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/**
* collectd - src/cpu.c
* Copyright (C) 2005-2014 Florian octo Forster
* Copyright (C) 2008 Oleg King
* Copyright (C) 2009 Simon Kuhnle
* Copyright (C) 2009 Manuel Sanmartin
* Copyright (C) 2013-2014 Pierre-Yves Ritschard
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; only version 2 of the License is applicable.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
* Florian octo Forster <octo at collectd.org>
* Oleg King <king2 at kaluga.ru>
* Simon Kuhnle <simon at blarzwurst.de>
* Manuel Sanmartin
* Pierre-Yves Ritschard <pyr at spootnik.org>
**/
#include "collectd.h"
#include "common.h"
#include "plugin.h"
#ifdef HAVE_MACH_KERN_RETURN_H
#include <mach/kern_return.h>
#endif
#ifdef HAVE_MACH_MACH_INIT_H
#include <mach/mach_init.h>
#endif
#ifdef HAVE_MACH_HOST_PRIV_H
#include <mach/host_priv.h>
#endif
#if HAVE_MACH_MACH_ERROR_H
#include <mach/mach_error.h>
#endif
#ifdef HAVE_MACH_PROCESSOR_INFO_H
#include <mach/processor_info.h>
#endif
#ifdef HAVE_MACH_PROCESSOR_H
#include <mach/processor.h>
#endif
#ifdef HAVE_MACH_VM_MAP_H
#include <mach/vm_map.h>
#endif
#ifdef HAVE_LIBKSTAT
#include <sys/sysinfo.h>
#endif /* HAVE_LIBKSTAT */
#if (defined(HAVE_SYSCTL) && HAVE_SYSCTL) || \
(defined(HAVE_SYSCTLBYNAME) && HAVE_SYSCTLBYNAME)
#ifdef HAVE_SYS_SYSCTL_H
#include <sys/sysctl.h>
#endif
#ifdef HAVE_SYS_DKSTAT_H
#include <sys/dkstat.h>
#endif
#if !defined(CP_USER) || !defined(CP_NICE) || !defined(CP_SYS) || \
!defined(CP_INTR) || !defined(CP_IDLE) || !defined(CPUSTATES)
#define CP_USER 0
#define CP_NICE 1
#define CP_SYS 2
#define CP_INTR 3
#define CP_IDLE 4
#define CPUSTATES 5
#endif
#endif /* HAVE_SYSCTL || HAVE_SYSCTLBYNAME */
#if HAVE_SYSCTL
#if defined(CTL_HW) && defined(HW_NCPU) && defined(CTL_KERN) && \
defined(KERN_CPTIME) && defined(CPUSTATES)
#define CAN_USE_SYSCTL 1
#else
#define CAN_USE_SYSCTL 0
#endif
#else
#define CAN_USE_SYSCTL 0
#endif
#define COLLECTD_CPU_STATE_USER 0
#define COLLECTD_CPU_STATE_SYSTEM 1
#define COLLECTD_CPU_STATE_WAIT 2
#define COLLECTD_CPU_STATE_NICE 3
#define COLLECTD_CPU_STATE_SWAP 4
#define COLLECTD_CPU_STATE_INTERRUPT 5
#define COLLECTD_CPU_STATE_SOFTIRQ 6
#define COLLECTD_CPU_STATE_STEAL 7
#define COLLECTD_CPU_STATE_GUEST 8
#define COLLECTD_CPU_STATE_GUEST_NICE 9
#define COLLECTD_CPU_STATE_IDLE 10
#define COLLECTD_CPU_STATE_ACTIVE 11 /* sum of (!idle) */
#define COLLECTD_CPU_STATE_MAX 12 /* #states */
#if HAVE_STATGRAB_H
#include <statgrab.h>
#endif
#ifdef HAVE_PERFSTAT
#include <libperfstat.h>
#include <sys/protosw.h>
#endif /* HAVE_PERFSTAT */
#if !PROCESSOR_CPU_LOAD_INFO && !KERNEL_LINUX && !HAVE_LIBKSTAT && \
!CAN_USE_SYSCTL && !HAVE_SYSCTLBYNAME && !HAVE_LIBSTATGRAB && \
!HAVE_PERFSTAT
#error "No applicable input method."
