_present_set = NULL;
- cpu_present_setsize = 0;
+ t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
+
+ if (cpu_is_not_present(t->cpu_id))
+ continue;
+
+ c = GET_CORE(core_base, core_no, pkg_no);
+ p = GET_PKG(pkg_base, pkg_no);
+
+ retval = func(t, c, p);
+ if (retval)
+ return retval;
+ }
+ }
+ }
+ return 0;
}
int cpu_migrate(int cpu)
{
- CPU_ZERO_S(cpu_mask_size, cpu_mask);
- CPU_SET_S(cpu, cpu_mask_size, cpu_mask);
- if (sched_setaffinity(0, cpu_mask_size, cpu_mask) == -1)
+ CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
+ CPU_SET_S(cpu, cpu_affinity_setsize, cpu_affinity_set);
+ if (sched_setaffinity(0, cpu_affinity_setsize, cpu_affinity_set) == -1)
return -1;
else
return 0;
void print_header(void)
{
if (show_pkg)
- fprintf(stderr, "pk");
+ outp += sprintf(outp, "pk");
if (show_pkg)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_core)
- fprintf(stderr, "cor");
+ outp += sprintf(outp, "cor");
if (show_cpu)
- fprintf(stderr, " CPU");
+ outp += sprintf(outp, " CPU");
if (show_pkg || show_core || show_cpu)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (do_nhm_cstates)
- fprintf(stderr, " %%c0");
+ outp += sprintf(outp, " %%c0");
if (has_aperf)
- fprintf(stderr, " GHz");
- fprintf(stderr, " TSC");
+ outp += sprintf(outp, " GHz");
+ outp += sprintf(outp, " TSC");
if (do_nhm_cstates)
- fprintf(stderr, " %%c1");
+ outp += sprintf(outp, " %%c1");
if (do_nhm_cstates)
- fprintf(stderr, " %%c3");
+ outp += sprintf(outp, " %%c3");
if (do_nhm_cstates)
- fprintf(stderr, " %%c6");
+ outp += sprintf(outp, " %%c6");
if (do_snb_cstates)
- fprintf(stderr, " %%c7");
+ outp += sprintf(outp, " %%c7");
if (do_snb_cstates)
- fprintf(stderr, " %%pc2");
+ outp += sprintf(outp, " %%pc2");
if (do_nhm_cstates)
- fprintf(stderr, " %%pc3");
+ outp += sprintf(outp, " %%pc3");
if (do_nhm_cstates)
- fprintf(stderr, " %%pc6");
+ outp += sprintf(outp, " %%pc6");
if (do_snb_cstates)
- fprintf(stderr, " %%pc7");
+ outp += sprintf(outp, " %%pc7");
if (extra_msr_offset)
- fprintf(stderr, " MSR 0x%x ", extra_msr_offset);
+ outp += sprintf(outp, " MSR 0x%x ", extra_msr_offset);
- putc('\n', stderr);
+ outp += sprintf(outp, "\n");
}
-void dump_cnt(struct counters *cnt)
+int dump_counters(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
{
- if (!cnt)
- return;
- if (cnt->pkg) fprintf(stderr, "package: %d ", cnt->pkg);
- if (cnt->core) fprintf(stderr, "core:: %d ", cnt->core);
- if (cnt->cpu) fprintf(stderr, "CPU: %d ", cnt->cpu);
- if (cnt->tsc) fprintf(stderr, "TSC: %016llX\n", cnt->tsc);
- if (cnt->c3) fprintf(stderr, "c3: %016llX\n", cnt->c3);
- if (cnt->c6) fprintf(stderr, "c6: %016llX\n", cnt->c6);
- if (cnt->c7) fprintf(stderr, "c7: %016llX\n", cnt->c7);
- if (cnt->aperf) fprintf(stderr, "aperf: %016llX\n", cnt->aperf);
- if (cnt->pc2) fprintf(stderr, "pc2: %016llX\n", cnt->pc2);
- if (cnt->pc3) fprintf(stderr, "pc3: %016llX\n", cnt->pc3);
- if (cnt->pc6) fprintf(stderr, "pc6: %016llX\n", cnt->pc6);
- if (cnt->pc7) fprintf(stderr, "pc7: %016llX\n", cnt->pc7);
- if (cnt->extra_msr) fprintf(stderr, "msr0x%x: %016llX\n", extra_msr_offset, cnt->extra_msr);
-}
+ fprintf(stderr, "t %p, c %p, p %p\n", t, c, p);
+
+ if (t) {
+ fprintf(stderr, "CPU: %d flags 0x%x\n", t->cpu_id, t->flags);
+ fprintf(stderr, "TSC: %016llX\n", t->tsc);
+ 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: %016llX\n",
+ extra_msr_offset, t->extra_msr);
+ }
-void dump_list(struct counters *cnt)
-{
- printf("dump_list 0x%p\n", cnt);
+ if (c) {
+ fprintf(stderr, "core: %d\n", c->core_id);
+ fprintf(stderr, "c3: %016llX\n", c->c3);
+ fprintf(stderr, "c6: %016llX\n", c->c6);
+ fprintf(stderr, "c7: %016llX\n", c->c7);
+ }
- for (; cnt; cnt = cnt->next)
- dump_cnt(cnt);
+ if (p) {
+ fprintf(stderr, "package: %d\n", p->package_id);
+ fprintf(stderr, "pc2: %016llX\n", p->pc2);
+ fprintf(stderr, "pc3: %016llX\n", p->pc3);
+ fprintf(stderr, "pc6: %016llX\n", p->pc6);
+ fprintf(stderr, "pc7: %016llX\n", p->pc7);
+ }
+ return 0;
}
/*
* TSC: "TSC" 3 columns %3.2
* percentage " %pc3" %6.2
*/
-void print_cnt(struct counters *p)
+int format_counters(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
{
double interval_float;
+ /* if showing only 1st thread in core and this isn't one, bail out */
+ if (show_core_only && !(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ return 0;
+
+ /* if showing only 1st thread in pkg and this isn't one, bail out */
+ if (show_pkg_only && !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ return 0;
+
interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
- /* topology columns, print blanks on 1st (average) line */
- if (p == cnt_average) {
+ /* topo columns, print blanks on 1st (average) line */
+ if (t == &average.threads) {
