1136 строки
26 KiB
C
1136 строки
26 KiB
C
/*
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* turbostat -- show CPU frequency and C-state residency
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* on modern Intel turbo-capable processors.
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*
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* Copyright (c) 2012 Intel Corporation.
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* Len Brown <len.brown@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <sys/resource.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/time.h>
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#include <stdlib.h>
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#include <dirent.h>
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#include <string.h>
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#include <ctype.h>
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#include <sched.h>
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#define MSR_TSC 0x10
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#define MSR_NEHALEM_PLATFORM_INFO 0xCE
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#define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1AD
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#define MSR_APERF 0xE8
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#define MSR_MPERF 0xE7
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#define MSR_PKG_C2_RESIDENCY 0x60D /* SNB only */
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#define MSR_PKG_C3_RESIDENCY 0x3F8
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#define MSR_PKG_C6_RESIDENCY 0x3F9
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#define MSR_PKG_C7_RESIDENCY 0x3FA /* SNB only */
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#define MSR_CORE_C3_RESIDENCY 0x3FC
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#define MSR_CORE_C6_RESIDENCY 0x3FD
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#define MSR_CORE_C7_RESIDENCY 0x3FE /* SNB only */
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char *proc_stat = "/proc/stat";
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unsigned int interval_sec = 5; /* set with -i interval_sec */
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unsigned int verbose; /* set with -v */
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unsigned int summary_only; /* set with -s */
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unsigned int skip_c0;
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unsigned int skip_c1;
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unsigned int do_nhm_cstates;
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unsigned int do_snb_cstates;
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unsigned int has_aperf;
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unsigned int units = 1000000000; /* Ghz etc */
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unsigned int genuine_intel;
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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 extra_msr_offset;
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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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unsigned int show_cpu;
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int aperf_mperf_unstable;
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int backwards_count;
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char *progname;
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int num_cpus;
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cpu_set_t *cpu_mask;
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size_t cpu_mask_size;
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struct counters {
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unsigned long long tsc; /* per thread */
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unsigned long long aperf; /* per thread */
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unsigned long long mperf; /* per thread */
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unsigned long long c1; /* per thread (calculated) */
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unsigned long long c3; /* per core */
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unsigned long long c6; /* per core */
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unsigned long long c7; /* per core */
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unsigned long long pc2; /* per package */
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unsigned long long pc3; /* per package */
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unsigned long long pc6; /* per package */
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unsigned long long pc7; /* per package */
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unsigned long long extra_msr; /* per thread */
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int pkg;
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int core;
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int cpu;
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struct counters *next;
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};
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struct counters *cnt_even;
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struct counters *cnt_odd;
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struct counters *cnt_delta;
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struct counters *cnt_average;
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struct timeval tv_even;
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struct timeval tv_odd;
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struct timeval tv_delta;
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/*
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* cpu_mask_init(ncpus)
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*
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* allocate and clear cpu_mask
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* set cpu_mask_size
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*/
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void cpu_mask_init(int ncpus)
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{
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cpu_mask = CPU_ALLOC(ncpus);
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if (cpu_mask == NULL) {
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perror("CPU_ALLOC");
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exit(3);
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}
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cpu_mask_size = CPU_ALLOC_SIZE(ncpus);
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CPU_ZERO_S(cpu_mask_size, cpu_mask);
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}
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void cpu_mask_uninit()
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{
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CPU_FREE(cpu_mask);
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cpu_mask = NULL;
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cpu_mask_size = 0;
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}