#endif
static const char *cpu_state_names[] = {
"user", "system", "wait", "nice", "swap", "interrupt",
"softirq", "steal", "guest", "guest_nice", "idle", "active"};
#ifdef PROCESSOR_CPU_LOAD_INFO
static mach_port_t port_host;
static processor_port_array_t cpu_list;
static mach_msg_type_number_t cpu_list_len;
/* #endif PROCESSOR_CPU_LOAD_INFO */
#elif defined(KERNEL_LINUX)
/* no variables needed */
/* #endif KERNEL_LINUX */
#elif defined(HAVE_LIBKSTAT)
#if HAVE_KSTAT_H
#include <kstat.h>
#endif
/* colleague tells me that Sun doesn't sell systems with more than 100 or so
* CPUs.. */
#define MAX_NUMCPU 256
extern kstat_ctl_t *kc;
static kstat_t *ksp[MAX_NUMCPU];
static int numcpu;
/* #endif HAVE_LIBKSTAT */
#elif CAN_USE_SYSCTL
static int numcpu;
/* #endif CAN_USE_SYSCTL */
#elif defined(HAVE_SYSCTLBYNAME)
static int numcpu;
#ifdef HAVE_SYSCTL_KERN_CP_TIMES
static int maxcpu;
#endif /* HAVE_SYSCTL_KERN_CP_TIMES */
/* #endif HAVE_SYSCTLBYNAME */
#elif defined(HAVE_LIBSTATGRAB)
/* no variables needed */
/* #endif HAVE_LIBSTATGRAB */
#elif defined(HAVE_PERFSTAT)
#define TOTAL_IDLE 0
#define TOTAL_USER 1
#define TOTAL_SYS 2
#define TOTAL_WAIT 3
#define TOTAL_STAT_NUM 4
static value_to_rate_state_t total_conv[TOTAL_STAT_NUM];
static perfstat_cpu_t *perfcpu;
static int numcpu;
static int pnumcpu;
#endif /* HAVE_PERFSTAT */
#define RATE_ADD(sum, val) \
do { \
if (isnan(sum)) \
(sum) = (val); \
else if (!isnan(val)) \
(sum) += (val); \
} while (0)
struct cpu_state_s {
value_to_rate_state_t conv;
gauge_t rate;
bool has_value;
};
typedef struct cpu_state_s cpu_state_t;
static cpu_state_t *cpu_states;
static size_t cpu_states_num; /* #cpu_states allocated */
/* Highest CPU number in the current iteration. Used by the dispatch logic to
* determine how many CPUs there were. Reset to 0 by cpu_reset(). */
static size_t global_cpu_num;
static bool report_by_cpu = true;
static bool report_by_state = true;
static bool report_percent;
static bool report_num_cpu;
static bool report_guest;
static bool subtract_guest = true;
static const char *config_keys[] = {"ReportByCpu", "ReportByState",
"ReportNumCpu", "ValuesPercentage",
"ReportGuestState", "SubtractGuestState"};
static int config_keys_num = STATIC_ARRAY_SIZE(config_keys);
static int cpu_config(char const *key, char const *value) /* {{{ */
{
if (strcasecmp(key, "ReportByCpu") == 0)
report_by_cpu = IS_TRUE(value);
else if (strcasecmp(key, "ValuesPercentage") == 0)
report_percent = IS_TRUE(value);
else if (strcasecmp(key, "ReportByState") == 0)
report_by_state = IS_TRUE(value);
else if (strcasecmp(key, "ReportNumCpu") == 0)
report_num_cpu = IS_TRUE(value);
else if (strcasecmp(key, "ReportGuestState") == 0)
report_guest = IS_TRUE(value);
else if (strcasecmp(key, "SubtractGuestState") == 0)
subtract_guest = IS_TRUE(value);
else
return -1;
return 0;
} /* }}} int cpu_config */
static int init(void) {
#if PROCESSOR_CPU_LOAD_INFO
kern_return_t status;
port_host = mach_host_self();
status = host_processors(port_host, &cpu_list, &cpu_list_len);
if (status == KERN_INVALID_ARGUMENT) {
ERROR("cpu plugin: Don't have a privileged host control port. "