if (show_pkg)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_pkg && show_core)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_core)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (show_cpu)
- fprintf(stderr, " " " ");
+ outp += sprintf(outp, " " " ");
} else {
- if (show_pkg)
- fprintf(stderr, "%2d", p->pkg);
+ if (show_pkg) {
+ if (p)
+ outp += sprintf(outp, "%2d", p->package_id);
+ else
+ outp += sprintf(outp, " ");
+ }
if (show_pkg && show_core)
- fprintf(stderr, " ");
- if (show_core)
- fprintf(stderr, "%3d", p->core);
+ outp += sprintf(outp, " ");
+ if (show_core) {
+ if (c)
+ outp += sprintf(outp, "%3d", c->core_id);
+ else
+ outp += sprintf(outp, " ");
+ }
if (show_cpu)
- fprintf(stderr, " %3d", p->cpu);
+ outp += sprintf(outp, " %3d", t->cpu_id);
}
/* %c0 */
if (do_nhm_cstates) {
if (show_pkg || show_core || show_cpu)
- fprintf(stderr, " ");
+ outp += sprintf(outp, " ");
if (!skip_c0)
- fprintf(stderr, "%6.2f", 100.0 * p->mperf/p->tsc);
+ outp += sprintf(outp, "%6.2f", 100.0 * t->mperf/t->tsc);
else
- fprintf(stderr, " ****");
+ outp += sprintf(outp, " ****");
}
/* GHz */
if (has_aperf) {
if (!aperf_mperf_unstable) {
- fprintf(stderr, " %3.2f",
- 1.0 * p->tsc / units * p->aperf /
- p->mperf / interval_float);
+ outp += sprintf(outp, " %3.2f",
+ 1.0 * t->tsc / units * t->aperf /
+ t->mperf / interval_float);
} else {
- if (p->aperf > p->tsc || p->mperf > p->tsc) {
- fprintf(stderr, " ***");
+ if (t->aperf > t->tsc || t->mperf > t->tsc) {
+ outp += sprintf(outp, " ***");
} else {
- fprintf(stderr, "%3.1f*",
- 1.0 * p->tsc /
- units * p->aperf /
- p->mperf / interval_float);
+ outp += sprintf(outp, "%3.1f*",
+ 1.0 * t->tsc /
+ units * t->aperf /
+ t->mperf / interval_float);
}
}
}
/* TSC */
- fprintf(stderr, "%5.2f", 1.0 * p->tsc/units/interval_float);
+ outp += sprintf(outp, "%5.2f", 1.0 * t->tsc/units/interval_float);
if (do_nhm_cstates) {
if (!skip_c1)
- fprintf(stderr, " %6.2f", 100.0 * p->c1/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * t->c1/t->tsc);
else
- fprintf(stderr, " ****");
+ outp += sprintf(outp, " ****");
}
+
+ /* print per-core data only for 1st thread in core */
+ if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ goto done;
+
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->c3/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc);
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->c6/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * c->c6/t->tsc);
if (do_snb_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->c7/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * c->c7/t->tsc);
+
+ /* print per-package data only for 1st core in package */
+ if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ goto done;
+
if (do_snb_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc2/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc);
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc3/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/t->tsc);
if (do_nhm_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc6/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc6/t->tsc);
if (do_snb_cstates)
- fprintf(stderr, " %6.2f", 100.0 * p->pc7/p->tsc);
+ outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc);
+done:
if (extra_msr_offset)
- fprintf(stderr, " 0x%016llx", p->extra_msr);
- putc('\n', stderr);
+ outp += sprintf(outp, " 0x%016llx", t->extra_msr);
+ outp += sprintf(outp, "\n");
+
+ return 0;
}
-void print_counters(struct counters *counters)
+void flush_stdout()
+{
+ fputs(output_buffer, stdout);
+ outp = output_buffer;
+}
+void flush_stderr()
+{
+ fputs(output_buffer, stderr);
+ outp = output_buffer;
+}
+void format_all_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
- struct counters *cnt;
static int printed;
-
if (!printed || !summary_only)
print_header();
- if (num_cpus > 1)
- print_cnt(cnt_average);
+ if (topo.num_cpus > 1)
+ format_counters(&average.threads, &average.cores,
+ &average.packages);
printed = 1;
if (summary_only)
return;
- for (cnt = counters; cnt != NULL; cnt = cnt->next)
- print_cnt(cnt);
-
+ for_all_cpus(format_counters, t, c, p);
}
-#define SUBTRACT_COUNTER(after, before, delta) (delta = (after - before), (before > after))
+void
+delta_package(struct pkg_data *new, struct pkg_data *old)
+{
+ old->pc2 = new->pc2 - old->pc2;
+ old->pc3 = new->pc3 - old->pc3;
+ old->pc6 = new->pc6 - old->pc6;
+ old->pc7 = new->pc7 - old->pc7;
+}
-int compute_delta(struct counters *after,
- struct counters *before, struct counters *delta)
+void
+delta_core(struct core_data *new, struct core_data *old)
{
- int errors = 0;
- int perf_err = 0;
+ old->c3 = new->c3 - old->c3;
+ old->c6 = new->c6 - old->c6;
+ old->c7 = new->c7 - old->c7;
+}
- skip_c0 = skip_c1 = 0;
+void
+delta_thread(struct thread_data *new, struct thread_data *old,