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int cpu_migrate(int cpu)
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{
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CPU_ZERO_S(cpu_mask_size, cpu_mask);
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CPU_SET_S(cpu, cpu_mask_size, cpu_mask);
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if (sched_setaffinity(0, cpu_mask_size, cpu_mask) == -1)
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return -1;
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else
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return 0;
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}
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int get_msr(int cpu, off_t offset, unsigned long long *msr)
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{
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ssize_t retval;
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char pathname[32];
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int fd;
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sprintf(pathname, "/dev/cpu/%d/msr", cpu);
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fd = open(pathname, O_RDONLY);
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if (fd < 0)
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return -1;
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retval = pread(fd, msr, sizeof *msr, offset);
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close(fd);
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if (retval != sizeof *msr)
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return -1;
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return 0;
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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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fprintf(stderr, "pk");
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if (show_pkg)
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fprintf(stderr, " ");
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if (show_core)
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fprintf(stderr, "cor");
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if (show_cpu)
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fprintf(stderr, " CPU");
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if (show_pkg || show_core || show_cpu)
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fprintf(stderr, " ");
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if (do_nhm_cstates)
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fprintf(stderr, " %%c0");
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if (has_aperf)
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fprintf(stderr, " GHz");
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fprintf(stderr, " TSC");
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if (do_nhm_cstates)
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fprintf(stderr, " %%c1");
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if (do_nhm_cstates)
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fprintf(stderr, " %%c3");
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if (do_nhm_cstates)
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fprintf(stderr, " %%c6");
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if (do_snb_cstates)
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fprintf(stderr, " %%c7");
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if (do_snb_cstates)
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fprintf(stderr, " %%pc2");
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if (do_nhm_cstates)
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fprintf(stderr, " %%pc3");
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if (do_nhm_cstates)
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fprintf(stderr, " %%pc6");
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if (do_snb_cstates)
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fprintf(stderr, " %%pc7");
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if (extra_msr_offset)
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fprintf(stderr, " MSR 0x%x ", extra_msr_offset);
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putc('\n', stderr);
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}
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void dump_cnt(struct counters *cnt)
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{
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if (!cnt)
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return;
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if (cnt->pkg) fprintf(stderr, "package: %d ", cnt->pkg);
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if (cnt->core) fprintf(stderr, "core:: %d ", cnt->core);
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if (cnt->cpu) fprintf(stderr, "CPU: %d ", cnt->cpu);
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if (cnt->tsc) fprintf(stderr, "TSC: %016llX\n", cnt->tsc);
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if (cnt->c3) fprintf(stderr, "c3: %016llX\n", cnt->c3);
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if (cnt->c6) fprintf(stderr, "c6: %016llX\n", cnt->c6);
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if (cnt->c7) fprintf(stderr, "c7: %016llX\n", cnt->c7);
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if (cnt->aperf) fprintf(stderr, "aperf: %016llX\n", cnt->aperf);
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if (cnt->pc2) fprintf(stderr, "pc2: %016llX\n", cnt->pc2);
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if (cnt->pc3) fprintf(stderr, "pc3: %016llX\n", cnt->pc3);
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if (cnt->pc6) fprintf(stderr, "pc6: %016llX\n", cnt->pc6);
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if (cnt->pc7) fprintf(stderr, "pc7: %016llX\n", cnt->pc7);
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if (cnt->extra_msr) fprintf(stderr, "msr0x%x: %016llX\n", extra_msr_offset, cnt->extra_msr);
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}
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void dump_list(struct counters *cnt)
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{
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printf("dump_list 0x%p\n", cnt);
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for (; cnt; cnt = cnt->next)
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dump_cnt(cnt);
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}
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/*
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* column formatting convention & formats
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* package: "pk" 2 columns %2d
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* core: "cor" 3 columns %3d
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* CPU: "CPU" 3 columns %3d
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* GHz: "GHz" 3 columns %3.2
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* TSC: "TSC" 3 columns %3.2
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* percentage " %pc3" %6.2
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*/
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void print_cnt(struct counters *p)