"The most common cause for this problem is "
"that collectd is running without root "
"privileges, which are required to read CPU "
"load information. "
"<https://collectd.org/bugs/22>");
cpu_list_len = 0;
return -1;
}
if (status != KERN_SUCCESS) {
ERROR("cpu plugin: host_processors() failed with status %d.", (int)status);
cpu_list_len = 0;
return -1;
}
INFO("cpu plugin: Found %i processor%s.", (int)cpu_list_len,
cpu_list_len == 1 ? "" : "s");
/* #endif PROCESSOR_CPU_LOAD_INFO */
#elif defined(HAVE_LIBKSTAT)
kstat_t *ksp_chain;
numcpu = 0;
if (kc == NULL)
return -1;
/* Solaris doesn't count linear.. *sigh* */
for (numcpu = 0, ksp_chain = kc->kc_chain;
(numcpu < MAX_NUMCPU) && (ksp_chain != NULL);
ksp_chain = ksp_chain->ks_next)
if (strncmp(ksp_chain->ks_module, "cpu_stat", 8) == 0)
ksp[numcpu++] = ksp_chain;
/* #endif HAVE_LIBKSTAT */
#elif CAN_USE_SYSCTL
size_t numcpu_size;
int mib[2] = {CTL_HW, HW_NCPU};
int status;
numcpu = 0;
numcpu_size = sizeof(numcpu);
status = sysctl(mib, STATIC_ARRAY_SIZE(mib), &numcpu, &numcpu_size, NULL, 0);
if (status == -1) {
WARNING("cpu plugin: sysctl: %s", STRERRNO);
return -1;
}
/* #endif CAN_USE_SYSCTL */
#elif defined(HAVE_SYSCTLBYNAME)
size_t numcpu_size;
numcpu_size = sizeof(numcpu);
if (sysctlbyname("hw.ncpu", &numcpu, &numcpu_size, NULL, 0) < 0) {
WARNING("cpu plugin: sysctlbyname(hw.ncpu): %s", STRERRNO);
return -1;
}
#ifdef HAVE_SYSCTL_KERN_CP_TIMES
numcpu_size = sizeof(maxcpu);
if (sysctlbyname("kern.smp.maxcpus", &maxcpu, &numcpu_size, NULL, 0) < 0) {
WARNING("cpu plugin: sysctlbyname(kern.smp.maxcpus): %s", STRERRNO);
return -1;
}
#else
if (numcpu != 1)
NOTICE("cpu: Only one processor supported when using `sysctlbyname' (found "
"%i)",
numcpu);
#endif
/* #endif HAVE_SYSCTLBYNAME */
#elif defined(HAVE_LIBSTATGRAB)
/* nothing to initialize */
/* #endif HAVE_LIBSTATGRAB */
#elif defined(HAVE_PERFSTAT)
/* nothing to initialize */
#endif /* HAVE_PERFSTAT */
return 0;
} /* int init */
static void submit_value(int cpu_num, int cpu_state, const char *type,
value_t value) {
value_list_t vl = VALUE_LIST_INIT;
vl.values = &value;
vl.values_len = 1;
sstrncpy(vl.plugin, "cpu", sizeof(vl.plugin));
sstrncpy(vl.type, type, sizeof(vl.type));
sstrncpy(vl.type_instance, cpu_state_names[cpu_state],
sizeof(vl.type_instance));
if (cpu_num >= 0) {
snprintf(vl.plugin_instance, sizeof(vl.plugin_instance), "%i", cpu_num);
}
plugin_dispatch_values(&vl);
}
static void submit_percent(int cpu_num, int cpu_state, gauge_t value) {
/* This function is called for all known CPU states, but each read
* method will only report a subset. The remaining states are left as
* NAN and we ignore them here. */
if (isnan(value))
return;
submit_value(cpu_num, cpu_state, "percent", (value_t){.gauge = value});
}
static void submit_derive(int cpu_num, int cpu_state, derive_t value) {
submit_value(cpu_num, cpu_state, "cpu", (value_t){.derive = value});
}
/* Takes the zero-index number of a CPU and makes sure that the module-global
* cpu_states buffer is large enough. Returne ENOMEM on erorr. */
static int cpu_states_alloc(size_t cpu_num) /* {{{ */
{
cpu_state_t *tmp;
size_t sz;