+ struct core_data *core_delta)
+{
+ old->tsc = new->tsc - old->tsc;
+
+ /* check for TSC < 1 Mcycles over interval */
+ if (old->tsc < (1000 * 1000)) {
+ fprintf(stderr, "Insanely slow TSC rate, TSC stops in idle?\n");
+ fprintf(stderr, "You can disable all c-states by booting with \"idle=poll\"\n");
+ fprintf(stderr, "or just the deep ones with \"processor.max_cstate=1\"\n");
+ exit(-3);
+ }
- for ( ; after && before && delta;
- after = after->next, before = before->next, delta = delta->next) {
- if (before->cpu != after->cpu) {
- printf("cpu configuration changed: %d != %d\n",
- before->cpu, after->cpu);
- return -1;
- }
+ old->c1 = new->c1 - old->c1;
- if (SUBTRACT_COUNTER(after->tsc, before->tsc, delta->tsc)) {
- fprintf(stderr, "cpu%d TSC went backwards %llX to %llX\n",
- before->cpu, before->tsc, after->tsc);
- errors++;
- }
- /* check for TSC < 1 Mcycles over interval */
- if (delta->tsc < (1000 * 1000)) {
- fprintf(stderr, "Insanely slow TSC rate,"
- " TSC stops in idle?\n");
- fprintf(stderr, "You can disable all c-states"
- " by booting with \"idle=poll\"\n");
- fprintf(stderr, "or just the deep ones with"
- " \"processor.max_cstate=1\"\n");
- exit(-3);
- }
- if (SUBTRACT_COUNTER(after->c3, before->c3, delta->c3)) {
- fprintf(stderr, "cpu%d c3 counter went backwards %llX to %llX\n",
- before->cpu, before->c3, after->c3);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->c6, before->c6, delta->c6)) {
- fprintf(stderr, "cpu%d c6 counter went backwards %llX to %llX\n",
- before->cpu, before->c6, after->c6);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->c7, before->c7, delta->c7)) {
- fprintf(stderr, "cpu%d c7 counter went backwards %llX to %llX\n",
- before->cpu, before->c7, after->c7);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc2, before->pc2, delta->pc2)) {
- fprintf(stderr, "cpu%d pc2 counter went backwards %llX to %llX\n",
- before->cpu, before->pc2, after->pc2);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc3, before->pc3, delta->pc3)) {
- fprintf(stderr, "cpu%d pc3 counter went backwards %llX to %llX\n",
- before->cpu, before->pc3, after->pc3);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc6, before->pc6, delta->pc6)) {
- fprintf(stderr, "cpu%d pc6 counter went backwards %llX to %llX\n",
- before->cpu, before->pc6, after->pc6);
- errors++;
- }
- if (SUBTRACT_COUNTER(after->pc7, before->pc7, delta->pc7)) {
- fprintf(stderr, "cpu%d pc7 counter went backwards %llX to %llX\n",
- before->cpu, before->pc7, after->pc7);
- errors++;
- }
+ if ((new->aperf > old->aperf) && (new->mperf > old->mperf)) {
+ old->aperf = new->aperf - old->aperf;
+ old->mperf = new->mperf - old->mperf;
+ } else {
- perf_err = SUBTRACT_COUNTER(after->aperf, before->aperf, delta->aperf);
- if (perf_err) {
- fprintf(stderr, "cpu%d aperf counter went backwards %llX to %llX\n",
- before->cpu, before->aperf, after->aperf);
- }
- perf_err |= SUBTRACT_COUNTER(after->mperf, before->mperf, delta->mperf);
- if (perf_err) {
- fprintf(stderr, "cpu%d mperf counter went backwards %llX to %llX\n",
- before->cpu, before->mperf, after->mperf);
- }
- if (perf_err) {
- if (!aperf_mperf_unstable) {
- fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
- fprintf(stderr, "* Frequency results do not cover entire interval *\n");
- fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
+ if (!aperf_mperf_unstable) {
+ fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
+ fprintf(stderr, "* Frequency results do not cover entire interval *\n");
+ fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
- aperf_mperf_unstable = 1;
- }
- /*
- * mperf delta is likely a huge "positive" number
- * can not use it for calculating c0 time
- */
- skip_c0 = 1;
- skip_c1 = 1;
+ aperf_mperf_unstable = 1;
}
-
/*
- * As mperf and tsc collection are not atomic,
- * it is possible for mperf's non-halted cycles
- * to exceed TSC's all cycles: show c1 = 0% in that case.
+ * mperf delta is likely a huge "positive" number
+ * can not use it for calculating c0 time
*/
- if (delta->mperf > delta->tsc)
- delta->c1 = 0;
- else /* normal case, derive c1 */
- delta->c1 = delta->tsc - delta->mperf
- - delta->c3 - delta->c6 - delta->c7;
+ skip_c0 = 1;
+ skip_c1 = 1;
+ }
- if (delta->mperf == 0)
- delta->mperf = 1; /* divide by 0 protection */
- /*
- * for "extra msr", just copy the latest w/o subtracting
- */
- delta->extra_msr = after->extra_msr;
- if (errors) {
- fprintf(stderr, "ERROR cpu%d before:\n", before->cpu);
- dump_cnt(before);
- fprintf(stderr, "ERROR cpu%d after:\n", before->cpu);
- dump_cnt(after);
- errors = 0;
- }
+ /*
+ * As mperf and tsc collection are not atomic,
+ * it is possible for mperf's non-halted cycles
+ * to exceed TSC's all cycles: show c1 = 0% in that case.