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{
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double interval_float;
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interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0;
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/* topology columns, print blanks on 1st (average) line */
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if (p == cnt_average) {
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if (show_pkg)
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fprintf(stderr, " ");
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if (show_pkg && show_core)
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fprintf(stderr, " ");
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if (show_core)
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fprintf(stderr, " ");
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if (show_cpu)
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fprintf(stderr, " " " ");
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} else {
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if (show_pkg)
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fprintf(stderr, "%2d", p->pkg);
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if (show_pkg && show_core)
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fprintf(stderr, " ");
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if (show_core)
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fprintf(stderr, "%3d", p->core);
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if (show_cpu)
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fprintf(stderr, " %3d", p->cpu);
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}
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/* %c0 */
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if (do_nhm_cstates) {
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if (show_pkg || show_core || show_cpu)
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fprintf(stderr, " ");
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if (!skip_c0)
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fprintf(stderr, "%6.2f", 100.0 * p->mperf/p->tsc);
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else
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fprintf(stderr, " ****");
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}
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/* GHz */
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if (has_aperf) {
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if (!aperf_mperf_unstable) {
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fprintf(stderr, " %3.2f",
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1.0 * p->tsc / units * p->aperf /
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p->mperf / interval_float);
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} else {
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if (p->aperf > p->tsc || p->mperf > p->tsc) {
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fprintf(stderr, " ***");
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} else {
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fprintf(stderr, "%3.1f*",
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1.0 * p->tsc /
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units * p->aperf /
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p->mperf / interval_float);
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}
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}
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}
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/* TSC */
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fprintf(stderr, "%5.2f", 1.0 * p->tsc/units/interval_float);
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if (do_nhm_cstates) {
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if (!skip_c1)
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fprintf(stderr, " %6.2f", 100.0 * p->c1/p->tsc);
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else
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fprintf(stderr, " ****");
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}
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if (do_nhm_cstates)
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fprintf(stderr, " %6.2f", 100.0 * p->c3/p->tsc);
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if (do_nhm_cstates)
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fprintf(stderr, " %6.2f", 100.0 * p->c6/p->tsc);
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if (do_snb_cstates)
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fprintf(stderr, " %6.2f", 100.0 * p->c7/p->tsc);
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if (do_snb_cstates)
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fprintf(stderr, " %6.2f", 100.0 * p->pc2/p->tsc);
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if (do_nhm_cstates)
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fprintf(stderr, " %6.2f", 100.0 * p->pc3/p->tsc);
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if (do_nhm_cstates)
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fprintf(stderr, " %6.2f", 100.0 * p->pc6/p->tsc);
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if (do_snb_cstates)
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fprintf(stderr, " %6.2f", 100.0 * p->pc7/p->tsc);
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if (extra_msr_offset)
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fprintf(stderr, " 0x%016llx", p->extra_msr);
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putc('\n', stderr);
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}
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void print_counters(struct counters *counters)
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{
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struct counters *cnt;
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static int printed;
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if (!printed || !summary_only)
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print_header();
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if (num_cpus > 1)
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print_cnt(cnt_average);
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printed = 1;
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if (summary_only)
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return;
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for (cnt = counters; cnt != NULL; cnt = cnt->next)
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print_cnt(cnt);
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}
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#define SUBTRACT_COUNTER(after, before, delta) (delta = (after - before), (before > after))
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int compute_delta(struct counters *after,
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struct counters *before, struct counters *delta)
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{
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int errors = 0;
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int perf_err = 0;
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skip_c0 = skip_c1 = 0;