sz = (((size_t)cpu_num) + 1) * COLLECTD_CPU_STATE_MAX;
assert(sz > 0);
/* We already have enough space. */
if (cpu_states_num >= sz)
return 0;
tmp = realloc(cpu_states, sz * sizeof(*cpu_states));
if (tmp == NULL) {
ERROR("cpu plugin: realloc failed.");
return ENOMEM;
}
cpu_states = tmp;
tmp = cpu_states + cpu_states_num;
memset(tmp, 0, (sz - cpu_states_num) * sizeof(*cpu_states));
cpu_states_num = sz;
return 0;
} /* }}} cpu_states_alloc */
static cpu_state_t *get_cpu_state(size_t cpu_num, size_t state) /* {{{ */
{
size_t index = ((cpu_num * COLLECTD_CPU_STATE_MAX) + state);
if (index >= cpu_states_num)
return NULL;
return &cpu_states[index];
} /* }}} cpu_state_t *get_cpu_state */
#if defined(HAVE_PERFSTAT) /* {{{ */
/* populate global aggregate cpu rate */
static int total_rate(gauge_t *sum_by_state, size_t state, derive_t d,
value_to_rate_state_t *conv, cdtime_t now) {
gauge_t rate = NAN;
int status =
value_to_rate(&rate, (value_t){.derive = d}, DS_TYPE_DERIVE, now, conv);
if (status != 0)
return status;
sum_by_state[state] = rate;
if (state != COLLECTD_CPU_STATE_IDLE)
RATE_ADD(sum_by_state[COLLECTD_CPU_STATE_ACTIVE], sum_by_state[state]);
return 0;
}
#endif /* }}} HAVE_PERFSTAT */
/* Populates the per-CPU COLLECTD_CPU_STATE_ACTIVE rate and the global
* rate_by_state
* array. */
static void aggregate(gauge_t *sum_by_state) /* {{{ */
{
for (size_t state = 0; state < COLLECTD_CPU_STATE_MAX; state++)
sum_by_state[state] = NAN;
for (size_t cpu_num = 0; cpu_num < global_cpu_num; cpu_num++) {
cpu_state_t *this_cpu_states = get_cpu_state(cpu_num, 0);
this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate = NAN;
for (size_t state = 0; state < COLLECTD_CPU_STATE_ACTIVE; state++) {
if (!this_cpu_states[state].has_value)
continue;
RATE_ADD(sum_by_state[state], this_cpu_states[state].rate);
if (state != COLLECTD_CPU_STATE_IDLE)
RATE_ADD(this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate,
this_cpu_states[state].rate);
}
if (!isnan(this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate))
this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].has_value = true;
RATE_ADD(sum_by_state[COLLECTD_CPU_STATE_ACTIVE],
this_cpu_states[COLLECTD_CPU_STATE_ACTIVE].rate);
}
#if defined(HAVE_PERFSTAT) /* {{{ */
cdtime_t now = cdtime();
perfstat_cpu_total_t cputotal = {0};
if (!perfstat_cpu_total(NULL, &cputotal, sizeof(cputotal), 1)) {
WARNING("cpu plugin: perfstat_cpu_total: %s", STRERRNO);
return;
}
/* Reset COLLECTD_CPU_STATE_ACTIVE */
sum_by_state[COLLECTD_CPU_STATE_ACTIVE] = NAN;
/* Physical Processor Utilization */
total_rate(sum_by_state, COLLECTD_CPU_STATE_IDLE, (derive_t)cputotal.pidle,
&total_conv[TOTAL_IDLE], now);
total_rate(sum_by_state, COLLECTD_CPU_STATE_USER, (derive_t)cputotal.puser,
&total_conv[TOTAL_USER], now);
total_rate(sum_by_state, COLLECTD_CPU_STATE_SYSTEM, (derive_t)cputotal.psys,
&total_conv[TOTAL_SYS], now);
total_rate(sum_by_state, COLLECTD_CPU_STATE_WAIT, (derive_t)cputotal.pwait,
&total_conv[TOTAL_WAIT], now);
#endif /* }}} HAVE_PERFSTAT */
} /* }}} void aggregate */
/* Commits (dispatches) the values for one CPU or the global aggregation.