+ */
+ if (old->mperf > old->tsc)
+ old->c1 = 0;
+ else {
+ /* normal case, derive c1 */
+ old->c1 = old->tsc - old->mperf - core_delta->c3
+ - core_delta->c6 - core_delta->c7;
+ }
+ if (old->mperf == 0) {
+ if (verbose) fprintf(stderr, "cpu%d MPERF 0!\n", old->cpu_id);
+ old->mperf = 1; /* divide by 0 protection */
}
+
+ /*
+ * for "extra msr", just copy the latest w/o subtracting
+ */
+ old->extra_msr = new->extra_msr;
+}
+
+int delta_cpu(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p, struct thread_data *t2,
+ struct core_data *c2, struct pkg_data *p2)
+{
+ /* calculate core delta only for 1st thread in core */
+ if (t->flags & CPU_IS_FIRST_THREAD_IN_CORE)
+ delta_core(c, c2);
+
+ /* always calculate thread delta */
+ delta_thread(t, t2, c2); /* c2 is core delta */
+
+ /* calculate package delta only for 1st core in package */
+ if (t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE)
+ delta_package(p, p2);
+
return 0;
}
-void compute_average(struct counters *delta, struct counters *avg)
+void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
+{
+ t->tsc = 0;
+ t->aperf = 0;
+ t->mperf = 0;
+ t->c1 = 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;
+
+ c->c3 = 0;
+ c->c6 = 0;
+ c->c7 = 0;
+
+ p->pc2 = 0;
+ p->pc3 = 0;
+ p->pc6 = 0;
+ p->pc7 = 0;
+}
+int sum_counters(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
{
- struct counters *sum;
+ average.threads.tsc += t->tsc;
+ average.threads.aperf += t->aperf;
+ average.threads.mperf += t->mperf;
+ average.threads.c1 += t->c1;
- sum = calloc(1, sizeof(struct counters));
- if (sum == NULL) {
- perror("calloc sum");
- exit(1);
- }
+ /* sum per-core values only for 1st thread in core */
+ if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ return 0;
- for (; delta; delta = delta->next) {
- sum->tsc += delta->tsc;
- sum->c1 += delta->c1;
- sum->c3 += delta->c3;
- sum->c6 += delta->c6;
- sum->c7 += delta->c7;
- sum->aperf += delta->aperf;
- sum->mperf += delta->mperf;
- sum->pc2 += delta->pc2;
- sum->pc3 += delta->pc3;
- sum->pc6 += delta->pc6;
- sum->pc7 += delta->pc7;
- }
- avg->tsc = sum->tsc/num_cpus;
- avg->c1 = sum->c1/num_cpus;
- avg->c3 = sum->c3/num_cpus;
- avg->c6 = sum->c6/num_cpus;
- avg->c7 = sum->c7/num_cpus;
- avg->aperf = sum->aperf/num_cpus;
- avg->mperf = sum->mperf/num_cpus;
- avg->pc2 = sum->pc2/num_cpus;
- avg->pc3 = sum->pc3/num_cpus;
- avg->pc6 = sum->pc6/num_cpus;
- avg->pc7 = sum->pc7/num_cpus;
-
- free(sum);
+ average.cores.c3 += c->c3;
+ average.cores.c6 += c->c6;
+ average.cores.c7 += c->c7;
+
+ /* sum per-pkg values only for 1st core in pkg */
+ if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ return 0;
+
+ average.packages.pc2 += p->pc2;
+ average.packages.pc3 += p->pc3;
+ average.packages.pc6 += p->pc6;
+ average.packages.pc7 += p->pc7;
+
+ return 0;
+}
+/*
+ * sum the counters for all cpus in the system
+ * compute the weighted average
+ */
+void compute_average(struct thread_data *t, struct core_data *c,
+ struct pkg_data *p)
+{
+ clear_counters(&average.threads, &average.cores, &average.packages);
+
+ for_all_cpus(sum_counters, t, c, p);
+
+ average.threads.tsc /= topo.num_cpus;
+ average.threads.aperf /= topo.num_cpus;
+ average.threads.mperf /= topo.num_cpus;
+ average.threads.c1 /= topo.num_cpus;
+
+ average.cores.c3 /= topo.num_cores;
+ average.cores.c6 /= topo.num_cores;
+ average.cores.c7 /= topo.num_cores;
+
+ average.packages.pc2 /= topo.num_packages;
+ average.packages.pc3 /= topo.num_packages;
+ average.packages.pc6 /= topo.num_packages;
+ average.packages.pc7 /= topo.num_packages;
}
-int get_counters(struct counters *cnt)
+static unsigned long long rdtsc(void)
{
- for ( ; cnt; cnt = cnt->next) {
+ unsigned int low, high;
- if (cpu_migrate(cnt->cpu))
- return -1;
+ asm volatile("rdtsc" : "=a" (low), "=d" (high));
- if (get_msr(cnt->cpu, MSR_TSC, &cnt->tsc))
- return -1;
+ return low | ((unsigned long long)high) << 32;
+}
- if (has_aperf) {
- if (get_msr(cnt->cpu, MSR_APERF, &cnt->aperf))
- return -1;
- if (get_msr(cnt->cpu, MSR_MPERF, &cnt->mperf))
- return -1;
- }
- if (do_nhm_cstates) {
- if (get_msr(cnt->cpu, MSR_CORE_C3_RESIDENCY, &cnt->c3))
- return -1;
- if (get_msr(cnt->cpu, MSR_CORE_C6_RESIDENCY, &cnt->c6))
- return -1;
- }
+/*
+ * get_counters(...)