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for ( ; after && before && delta;
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after = after->next, before = before->next, delta = delta->next) {
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if (before->cpu != after->cpu) {
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printf("cpu configuration changed: %d != %d\n",
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before->cpu, after->cpu);
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return -1;
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}
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if (SUBTRACT_COUNTER(after->tsc, before->tsc, delta->tsc)) {
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fprintf(stderr, "cpu%d TSC went backwards %llX to %llX\n",
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before->cpu, before->tsc, after->tsc);
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errors++;
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}
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/* check for TSC < 1 Mcycles over interval */
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if (delta->tsc < (1000 * 1000)) {
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fprintf(stderr, "Insanely slow TSC rate,"
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" TSC stops in idle?\n");
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fprintf(stderr, "You can disable all c-states"
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" by booting with \"idle=poll\"\n");
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fprintf(stderr, "or just the deep ones with"
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" \"processor.max_cstate=1\"\n");
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exit(-3);
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}
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if (SUBTRACT_COUNTER(after->c3, before->c3, delta->c3)) {
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fprintf(stderr, "cpu%d c3 counter went backwards %llX to %llX\n",
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before->cpu, before->c3, after->c3);
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errors++;
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}
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if (SUBTRACT_COUNTER(after->c6, before->c6, delta->c6)) {
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fprintf(stderr, "cpu%d c6 counter went backwards %llX to %llX\n",
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before->cpu, before->c6, after->c6);
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errors++;
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}
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if (SUBTRACT_COUNTER(after->c7, before->c7, delta->c7)) {
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fprintf(stderr, "cpu%d c7 counter went backwards %llX to %llX\n",
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before->cpu, before->c7, after->c7);
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errors++;
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}
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if (SUBTRACT_COUNTER(after->pc2, before->pc2, delta->pc2)) {
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fprintf(stderr, "cpu%d pc2 counter went backwards %llX to %llX\n",
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before->cpu, before->pc2, after->pc2);
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errors++;
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}
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if (SUBTRACT_COUNTER(after->pc3, before->pc3, delta->pc3)) {
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fprintf(stderr, "cpu%d pc3 counter went backwards %llX to %llX\n",
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before->cpu, before->pc3, after->pc3);
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errors++;
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}
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if (SUBTRACT_COUNTER(after->pc6, before->pc6, delta->pc6)) {
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fprintf(stderr, "cpu%d pc6 counter went backwards %llX to %llX\n",
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before->cpu, before->pc6, after->pc6);
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errors++;
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}
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if (SUBTRACT_COUNTER(after->pc7, before->pc7, delta->pc7)) {
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fprintf(stderr, "cpu%d pc7 counter went backwards %llX to %llX\n",
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before->cpu, before->pc7, after->pc7);
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errors++;
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}
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perf_err = SUBTRACT_COUNTER(after->aperf, before->aperf, delta->aperf);
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if (perf_err) {
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fprintf(stderr, "cpu%d aperf counter went backwards %llX to %llX\n",
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before->cpu, before->aperf, after->aperf);
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}
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perf_err |= SUBTRACT_COUNTER(after->mperf, before->mperf, delta->mperf);
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if (perf_err) {
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fprintf(stderr, "cpu%d mperf counter went backwards %llX to %llX\n",
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before->cpu, before->mperf, after->mperf);
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}
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if (perf_err) {
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if (!aperf_mperf_unstable) {
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fprintf(stderr, "%s: APERF or MPERF went backwards *\n", progname);
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fprintf(stderr, "* Frequency results do not cover entire interval *\n");
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fprintf(stderr, "* fix this by running Linux-2.6.30 or later *\n");
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aperf_mperf_unstable = 1;
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}
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/*
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* mperf delta is likely a huge "positive" number
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* can not use it for calculating c0 time
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*/
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skip_c0 = 1;
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skip_c1 = 1;
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}
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/*
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* As mperf and tsc collection are not atomic,
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* it is possible for mperf's non-halted cycles
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* to exceed TSC's all cycles: show c1 = 0% in that case.
