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-rw-r--r--collectors/proc.plugin/proc_stat.c1069
1 files changed, 1069 insertions, 0 deletions
diff --git a/collectors/proc.plugin/proc_stat.c b/collectors/proc.plugin/proc_stat.c
new file mode 100644
index 0000000..373a067
--- /dev/null
+++ b/collectors/proc.plugin/proc_stat.c
@@ -0,0 +1,1069 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_proc.h"
+
+#define PLUGIN_PROC_MODULE_STAT_NAME "/proc/stat"
+
+struct per_core_single_number_file {
+ unsigned char found:1;
+ const char *filename;
+ int fd;
+ collected_number value;
+ RRDDIM *rd;
+};
+
+struct last_ticks {
+ collected_number frequency;
+ collected_number ticks;
+};
+
+// This is an extension of struct per_core_single_number_file at CPU_FREQ_INDEX.
+// Either scaling_cur_freq or time_in_state file is used at one time.
+struct per_core_time_in_state_file {
+ const char *filename;
+ procfile *ff;
+ size_t last_ticks_len;
+ struct last_ticks *last_ticks;
+};
+
+#define CORE_THROTTLE_COUNT_INDEX 0
+#define PACKAGE_THROTTLE_COUNT_INDEX 1
+#define CPU_FREQ_INDEX 2
+#define PER_CORE_FILES 3
+
+struct cpu_chart {
+ const char *id;
+
+ RRDSET *st;
+ RRDDIM *rd_user;
+ RRDDIM *rd_nice;
+ RRDDIM *rd_system;
+ RRDDIM *rd_idle;
+ RRDDIM *rd_iowait;
+ RRDDIM *rd_irq;
+ RRDDIM *rd_softirq;
+ RRDDIM *rd_steal;
+ RRDDIM *rd_guest;
+ RRDDIM *rd_guest_nice;
+
+ struct per_core_single_number_file files[PER_CORE_FILES];
+
+ struct per_core_time_in_state_file time_in_state_files;
+};
+
+static int keep_per_core_fds_open = CONFIG_BOOLEAN_YES;
+static int keep_cpuidle_fds_open = CONFIG_BOOLEAN_YES;
+
+static int read_per_core_files(struct cpu_chart *all_cpu_charts, size_t len, size_t index) {
+ char buf[50 + 1];
+ size_t x, files_read = 0, files_nonzero = 0;
+
+ for(x = 0; x < len ; x++) {
+ struct per_core_single_number_file *f = &all_cpu_charts[x].files[index];
+
+ f->found = 0;
+
+ if(unlikely(!f->filename))
+ continue;
+
+ if(unlikely(f->fd == -1)) {
+ f->fd = open(f->filename, O_RDONLY);
+ if (unlikely(f->fd == -1)) {
+ error("Cannot open file '%s'", f->filename);
+ continue;
+ }
+ }
+
+ ssize_t ret = read(f->fd, buf, 50);
+ if(unlikely(ret < 0)) {
+ // cannot read that file
+
+ error("Cannot read file '%s'", f->filename);
+ close(f->fd);
+ f->fd = -1;
+ continue;
+ }
+ else {
+ // successful read
+
+ // terminate the buffer
+ buf[ret] = '\0';
+
+ if(unlikely(keep_per_core_fds_open != CONFIG_BOOLEAN_YES)) {
+ close(f->fd);
+ f->fd = -1;
+ }
+ else if(lseek(f->fd, 0, SEEK_SET) == -1) {
+ error("Cannot seek in file '%s'", f->filename);
+ close(f->fd);
+ f->fd = -1;
+ }
+ }
+
+ files_read++;
+ f->found = 1;
+
+ f->value = str2ll(buf, NULL);
+ if(likely(f->value != 0))
+ files_nonzero++;
+ }
+
+ if(files_read == 0)
+ return -1;
+
+ if(files_nonzero == 0)
+ return 0;
+
+ return (int)files_nonzero;
+}
+
+static int read_per_core_time_in_state_files(struct cpu_chart *all_cpu_charts, size_t len, size_t index) {
+ size_t x, files_read = 0, files_nonzero = 0;
+
+ for(x = 0; x < len ; x++) {
+ struct per_core_single_number_file *f = &all_cpu_charts[x].files[index];
+ struct per_core_time_in_state_file *tsf = &all_cpu_charts[x].time_in_state_files;
+
+ f->found = 0;
+
+ if(unlikely(!tsf->filename))
+ continue;
+
+ if(unlikely(!tsf->ff)) {
+ tsf->ff = procfile_open(tsf->filename, " \t:", PROCFILE_FLAG_DEFAULT);
+ if(unlikely(!tsf->ff))
+ {
+ error("Cannot open file '%s'", tsf->filename);
+ continue;
+ }
+ }
+
+ tsf->ff = procfile_readall(tsf->ff);
+ if(unlikely(!tsf->ff)) {
+ error("Cannot read file '%s'", tsf->filename);
+ procfile_close(tsf->ff);
+ tsf->ff = NULL;
+ continue;
+ }
+ else {
+ // successful read
+
+ size_t lines = procfile_lines(tsf->ff), l;
+ size_t words;
+ unsigned long long total_ticks_since_last = 0, avg_freq = 0;
+
+ // Check if there is at least one frequency in time_in_state
+ if (procfile_word(tsf->ff, 0)[0] == '\0') {
+ if(unlikely(keep_per_core_fds_open != CONFIG_BOOLEAN_YES)) {
+ procfile_close(tsf->ff);
+ tsf->ff = NULL;
+ }
+ // TODO: Is there a better way to avoid spikes than calculating the average over
+ // the whole period under schedutil governor?