+ * migrate to cpu
+ * acquire and record local counters for that cpu
+ */
+int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
+{
+ int cpu = t->cpu_id;
- if (do_snb_cstates)
- if (get_msr(cnt->cpu, MSR_CORE_C7_RESIDENCY, &cnt->c7))
- return -1;
+ if (cpu_migrate(cpu))
+ return -1;
- if (do_nhm_cstates) {
- if (get_msr(cnt->cpu, MSR_PKG_C3_RESIDENCY, &cnt->pc3))
- return -1;
- if (get_msr(cnt->cpu, MSR_PKG_C6_RESIDENCY, &cnt->pc6))
- return -1;
- }
- if (do_snb_cstates) {
- if (get_msr(cnt->cpu, MSR_PKG_C2_RESIDENCY, &cnt->pc2))
- return -1;
- if (get_msr(cnt->cpu, MSR_PKG_C7_RESIDENCY, &cnt->pc7))
- return -1;
- }
- if (extra_msr_offset)
- if (get_msr(cnt->cpu, extra_msr_offset, &cnt->extra_msr))
- return -1;
+ t->tsc = rdtsc(); /* we are running on local CPU of interest */
+
+ if (has_aperf) {
+ if (get_msr(cpu, MSR_APERF, &t->aperf))
+ return -3;
+ if (get_msr(cpu, MSR_MPERF, &t->mperf))
+ return -4;
+ }
+
+ if (extra_msr_offset)
+ if (get_msr(cpu, extra_msr_offset, &t->extra_msr))
+ return -5;
+
+ /* collect core counters only for 1st thread in core */
+ if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
+ return 0;
+
+ if (do_nhm_cstates) {
+ if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
+ return -6;
+ if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
+ return -7;
+ }
+
+ if (do_snb_cstates)
+ if (get_msr(cpu, MSR_CORE_C7_RESIDENCY, &c->c7))
+ return -8;
+
+ /* collect package counters only for 1st core in package */
+ if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
+ return 0;
+
+ if (do_nhm_cstates) {
+ if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
+ return -9;
+ if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
+ return -10;
+ }
+ if (do_snb_cstates) {
+ if (get_msr(cpu, MSR_PKG_C2_RESIDENCY, &p->pc2))
+ return -11;
+ if (get_msr(cpu, MSR_PKG_C7_RESIDENCY, &p->pc7))
+ return -12;
}
return 0;
}
-void print_nehalem_info(void)
+void print_verbose_header(void)
{
unsigned long long msr;
unsigned int ratio;
}
-void free_counter_list(struct counters *list)
+void free_all_buffers(void)
{
- struct counters *p;
+ CPU_FREE(cpu_present_set);
+ cpu_present_set = NULL;
+ cpu_present_set = 0;
- for (p = list; p; ) {
- struct counters *free_me;
+ CPU_FREE(cpu_affinity_set);
+ cpu_affinity_set = NULL;
+ cpu_affinity_setsize = 0;
- free_me = p;
- p = p->next;
- free(free_me);
- }
-}
+ free(thread_even);
+ free(core_even);
+ free(package_even);
-void free_all_counters(void)
-{
- free_counter_list(cnt_even);
- cnt_even = NULL;
+ thread_even = NULL;
+ core_even = NULL;
+ package_even = NULL;
- free_counter_list(cnt_odd);
- cnt_odd = NULL;
+ free(thread_odd);
+ free(core_odd);
+ free(package_odd);
- free_counter_list(cnt_delta);
- cnt_delta = NULL;
+ thread_odd = NULL;
+ core_odd = NULL;
+ package_odd = NULL;
- free_counter_list(cnt_average);
- cnt_average = NULL;
+ free(output_buffer);
+ output_buffer = NULL;
+ outp = NULL;
}
-void insert_counters(struct counters **list,
- struct counters *new)
+/*
+ * cpu_is_first_sibling_in_core(cpu)
+ * return 1 if given CPU is 1st HT sibling in the core
+ */
+int cpu_is_first_sibling_in_core(int cpu)
{
- struct counters *prev;
-
- /*
- * list was empty
- */
- if (*list == NULL) {
- new->next = *list;
- *list = new;
- return;
- }
-
- if (!summary_only)
- show_cpu = 1; /* there is more than one CPU */
-
- /*
- * insert on front of list.