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*/
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if (delta->mperf > delta->tsc)
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delta->c1 = 0;
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else /* normal case, derive c1 */
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delta->c1 = delta->tsc - delta->mperf
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- delta->c3 - delta->c6 - delta->c7;
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if (delta->mperf == 0)
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delta->mperf = 1; /* divide by 0 protection */
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/*
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* for "extra msr", just copy the latest w/o subtracting
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*/
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delta->extra_msr = after->extra_msr;
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if (errors) {
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fprintf(stderr, "ERROR cpu%d before:\n", before->cpu);
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dump_cnt(before);
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fprintf(stderr, "ERROR cpu%d after:\n", before->cpu);
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dump_cnt(after);
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errors = 0;
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}
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}
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return 0;
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}
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void compute_average(struct counters *delta, struct counters *avg)
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{
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struct counters *sum;
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sum = calloc(1, sizeof(struct counters));
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if (sum == NULL) {
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perror("calloc sum");
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exit(1);
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}
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for (; delta; delta = delta->next) {
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sum->tsc += delta->tsc;
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sum->c1 += delta->c1;
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sum->c3 += delta->c3;
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sum->c6 += delta->c6;
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sum->c7 += delta->c7;
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sum->aperf += delta->aperf;
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sum->mperf += delta->mperf;
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|
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);
|
|
}
|
|
|
|
int get_counters(struct counters *cnt)
|
|
{
|
|
for ( ; cnt; cnt = cnt->next) {
|
|
|
|
if (cpu_migrate(cnt->cpu))
|
|
return -1;
|
|
|
|
if (get_msr(cnt->cpu, MSR_TSC, &cnt->tsc))
|
|
return -1;
|
|
|
|
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;
|
|
}
|
|
|
|
if (do_snb_cstates)
|
|
if (get_msr(cnt->cpu, MSR_CORE_C7_RESIDENCY, &cnt->c7))
|
|
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;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void print_nehalem_info(void)
|
|
{
|
|
unsigned long long msr;
|
|