* cpu_num is the index of the CPU to be committed or -1 in case of the global
* aggregation. rates is a pointer to COLLECTD_CPU_STATE_MAX gauge_t values
* holding the
* current rate; each rate may be NAN. Calculates the percentage of each state
* and dispatches the metric. */
static void cpu_commit_one(int cpu_num, /* {{{ */
gauge_t rates[static COLLECTD_CPU_STATE_MAX]) {
gauge_t sum;
sum = rates[COLLECTD_CPU_STATE_ACTIVE];
RATE_ADD(sum, rates[COLLECTD_CPU_STATE_IDLE]);
if (!report_by_state) {
gauge_t percent = 100.0 * rates[COLLECTD_CPU_STATE_ACTIVE] / sum;
submit_percent(cpu_num, COLLECTD_CPU_STATE_ACTIVE, percent);
return;
}
for (size_t state = 0; state < COLLECTD_CPU_STATE_ACTIVE; state++) {
gauge_t percent = 100.0 * rates[state] / sum;
submit_percent(cpu_num, state, percent);
}
} /* }}} void cpu_commit_one */
/* Commits the number of cores */
static void cpu_commit_num_cpu(gauge_t value) /* {{{ */
{
value_list_t vl = VALUE_LIST_INIT;
vl.values = &(value_t){.gauge = value};
vl.values_len = 1;
sstrncpy(vl.plugin, "cpu", sizeof(vl.plugin));
sstrncpy(vl.type, "count", sizeof(vl.type));
plugin_dispatch_values(&vl);
} /* }}} void cpu_commit_num_cpu */
/* Resets the internal aggregation. This is called by the read callback after
* each iteration / after each call to cpu_commit(). */
static void cpu_reset(void) /* {{{ */
{
for (size_t i = 0; i < cpu_states_num; i++)
cpu_states[i].has_value = false;
global_cpu_num = 0;
} /* }}} void cpu_reset */
/* Legacy behavior: Dispatches the raw derive values without any aggregation. */
static void cpu_commit_without_aggregation(void) /* {{{ */
{
for (int state = 0; state < COLLECTD_CPU_STATE_ACTIVE; state++) {
for (size_t cpu_num = 0; cpu_num < global_cpu_num; cpu_num++) {
cpu_state_t *s = get_cpu_state(cpu_num, state);
if (!s->has_value)
continue;
submit_derive((int)cpu_num, (int)state, s->conv.last_value.derive);
}
}
} /* }}} void cpu_commit_without_aggregation */
/* Aggregates the internal state and dispatches the metrics. */
static void cpu_commit(void) /* {{{ */
{
gauge_t global_rates[COLLECTD_CPU_STATE_MAX] = {
NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN /* Batman! */
};
if (report_num_cpu)
cpu_commit_num_cpu((gauge_t)global_cpu_num);
if (report_by_state && report_by_cpu && !report_percent) {
cpu_commit_without_aggregation();
return;
}
aggregate(global_rates);
if (!report_by_cpu) {
cpu_commit_one(-1, global_rates);
return;
}
for (size_t cpu_num = 0; cpu_num < global_cpu_num; cpu_num++) {
cpu_state_t *this_cpu_states = get_cpu_state(cpu_num, 0);
gauge_t local_rates[COLLECTD_CPU_STATE_MAX] = {
NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN};
for (size_t state = 0; state < COLLECTD_CPU_STATE_MAX; state++)
if (this_cpu_states[state].has_value)
local_rates[state] = this_cpu_states[state].rate;
cpu_commit_one((int)cpu_num, local_rates);
}
} /* }}} void cpu_commit */
/* Adds a derive value to the internal state. This should be used by each read
* function for each state. At the end of the iteration, the read function