- * It is sorted by ascending package#, core#, cpu#
- */
- if (((*list)->pkg > new->pkg) ||
- (((*list)->pkg == new->pkg) && ((*list)->core > new->core)) ||
- (((*list)->pkg == new->pkg) && ((*list)->core == new->core) && ((*list)->cpu > new->cpu))) {
- new->next = *list;
- *list = new;
- return;
- }
-
- prev = *list;
-
- while (prev->next && (prev->next->pkg < new->pkg)) {
- prev = prev->next;
- 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;
- if (!summary_only)
- show_core = 1; /* there is more than 1 core */
- }
+ char path[64];
+ FILE *filep;
+ int first_cpu;
- while (prev->next && (prev->next->pkg == new->pkg)
- && (prev->next->core == new->core)
- && (prev->next->cpu < new->cpu)) {
- prev = prev->next;
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
+ exit(1);
}
-
- /*
- * insert after "prev"
- */
- new->next = prev->next;
- prev->next = new;
+ fscanf(filep, "%d", &first_cpu);
+ fclose(filep);
+ return (cpu == first_cpu);
}
-void alloc_new_counters(int pkg, int core, int cpu)
+/*
+ * cpu_is_first_core_in_package(cpu)
+ * return 1 if given CPU is 1st core in package
+ */
+int cpu_is_first_core_in_package(int cpu)
{
- struct counters *new;
-
- if (verbose > 1)
- printf("pkg%d core%d, cpu%d\n", pkg, core, cpu);
-
- new = (struct counters *)calloc(1, sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
- exit(1);
- }
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- insert_counters(&cnt_odd, new);
-
- new = (struct counters *)calloc(1,
- sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
- exit(1);
- }
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- insert_counters(&cnt_even, new);
-
- new = (struct counters *)calloc(1, sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
- exit(1);
- }
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- insert_counters(&cnt_delta, new);
+ char path[64];
+ FILE *filep;
+ int first_cpu;
- new = (struct counters *)calloc(1, sizeof(struct counters));
- if (new == NULL) {
- perror("calloc");
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
exit(1);
}
- new->pkg = pkg;
- new->core = core;
- new->cpu = cpu;
- cnt_average = new;
+ fscanf(filep, "%d", &first_cpu);
+ fclose(filep);
+ return (cpu == first_cpu);
}
int get_physical_package_id(int cpu)
{
- char path[64];
+ char path[80];
FILE *filep;
int pkg;
int get_core_id(int cpu)
{
- char path[64];
+ char path[80];
FILE *filep;
int core;
return core;
}
+int get_num_ht_siblings(int cpu)
+{
+ char path[80];
+ FILE *filep;
+ int sib1, sib2;
+ int matches;
+ char character;
+
+ sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
+ exit(1);
+ }
+ /*
+ * file format:
+ * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
+ * otherwinse 1 sibling (self).
+ */
+ matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
+
+ fclose(filep);
+
+ if (matches == 3)
+ return 2;
+ else
+ return 1;
+}
+
/*
- * run func(pkg, core, cpu) on every cpu in /proc/stat
+ * run func(thread, core, package) in topology order
+ * skip non-present cpus
*/
-int for_all_cpus(void (func)(int, int, int))
+int for_all_cpus_2(int (func)(struct thread_data *, struct core_data *,
+ struct pkg_data *, struct thread_data *, struct core_data *,
+ struct pkg_data *), struct thread_data *thread_base,
+ struct core_data *core_base, struct pkg_data *pkg_base,
+ struct thread_data *thread_base2, struct core_data *core_base2,
+ struct pkg_data *pkg_base2)
+{
+ int retval, pkg_no, core_no, thread_no;
+
+ for (pkg_no = 0; pkg_no < topo.num_packages; ++pkg_no) {
+ for (core_no = 0; core_no < topo.num_cores_per_pkg; ++core_no) {
+ for (thread_no = 0; thread_no <
+ topo.num_threads_per_core; ++thread_no) {
+ struct thread_data *t, *t2;
+ struct core_data *c, *c2;
+ struct pkg_data *p, *p2;
+
+ t = GET_THREAD(thread_base, thread_no, core_no, pkg_no);
+
+ if (cpu_is_not_present(t->cpu_id))
+ continue;
+
+ t2 = GET_THREAD(thread_base2, thread_no, core_no, pkg_no);
+
+ c = GET_CORE(core_base, core_no, pkg_no);
+ c2 = GET_CORE(core_base2, core_no, pkg_no);
+
+ p = GET_PKG(pkg_base, pkg_no);
+ p2 = GET_PKG(pkg_base2, pkg_no);
+
+ retval = func(t, c, p, t2, c2, p2);
+ if (retval)
+ return retval;
+ }
+ }
+ }
+ return 0;
+}
+
+/*
+ * run func(cpu) on every cpu in /proc/stat
+ * return max_cpu number
+ */
+int for_all_proc_cpus(int (func)(int))
{
FILE *fp;
- int cpu_count;
+ int cpu_num;
int retval;
fp = fopen(proc_stat, "r");
exit(1);
}
- for (cpu_count = 0; ; cpu_count++) {
- int cpu;
-
- retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu);
+ while (1) {
+ retval = fscanf(fp, "cpu%u %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n", &cpu_num);
if (retval != 1)
break;
- func(get_physical_package_id(cpu), get_core_id(cpu), cpu);
+ retval = func(cpu_num);