unsigned int ratio;
|
|
|
|
if (!do_nehalem_platform_info)
|
|
return;
|
|
|
|
get_msr(0, MSR_NEHALEM_PLATFORM_INFO, &msr);
|
|
|
|
ratio = (msr >> 40) & 0xFF;
|
|
fprintf(stderr, "%d * %.0f = %.0f MHz max efficiency\n",
|
|
ratio, bclk, ratio * bclk);
|
|
|
|
ratio = (msr >> 8) & 0xFF;
|
|
fprintf(stderr, "%d * %.0f = %.0f MHz TSC frequency\n",
|
|
ratio, bclk, ratio * bclk);
|
|
|
|
if (verbose > 1)
|
|
fprintf(stderr, "MSR_NEHALEM_PLATFORM_INFO: 0x%llx\n", msr);
|
|
|
|
if (!do_nehalem_turbo_ratio_limit)
|
|
return;
|
|
|
|
get_msr(0, MSR_NEHALEM_TURBO_RATIO_LIMIT, &msr);
|
|
|
|
ratio = (msr >> 24) & 0xFF;
|
|
if (ratio)
|
|
fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 4 active cores\n",
|
|
ratio, bclk, ratio * bclk);
|
|
|
|
ratio = (msr >> 16) & 0xFF;
|
|
if (ratio)
|
|
fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 3 active cores\n",
|
|
ratio, bclk, ratio * bclk);
|
|
|
|
ratio = (msr >> 8) & 0xFF;
|
|
if (ratio)
|
|
fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 2 active cores\n",
|
|
ratio, bclk, ratio * bclk);
|
|
|
|
ratio = (msr >> 0) & 0xFF;
|
|
if (ratio)
|
|
fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n",
|
|
ratio, bclk, ratio * bclk);
|
|
|
|
}
|
|
|
|
void free_counter_list(struct counters *list)
|
|
{
|
|
struct counters *p;
|
|
|
|
for (p = list; p; ) {
|
|
struct counters *free_me;
|
|
|
|
free_me = p;
|
|
p = p->next;
|
|
free(free_me);
|
|
}
|
|
}
|
|
|
|
void free_all_counters(void)
|
|
{
|
|
free_counter_list(cnt_even);
|
|
cnt_even = NULL;
|
|
|
|
free_counter_list(cnt_odd);
|
|
cnt_odd = NULL;
|
|
|
|
free_counter_list(cnt_delta);
|
|
cnt_delta = NULL;
|
|
|
|
free_counter_list(cnt_average);
|
|
cnt_average = NULL;
|
|
}
|
|
|
|
void insert_counters(struct counters **list,
|
|
struct counters *new)
|
|
{
|
|
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 */
|
|
}
|
|
|
|
while (prev->next && (prev->next->pkg == new->pkg)
|
|
&& (prev->next->core == new->core)
|
|
&& (prev->next->cpu < new->cpu)) {
|
|
prev = prev->next;
|
|
}
|
|
|
|
/*
|
|
* insert after "prev"
|
|
*/
|
|
new->next = prev->next;
|
|
prev->next = new;
|
|
}
|
|
|
|
void alloc_new_counters(int pkg, int core, 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);
|
|
|
|
new = (struct counters *)calloc(1, sizeof(struct counters));
|
|
if (new == NULL) {
|
|
perror("calloc");
|
|
exit(1);
|
|
}
|
|
new->pkg = pkg;
|
|
new->core = core;
|
|
new->cpu = cpu;
|
|
cnt_average = new;
|
|
}
|
|
|
|
int get_physical_package_id(int cpu)
|
|
{
|
|
char path[64];
|
|
FILE *filep;
|
|
int pkg;
|
|
|
|
sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/physical_package_id", cpu);
|
|
filep = fopen(path, "r");
|
|
if (filep == NULL) {
|
|
perror(path);
|
|
exit(1);
|
|
}
|
|
fscanf(filep, "%d", &pkg);
|
|
fclose(filep);
|
|
return pkg;
|
|
}
|
|
|
|
int get_core_id(int cpu)
|
|
{
|
|
char path[64];
|
|
FILE *filep;
|
|
int core;
|
|
|
|
sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/core_id", cpu);
|
|
filep = fopen(path, "r");
|
|
if (filep == NULL) {
|
|
perror(path);
|
|
exit(1);
|
|
}
|
|
fscanf(filep, "%d", &core);
|
|
fclose(filep);
|
|
return core;
|
|
}
|
|
|
|
/*
|
|
* run func(pkg, core, cpu) on every cpu in /proc/stat
|
|
*/
|
|
|
|
int for_all_cpus(void (func)(int, int, int))
|
|
{
|
|
FILE *fp;
|
|
int cpu_count;
|
|
int retval;
|
|
|
|
fp = fopen(proc_stat, "r");
|
|
if (fp == NULL) {
|
|
perror(proc_stat);
|
|
exit(1);
|
|
}
|
|
|
|
retval = fscanf(fp, "cpu %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d\n");
|
|
if (retval != 0) {
|
|
perror("/proc/stat format");