* should call cpu_commit(). */
static int cpu_stage(size_t cpu_num, size_t state, derive_t d,
cdtime_t now) /* {{{ */
{
int status;
cpu_state_t *s;
gauge_t rate = NAN;
value_t val = {.derive = d};
if (state >= COLLECTD_CPU_STATE_ACTIVE)
return EINVAL;
status = cpu_states_alloc(cpu_num);
if (status != 0)
return status;
if (global_cpu_num <= cpu_num)
global_cpu_num = cpu_num + 1;
s = get_cpu_state(cpu_num, state);
status = value_to_rate(&rate, val, DS_TYPE_DERIVE, now, &s->conv);
if (status != 0)
return status;
s->rate = rate;
s->has_value = true;
return 0;
} /* }}} int cpu_stage */
static int cpu_read(void) {
cdtime_t now = cdtime();
#if PROCESSOR_CPU_LOAD_INFO /* {{{ */
kern_return_t status;
processor_cpu_load_info_data_t cpu_info;
mach_msg_type_number_t cpu_info_len;
host_t cpu_host;
for (mach_msg_type_number_t cpu = 0; cpu < cpu_list_len; cpu++) {
cpu_host = 0;
cpu_info_len = PROCESSOR_BASIC_INFO_COUNT;
status = processor_info(cpu_list[cpu], PROCESSOR_CPU_LOAD_INFO, &cpu_host,
(processor_info_t)&cpu_info, &cpu_info_len);
if (status != KERN_SUCCESS) {
ERROR("cpu plugin: processor_info (PROCESSOR_CPU_LOAD_INFO) failed: %s",
mach_error_string(status));
continue;
}
if (cpu_info_len < CPU_STATE_MAX) {
ERROR("cpu plugin: processor_info returned only %i elements..",
cpu_info_len);
continue;
}
cpu_stage(cpu, COLLECTD_CPU_STATE_USER,
(derive_t)cpu_info.cpu_ticks[CPU_STATE_USER], now);
cpu_stage(cpu, COLLECTD_CPU_STATE_NICE,
(derive_t)cpu_info.cpu_ticks[CPU_STATE_NICE], now);
cpu_stage(cpu, COLLECTD_CPU_STATE_SYSTEM,
(derive_t)cpu_info.cpu_ticks[CPU_STATE_SYSTEM], now);
cpu_stage(cpu, COLLECTD_CPU_STATE_IDLE,
(derive_t)cpu_info.cpu_ticks[CPU_STATE_IDLE], now);
}
/* }}} #endif PROCESSOR_CPU_LOAD_INFO */
#elif defined(KERNEL_LINUX) /* {{{ */
int cpu;
FILE *fh;
char buf[1024];
char *fields[11];
int numfields;
if ((fh = fopen("/proc/stat", "r")) == NULL) {
ERROR("cpu plugin: fopen (/proc/stat) failed: %s", STRERRNO);
return -1;
}
while (fgets(buf, 1024, fh) != NULL) {
if (strncmp(buf, "cpu", 3))
continue;
if ((buf[3] < '0') || (buf[3] > '9'))
continue;
numfields = strsplit(buf, fields, STATIC_ARRAY_SIZE(fields));
if (numfields < 5)
continue;
cpu = atoi(fields[0] + 3);
/* Do not stage User and Nice immediately: we may need to alter them later:
*/
long long user_value = atoll(fields[1]);
long long nice_value = atoll(fields[2]);
cpu_stage(cpu, COLLECTD_CPU_STATE_SYSTEM, (derive_t)atoll(fields[3]), now);
cpu_stage(cpu, COLLECTD_CPU_STATE_IDLE, (derive_t)atoll(fields[4]), now);
if (numfields >= 8) {
cpu_stage(cpu, COLLECTD_CPU_STATE_WAIT, (derive_t)atoll(fields[5]), now);
cpu_stage(cpu, COLLECTD_CPU_STATE_INTERRUPT, (derive_t)atoll(fields[6]),
now);
cpu_stage(cpu, COLLECTD_CPU_STATE_SOFTIRQ, (derive_t)atoll(fields[7]),
now);
}
if (numfields >= 9) { /* Steal (since Linux 2.6.11) */
cpu_stage(cpu, COLLECTD_CPU_STATE_STEAL, (derive_t)atoll(fields[8]), now);
}
if (numfields >= 10) { /* Guest (since Linux 2.6.24) */
if (report_guest) {
long long value = atoll(fields[9]);