+ if (retval) {
+ fclose(fp);
+ return(retval);
+ }
}
fclose(fp);
- return cpu_count;
+ return 0;
}
void re_initialize(void)
{
- free_all_counters();
- num_cpus = for_all_cpus(alloc_new_counters);
- cpu_mask_uninit();
- cpu_mask_init(num_cpus);
- printf("turbostat: re-initialized with num_cpus %d\n", num_cpus);
+ free_all_buffers();
+ setup_all_buffers();
+ printf("turbostat: re-initialized with num_cpus %d\n", topo.num_cpus);
}
-void dummy(int pkg, int core, int cpu) { return; }
+
/*
- * check to see if a cpu came on-line
+ * count_cpus()
+ * remember the last one seen, it will be the max
*/
-int verify_num_cpus(void)
+int count_cpus(int cpu)
{
- int new_num_cpus;
+ if (topo.max_cpu_num < cpu)
+ topo.max_cpu_num = cpu;
- new_num_cpus = for_all_cpus(dummy);
-
- if (new_num_cpus != num_cpus) {
- if (verbose)
- printf("num_cpus was %d, is now %d\n",
- num_cpus, new_num_cpus);
- return -1;
- }
+ topo.num_cpus += 1;
+ return 0;
+}
+int mark_cpu_present(int cpu)
+{
+ CPU_SET_S(cpu, cpu_present_setsize, cpu_present_set);
return 0;
}
void turbostat_loop()
{
+ int retval;
+
restart:
- get_counters(cnt_even);
+ retval = for_all_cpus(get_counters, EVEN_COUNTERS);
+ if (retval) {
+ re_initialize();
+ goto restart;
+ }
gettimeofday(&tv_even, (struct timezone *)NULL);
while (1) {
- if (verify_num_cpus()) {
+ if (for_all_proc_cpus(cpu_is_not_present)) {
re_initialize();
goto restart;
}
sleep(interval_sec);
- if (get_counters(cnt_odd)) {
+ retval = for_all_cpus(get_counters, ODD_COUNTERS);
+ if (retval) {
re_initialize();
goto restart;
}
gettimeofday(&tv_odd, (struct timezone *)NULL);
- compute_delta(cnt_odd, cnt_even, cnt_delta);
timersub(&tv_odd, &tv_even, &tv_delta);
- compute_average(cnt_delta, cnt_average);
- print_counters(cnt_delta);
+ for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
+ compute_average(EVEN_COUNTERS);
+ format_all_counters(EVEN_COUNTERS);
+ flush_stdout();
sleep(interval_sec);
- if (get_counters(cnt_even)) {
+ retval = for_all_cpus(get_counters, EVEN_COUNTERS);
+ if (retval) {
re_initialize();
goto restart;
}
gettimeofday(&tv_even, (struct timezone *)NULL);
- compute_delta(cnt_even, cnt_odd, cnt_delta);
timersub(&tv_even, &tv_odd, &tv_delta);
- compute_average(cnt_delta, cnt_average);
- print_counters(cnt_delta);
+ for_all_cpus_2(delta_cpu, EVEN_COUNTERS, ODD_COUNTERS);
+ compute_average(ODD_COUNTERS);
+ format_all_counters(ODD_COUNTERS);
+ flush_stdout();
}
}
return 0;
}
+void topology_probe()
+{
+ int i;
+ int max_core_id = 0;
+ int max_package_id = 0;
+ int max_siblings = 0;
+ struct cpu_topology {
+ int core_id;
+ int physical_package_id;
+ } *cpus;
+
+ /* Initialize num_cpus, max_cpu_num */
+ topo.num_cpus = 0;
+ topo.max_cpu_num = 0;
+ for_all_proc_cpus(count_cpus);
+ if (!summary_only && topo.num_cpus > 1)
+ show_cpu = 1;
+
+ if (verbose > 1)
+ fprintf(stderr, "num_cpus %d max_cpu_num %d\n", topo.num_cpus, topo.max_cpu_num);
+
+ cpus = calloc(1, (topo.max_cpu_num + 1) * sizeof(struct cpu_topology));
+ if (cpus == NULL) {
+ perror("calloc cpus");
+ exit(1);
+ }
+
+ /*
+ * Allocate and initialize cpu_present_set
+ */
+ cpu_present_set = CPU_ALLOC((topo.max_cpu_num + 1));
+ if (cpu_present_set == NULL) {
+ perror("CPU_ALLOC");
+ exit(3);
+ }
+ cpu_present_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
+ CPU_ZERO_S(cpu_present_setsize, cpu_present_set);
+ for_all_proc_cpus(mark_cpu_present);
+
+ /*
+ * Allocate and initialize cpu_affinity_set
+ */
+ cpu_affinity_set = CPU_ALLOC((topo.max_cpu_num + 1));
+ if (cpu_affinity_set == NULL) {
+ perror("CPU_ALLOC");
+ exit(3);
+ }
+ cpu_affinity_setsize = CPU_ALLOC_SIZE((topo.max_cpu_num + 1));
+ CPU_ZERO_S(cpu_affinity_setsize, cpu_affinity_set);
+
+
+ /*
+ * For online cpus
+ * find max_core_id, max_package_id
+ */
+ for (i = 0; i <= topo.max_cpu_num; ++i) {
+ int siblings;
+
+ if (cpu_is_not_present(i)) {
+ if (verbose > 1)
+ fprintf(stderr, "cpu%d NOT PRESENT\n", i);
+ continue;
+ }
+ cpus[i].core_id = get_core_id(i);
+ if (cpus[i].core_id > max_core_id)
+ max_core_id = cpus[i].core_id;
+
+ cpus[i].physical_package_id = get_physical_package_id(i);
+ if (cpus[i].physical_package_id > max_package_id)
+ max_package_id = cpus[i].physical_package_id;
+
+ siblings = get_num_ht_siblings(i);
+ if (siblings > max_siblings)
+ max_siblings = siblings;
+ if (verbose > 1)
+ fprintf(stderr, "cpu %d pkg %d core %d\n",
+ i, cpus[i].physical_package_id, cpus[i].core_id);
+ }
+ topo.num_cores_per_pkg = max_core_id + 1;
+ if (verbose > 1)
+ fprintf(stderr, "max_core_id %d, sizing for %d cores per package\n",
+ max_core_id, topo.num_cores_per_pkg);
+ if (!summary_only && topo.num_cores_per_pkg > 1)
+ show_core = 1;
+
+ topo.num_packages = max_package_id + 1;
+ if (verbose > 1)