|
|
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);
|
|
if (retval != 1)
|
|
break;
|
|
|
|
func(get_physical_package_id(cpu), get_core_id(cpu), cpu);
|
|
}
|
|
fclose(fp);
|
|
return cpu_count;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
void dummy(int pkg, int core, int cpu) { return; }
|
|
/*
|
|
* check to see if a cpu came on-line
|
|
*/
|
|
int verify_num_cpus(void)
|
|
{
|
|
int new_num_cpus;
|
|
|
|
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;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void turbostat_loop()
|
|
{
|
|
restart:
|
|
get_counters(cnt_even);
|
|
gettimeofday(&tv_even, (struct timezone *)NULL);
|
|
|
|
while (1) {
|
|
if (verify_num_cpus()) {
|
|
re_initialize();
|
|
goto restart;
|
|
}
|
|
sleep(interval_sec);
|
|
if (get_counters(cnt_odd)) {
|
|
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);
|
|
sleep(interval_sec);
|
|
if (get_counters(cnt_even)) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
void check_dev_msr()
|
|
{
|
|
struct stat sb;
|
|
|
|
if (stat("/dev/cpu/0/msr", &sb)) {
|
|
fprintf(stderr, "no /dev/cpu/0/msr\n");
|
|
fprintf(stderr, "Try \"# modprobe msr\"\n");
|
|
exit(-5);
|
|
}
|
|
}
|
|
|
|
void check_super_user()
|
|
{
|
|
if (getuid() != 0) {
|
|
fprintf(stderr, "must be root\n");
|
|
exit(-6);
|
|
}
|
|
}
|
|
|
|
int has_nehalem_turbo_ratio_limit(unsigned int family, unsigned int model)
|
|
{
|
|
if (!genuine_intel)
|
|
return 0;
|
|
|
|
if (family != 6)
|
|
return 0;
|
|
|
|
switch (model) {
|
|
case 0x1A: /* Core i7, Xeon 5500 series - Bloomfield, Gainstown NHM-EP */
|
|
case 0x1E: /* Core i7 and i5 Processor - Clarksfield, Lynnfield, Jasper Forest */
|
|
case 0x1F: /* Core i7 and i5 Processor - Nehalem */
|
|
case 0x25: /* Westmere Client - Clarkdale, Arrandale */
|
|
case 0x2C: /* Westmere EP - Gulftown */
|
|
case 0x2A: /* SNB */
|
|
case 0x2D: /* SNB Xeon */
|
|
case 0x3A: /* IVB */
|
|
case 0x3D: /* IVB Xeon */
|
|
return 1;
|
|
case 0x2E: /* Nehalem-EX Xeon - Beckton */
|
|
case 0x2F: /* Westmere-EX Xeon - Eagleton */
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int is_snb(unsigned int family, unsigned int model)
|
|
{
|
|
if (!genuine_intel)
|
|
return 0;
|
|
|
|
switch (model) {
|
|
case 0x2A:
|
|
case 0x2D:
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
double discover_bclk(unsigned int family, unsigned int model)
|
|
{
|
|
if (is_snb(family, model))
|
|
return 100.00;
|
|
else
|
|
return 133.33;
|
|
}
|
|
|
|
void check_cpuid()
|
|
{
|
|
unsigned int eax, ebx, ecx, edx, max_level;
|
|
unsigned int fms, family, model, stepping;
|
|
|
|
eax = ebx = ecx = edx = 0;
|
|
|
|
asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0));
|
|
|
|
if (ebx == 0x756e6547 && edx == 0x49656e69 && ecx == 0x6c65746e)
|
|
genuine_intel = 1;
|
|
|
|
if (verbose)
|
|
fprintf(stderr, "%.4s%.4s%.4s ",
|
|
(char *)&ebx, (char *)&edx, (char *)&ecx);
|
|
|
|
asm("cpuid" : "=a" (fms), "=c" (ecx), "=d" (edx) : "a" (1) : "ebx");
|
|
family = (fms >> 8) & 0xf;
|
|
model = (fms >> 4) & 0xf;
|
|
stepping = fms & 0xf;
|
|
if (family == 6 || family == 0xf)
|
|
model += ((fms >> 16) & 0xf) << 4;
|
|
|
|
if (verbose)
|
|
fprintf(stderr, "%d CPUID levels; family:model:stepping 0x%x:%x:%x (%d:%d:%d)\n",
|
|
max_level, family, model, stepping, family, model, stepping);
|
|
|
|
if (!(edx & (1 << 5))) {
|
|
fprintf(stderr, "CPUID: no MSR\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* check max extended function levels of CPUID.
|
|
* This is needed to check for invariant TSC.
|
|
* This check is valid for both Intel and AMD.