cpu_stage(cpu, COLLECTD_CPU_STATE_GUEST, (derive_t)value, now);
/* Guest is included in User; optionally subtract Guest from User: */
if (subtract_guest) {
user_value -= value;
if (user_value < 0)
user_value = 0;
}
}
}
if (numfields >= 11) { /* Guest_nice (since Linux 2.6.33) */
if (report_guest) {
long long value = atoll(fields[10]);
cpu_stage(cpu, COLLECTD_CPU_STATE_GUEST_NICE, (derive_t)value, now);
/* Guest_nice is included in Nice; optionally subtract Guest_nice from
Nice: */
if (subtract_guest) {
nice_value -= value;
if (nice_value < 0)
nice_value = 0;
}
}
}
/* Eventually stage User and Nice: */
cpu_stage(cpu, COLLECTD_CPU_STATE_USER, (derive_t)user_value, now);
cpu_stage(cpu, COLLECTD_CPU_STATE_NICE, (derive_t)nice_value, now);
}
fclose(fh);
/* }}} #endif defined(KERNEL_LINUX) */
#elif defined(HAVE_LIBKSTAT) /* {{{ */
static cpu_stat_t cs;
if (kc == NULL)
return -1;
for (int cpu = 0; cpu < numcpu; cpu++) {
if (kstat_read(kc, ksp[cpu], &cs) == -1)
continue; /* error message? */
cpu_stage(ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_IDLE,
(derive_t)cs.cpu_sysinfo.cpu[CPU_IDLE], now);
cpu_stage(ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_USER,
(derive_t)cs.cpu_sysinfo.cpu[CPU_USER], now);
cpu_stage(ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_SYSTEM,
(derive_t)cs.cpu_sysinfo.cpu[CPU_KERNEL], now);
cpu_stage(ksp[cpu]->ks_instance, COLLECTD_CPU_STATE_WAIT,
(derive_t)cs.cpu_sysinfo.cpu[CPU_WAIT], now);
}
/* }}} #endif defined(HAVE_LIBKSTAT) */
#elif CAN_USE_SYSCTL /* {{{ */
uint64_t cpuinfo[numcpu][CPUSTATES];
size_t cpuinfo_size;
int status;
if (numcpu < 1) {
ERROR("cpu plugin: Could not determine number of "
"installed CPUs using sysctl(3).");
return -1;
}
memset(cpuinfo, 0, sizeof(cpuinfo));
#if defined(KERN_CPTIME2)
if (numcpu > 1) {
for (int i = 0; i < numcpu; i++) {
int mib[] = {CTL_KERN, KERN_CPTIME2, i};
cpuinfo_size = sizeof(cpuinfo[0]);
status = sysctl(mib, STATIC_ARRAY_SIZE(mib), cpuinfo[i], &cpuinfo_size,
NULL, 0);
if (status == -1) {
ERROR("cpu plugin: sysctl failed: %s.", STRERRNO);
return -1;
}
}
} else
#endif /* defined(KERN_CPTIME2) */
{
int mib[] = {CTL_KERN, KERN_CPTIME};
long cpuinfo_tmp[CPUSTATES];
cpuinfo_size = sizeof(cpuinfo_tmp);
status = sysctl(mib, STATIC_ARRAY_SIZE(mib), &cpuinfo_tmp, &cpuinfo_size,
NULL, 0);
if (status == -1) {
ERROR("cpu plugin: sysctl failed: %s.", STRERRNO);
return -1;
}
for (int i = 0; i < CPUSTATES; i++) {
cpuinfo[0][i] = cpuinfo_tmp[i];
}
}
for (int i = 0; i < numcpu; i++) {
cpu_stage(i, COLLECTD_CPU_STATE_USER, (derive_t)cpuinfo[i][CP_USER], now);
cpu_stage(i, COLLECTD_CPU_STATE_NICE, (derive_t)cpuinfo[i][CP_NICE], now);
cpu_stage(i, COLLECTD_CPU_STATE_SYSTEM, (derive_t)cpuinfo[i][CP_SYS], now);
cpu_stage(i, COLLECTD_CPU_STATE_IDLE, (derive_t)cpuinfo[i][CP_IDLE], now);
cpu_stage(i, COLLECTD_CPU_STATE_INTERRUPT, (derive_t)cpuinfo[i][CP_INTR],
now);
}
/* }}} #endif CAN_USE_SYSCTL */
#elif defined(HAVE_SYSCTLBYNAME) && defined(HAVE_SYSCTL_KERN_CP_TIMES) /* {{{ \
*/
long cpuinfo[maxcpu][CPUSTATES];