+ fprintf(stderr, "max_package_id %d, sizing for %d packages\n",
+ max_package_id, topo.num_packages);
+ if (!summary_only && topo.num_packages > 1)
+ show_pkg = 1;
+
+ topo.num_threads_per_core = max_siblings;
+ if (verbose > 1)
+ fprintf(stderr, "max_siblings %d\n", max_siblings);
+
+ free(cpus);
+}
+
+void
+allocate_counters(struct thread_data **t, struct core_data **c, struct pkg_data **p)
+{
+ int i;
+
+ *t = calloc(topo.num_threads_per_core * topo.num_cores_per_pkg *
+ topo.num_packages, sizeof(struct thread_data));
+ if (*t == NULL)
+ goto error;
+
+ for (i = 0; i < topo.num_threads_per_core *
+ topo.num_cores_per_pkg * topo.num_packages; i++)
+ (*t)[i].cpu_id = -1;
+
+ *c = calloc(topo.num_cores_per_pkg * topo.num_packages,
+ sizeof(struct core_data));
+ if (*c == NULL)
+ goto error;
+
+ for (i = 0; i < topo.num_cores_per_pkg * topo.num_packages; i++)
+ (*c)[i].core_id = -1;
+
+ *p = calloc(topo.num_packages, sizeof(struct pkg_data));
+ if (*p == NULL)
+ goto error;
+
+ for (i = 0; i < topo.num_packages; i++)
+ (*p)[i].package_id = i;
+
+ return;
+error:
+ perror("calloc counters");
+ exit(1);
+}
+/*
+ * init_counter()
+ *
+ * set cpu_id, core_num, pkg_num
+ * set FIRST_THREAD_IN_CORE and FIRST_CORE_IN_PACKAGE
+ *
+ * increment topo.num_cores when 1st core in pkg seen
+ */
+void init_counter(struct thread_data *thread_base, struct core_data *core_base,
+ struct pkg_data *pkg_base, int thread_num, int core_num,
+ int pkg_num, int cpu_id)
+{
+ struct thread_data *t;
+ struct core_data *c;
+ struct pkg_data *p;
+
+ t = GET_THREAD(thread_base, thread_num, core_num, pkg_num);
+ c = GET_CORE(core_base, core_num, pkg_num);
+ p = GET_PKG(pkg_base, pkg_num);
+
+ t->cpu_id = cpu_id;
+ if (thread_num == 0) {
+ t->flags |= CPU_IS_FIRST_THREAD_IN_CORE;
+ if (cpu_is_first_core_in_package(cpu_id))
+ t->flags |= CPU_IS_FIRST_CORE_IN_PACKAGE;
+ }
+
+ c->core_id = core_num;
+ p->package_id = pkg_num;
+}
+
+
+int initialize_counters(int cpu_id)
+{
+ int my_thread_id, my_core_id, my_package_id;
+
+ my_package_id = get_physical_package_id(cpu_id);
+ my_core_id = get_core_id(cpu_id);
+
+ if (cpu_is_first_sibling_in_core(cpu_id)) {
+ my_thread_id = 0;
+ topo.num_cores++;
+ } else {
+ my_thread_id = 1;
+ }
+
+ init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
+ init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
+ return 0;
+}
+
+void allocate_output_buffer()
+{
+ output_buffer = calloc(1, (1 + topo.num_cpus) * 128);
+ outp = output_buffer;
+ if (outp == NULL) {
+ perror("calloc");
+ exit(-1);
+ }
+}
+
+void setup_all_buffers(void)
+{
+ topology_probe();
+ allocate_counters(&thread_even, &core_even, &package_even);
+ allocate_counters(&thread_odd, &core_odd, &package_odd);
+ allocate_output_buffer();
+ for_all_proc_cpus(initialize_counters);
+}
void turbostat_init()
{
check_cpuid();
check_dev_msr();
check_super_user();
- num_cpus = for_all_cpus(alloc_new_counters);
- cpu_mask_init(num_cpus);
+ setup_all_buffers();
if (verbose)
- print_nehalem_info();
+ print_verbose_header();
}
int fork_it(char **argv)
{
- int retval;
pid_t child_pid;
- get_counters(cnt_even);
- /* clear affinity side-effect of get_counters() */
- sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
+ for_all_cpus(get_counters, EVEN_COUNTERS);
+ /* clear affinity side-effect of get_counters() */
+ sched_setaffinity(0, cpu_present_setsize, cpu_present_set);
gettimeofday(&tv_even, (struct timezone *)NULL);
child_pid = fork();
exit(1);
}
}
- get_counters(cnt_odd);
+ /*
+ * n.b. fork_it() does not check for errors from for_all_cpus()
+ * because re-starting is problematic when forking
+ */
+ for_all_cpus(get_counters, ODD_COUNTERS);
gettimeofday(&tv_odd, (struct timezone *)NULL);
- retval = compute_delta(cnt_odd, cnt_even, cnt_delta);
-
timersub(&tv_odd, &tv_even, &tv_delta);
- compute_average(cnt_delta, cnt_average);
- if (!retval)
- print_counters(cnt_delta);
+ for_all_cpus_2(delta_cpu, ODD_COUNTERS, EVEN_COUNTERS);
+ compute_average(EVEN_COUNTERS);
+ format_all_counters(EVEN_COUNTERS);
+ flush_stderr();
fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);
progname = argv[0];
- while ((opt = getopt(argc, argv, "+svi:M:")) != -1) {
+ while ((opt = getopt(argc, argv, "+cpsvi:M:")) != -1) {
switch (opt) {
+ case 'c':
+ show_core_only++;
+ break;
+ case 'p':
+ show_pkg_only++;
+ break;
case 's':
summary_only++;
break;
cmdline(argc, argv);
if (verbose > 1)
- fprintf(stderr, "turbostat Dec 6, 2010"
+ fprintf(stderr, "turbostat v2.0 May 16, 2012"
" - Len Brown <lenb@kernel.org>\n");
- if (verbose > 1)
- fprintf(stderr, "http://userweb.kernel.org/~lenb/acpi/utils/pmtools/turbostat/\n");
turbostat_init();
projects / users / willy / pagecache.git / commitdiff