|
|
*/
|
|
ebx = ecx = edx = 0;
|
|
asm("cpuid" : "=a" (max_level), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000000));
|
|
|
|
if (max_level < 0x80000007) {
|
|
fprintf(stderr, "CPUID: no invariant TSC (max_level 0x%x)\n", max_level);
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
|
|
* this check is valid for both Intel and AMD
|
|
*/
|
|
asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007));
|
|
has_invariant_tsc = edx & (1 << 8);
|
|
|
|
if (!has_invariant_tsc) {
|
|
fprintf(stderr, "No invariant TSC\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* APERF/MPERF is advertised by CPUID.EAX=0x6: ECX.bit0
|
|
* this check is valid for both Intel and AMD
|
|
*/
|
|
|
|
asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6));
|
|
has_aperf = ecx & (1 << 0);
|
|
if (!has_aperf) {
|
|
fprintf(stderr, "No APERF MSR\n");
|
|
exit(1);
|
|
}
|
|
|
|
do_nehalem_platform_info = genuine_intel && has_invariant_tsc;
|
|
do_nhm_cstates = genuine_intel; /* all Intel w/ non-stop TSC have NHM counters */
|
|
do_snb_cstates = is_snb(family, model);
|
|
bclk = discover_bclk(family, model);
|
|
|
|
do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model);
|
|
}
|
|
|
|
|
|
void usage()
|
|
{
|
|
fprintf(stderr, "%s: [-v] [-M MSR#] [-i interval_sec | command ...]\n",
|
|
progname);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
/*
|
|
* in /dev/cpu/ return success for names that are numbers
|
|
* ie. filter out ".", "..", "microcode".
|
|
*/
|
|
int dir_filter(const struct dirent *dirp)
|
|
{
|
|
if (isdigit(dirp->d_name[0]))
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
int open_dev_cpu_msr(int dummy1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void turbostat_init()
|
|
{
|
|
check_cpuid();
|
|
|
|
check_dev_msr();
|
|
check_super_user();
|
|
|
|
num_cpus = for_all_cpus(alloc_new_counters);
|
|
cpu_mask_init(num_cpus);
|
|
|
|
if (verbose)
|
|
print_nehalem_info();
|
|
}
|
|
|
|
int fork_it(char **argv)
|
|
{
|
|
int retval;
|
|
pid_t child_pid;
|
|
get_counters(cnt_even);
|
|
gettimeofday(&tv_even, (struct timezone *)NULL);
|
|
|
|
child_pid = fork();
|
|
if (!child_pid) {
|
|
/* child */
|
|
execvp(argv[0], argv);
|
|
} else {
|
|
int status;
|
|
|
|
/* parent */
|
|
if (child_pid == -1) {
|
|
perror("fork");
|
|
exit(1);
|
|
}
|
|
|
|
signal(SIGINT, SIG_IGN);
|
|
signal(SIGQUIT, SIG_IGN);
|
|
if (waitpid(child_pid, &status, 0) == -1) {
|
|
perror("wait");
|
|
exit(1);
|
|
}
|
|
}
|
|
get_counters(cnt_odd);
|
|
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);
|
|
|
|
fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void cmdline(int argc, char **argv)
|
|
{
|
|
int opt;
|
|
|
|
progname = argv[0];
|
|
|
|
while ((opt = getopt(argc, argv, "+svi:M:")) != -1) {
|
|
switch (opt) {
|
|
case 's':
|
|
summary_only++;
|
|
break;
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
case 'i':
|
|
interval_sec = atoi(optarg);
|
|
break;
|
|
case 'M':
|
|
sscanf(optarg, "%x", &extra_msr_offset);
|
|
if (verbose > 1)
|
|
fprintf(stderr, "MSR 0x%X\n", extra_msr_offset);
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
cmdline(argc, argv);
|
|
|
|
if (verbose > 1)
|
|
fprintf(stderr, "turbostat Dec 6, 2010"
|
|
" - Len Brown <lenb@kernel.org>\n");
|
|
if (verbose > 1)
|
|
fprintf(stderr, "http://userweb.kernel.org/~lenb/acpi/utils/pmtools/turbostat/\n");
|
|
|
|
turbostat_init();
|
|
|
|
/*
|
|
* if any params left, it must be a command to fork
|
|
*/
|
|
if (argc - optind)
|
|
return fork_it(argv + optind);
|
|
else
|
|
turbostat_loop();
|
|
|
|
return 0;
|
|
}
|