size_t cpuinfo_size;
memset(cpuinfo, 0, sizeof(cpuinfo));
cpuinfo_size = sizeof(cpuinfo);
if (sysctlbyname("kern.cp_times", &cpuinfo, &cpuinfo_size, NULL, 0) < 0) {
ERROR("cpu plugin: sysctlbyname failed: %s.", STRERRNO);
return -1;
}
for (int i = 0; i < numcpu; i++) {
cpu_stage(i, COLLECTD_CPU_STATE_USER, (derive_t)cpuinfo[i][CP_USER], now);
cpu_stage(i, COLLECTD_CPU_STATE_NICE, (derive_t)cpuinfo[i][CP_NICE], now);
cpu_stage(i, COLLECTD_CPU_STATE_SYSTEM, (derive_t)cpuinfo[i][CP_SYS], now);
cpu_stage(i, COLLECTD_CPU_STATE_IDLE, (derive_t)cpuinfo[i][CP_IDLE], now);
cpu_stage(i, COLLECTD_CPU_STATE_INTERRUPT, (derive_t)cpuinfo[i][CP_INTR],
now);
}
/* }}} #endif HAVE_SYSCTL_KERN_CP_TIMES */
#elif defined(HAVE_SYSCTLBYNAME) /* {{{ */
long cpuinfo[CPUSTATES];
size_t cpuinfo_size;
cpuinfo_size = sizeof(cpuinfo);
if (sysctlbyname("kern.cp_time", &cpuinfo, &cpuinfo_size, NULL, 0) < 0) {
ERROR("cpu plugin: sysctlbyname failed: %s.", STRERRNO);
return -1;
}
cpu_stage(0, COLLECTD_CPU_STATE_USER, (derive_t)cpuinfo[CP_USER], now);
cpu_stage(0, COLLECTD_CPU_STATE_NICE, (derive_t)cpuinfo[CP_NICE], now);
cpu_stage(0, COLLECTD_CPU_STATE_SYSTEM, (derive_t)cpuinfo[CP_SYS], now);
cpu_stage(0, COLLECTD_CPU_STATE_IDLE, (derive_t)cpuinfo[CP_IDLE], now);
cpu_stage(0, COLLECTD_CPU_STATE_INTERRUPT, (derive_t)cpuinfo[CP_INTR], now);
/* }}} #endif HAVE_SYSCTLBYNAME */
#elif defined(HAVE_LIBSTATGRAB) /* {{{ */
sg_cpu_stats *cs;
cs = sg_get_cpu_stats();
if (cs == NULL) {
ERROR("cpu plugin: sg_get_cpu_stats failed.");
return -1;
}
cpu_state(0, COLLECTD_CPU_STATE_IDLE, (derive_t)cs->idle);
cpu_state(0, COLLECTD_CPU_STATE_NICE, (derive_t)cs->nice);
cpu_state(0, COLLECTD_CPU_STATE_SWAP, (derive_t)cs->swap);
cpu_state(0, COLLECTD_CPU_STATE_SYSTEM, (derive_t)cs->kernel);
cpu_state(0, COLLECTD_CPU_STATE_USER, (derive_t)cs->user);
cpu_state(0, COLLECTD_CPU_STATE_WAIT, (derive_t)cs->iowait);
/* }}} #endif HAVE_LIBSTATGRAB */
#elif defined(HAVE_PERFSTAT) /* {{{ */
perfstat_id_t id;
int cpus;
numcpu = perfstat_cpu(NULL, NULL, sizeof(perfstat_cpu_t), 0);
if (numcpu == -1) {
WARNING("cpu plugin: perfstat_cpu: %s", STRERRNO);
return -1;
}
if (pnumcpu != numcpu || perfcpu == NULL) {
free(perfcpu);
perfcpu = malloc(numcpu * sizeof(perfstat_cpu_t));
}
pnumcpu = numcpu;
id.name[0] = '\0';
if ((cpus = perfstat_cpu(&id, perfcpu, sizeof(perfstat_cpu_t), numcpu)) < 0) {
WARNING("cpu plugin: perfstat_cpu: %s", STRERRNO);
return -1;
}
for (int i = 0; i < cpus; i++) {
cpu_stage(i, COLLECTD_CPU_STATE_IDLE, (derive_t)perfcpu[i].idle, now);
cpu_stage(i, COLLECTD_CPU_STATE_SYSTEM, (derive_t)perfcpu[i].sys, now);
cpu_stage(i, COLLECTD_CPU_STATE_USER, (derive_t)perfcpu[i].user, now);
cpu_stage(i, COLLECTD_CPU_STATE_WAIT, (derive_t)perfcpu[i].wait, now);
}
#endif /* }}} HAVE_PERFSTAT */
cpu_commit();
cpu_reset();
return 0;
}
void module_register(void) {
plugin_register_init("cpu", init);
plugin_register_config("cpu", cpu_config, config_keys, config_keys_num);
plugin_register_read("cpu", cpu_read);
} /* void module_register */