+ // freez(tsf->last_ticks);
+ // tsf->last_ticks = NULL;
+ // tsf->last_ticks_len = 0;
+ continue;
+ }
+
+ if (unlikely(tsf->last_ticks_len < lines || tsf->last_ticks == NULL)) {
+ tsf->last_ticks = reallocz(tsf->last_ticks, sizeof(struct last_ticks) * lines);
+ memset(tsf->last_ticks, 0, sizeof(struct last_ticks) * lines);
+ tsf->last_ticks_len = lines;
+ }
+
+ f->value = 0;
+
+ for(l = 0; l < lines - 1 ;l++) {
+ unsigned long long frequency = 0, ticks = 0, ticks_since_last = 0;
+
+ words = procfile_linewords(tsf->ff, l);
+ if(unlikely(words < 2)) {
+ error("Cannot read time_in_state line. Expected 2 params, read %zu.", words);
+ continue;
+ }
+ frequency = str2ull(procfile_lineword(tsf->ff, l, 0));
+ ticks = str2ull(procfile_lineword(tsf->ff, l, 1));
+
+ // It is assumed that frequencies are static and sorted
+ ticks_since_last = ticks - tsf->last_ticks[l].ticks;
+ tsf->last_ticks[l].frequency = frequency;
+ tsf->last_ticks[l].ticks = ticks;
+
+ total_ticks_since_last += ticks_since_last;
+ avg_freq += frequency * ticks_since_last;
+
+ }
+
+ if (likely(total_ticks_since_last)) {
+ avg_freq /= total_ticks_since_last;
+ f->value = avg_freq;
+ }
+
+ if(unlikely(keep_per_core_fds_open != CONFIG_BOOLEAN_YES)) {
+ procfile_close(tsf->ff);
+ tsf->ff = NULL;
+ }
+ }
+
+ files_read++;
+
+ f->found = 1;
+
+ if(likely(f->value != 0))
+ files_nonzero++;
+ }
+
+ if(unlikely(files_read == 0))
+ return -1;
+
+ if(unlikely(files_nonzero == 0))
+ return 0;
+
+ return (int)files_nonzero;
+}
+
+static void chart_per_core_files(struct cpu_chart *all_cpu_charts, size_t len, size_t index, RRDSET *st, collected_number multiplier, collected_number divisor, RRD_ALGORITHM algorithm) {
+ size_t x;
+ for(x = 0; x < len ; x++) {
+ struct per_core_single_number_file *f = &all_cpu_charts[x].files[index];
+
+ if(unlikely(!f->found))
+ continue;
+
+ if(unlikely(!f->rd))
+ f->rd = rrddim_add(st, all_cpu_charts[x].id, NULL, multiplier, divisor, algorithm);
+
+ rrddim_set_by_pointer(st, f->rd, f->value);
+ }
+}
+
+struct cpuidle_state {
+ char *name;
+
+ char *time_filename;
+ int time_fd;
+
+ collected_number value;
+
+ RRDDIM *rd;
+};
+
+struct per_core_cpuidle_chart {
+ RRDSET *st;
+
+ RRDDIM *active_time_rd;
+ collected_number active_time;
+ collected_number last_active_time;
+
+ struct cpuidle_state *cpuidle_state;
+ size_t cpuidle_state_len;
+ int rescan_cpu_states;
+};
+
+static void* wake_cpu_thread(void* core) {
+ pthread_t thread;
+ cpu_set_t cpu_set;
+ static size_t cpu_wakeups = 0;
+ static int errors = 0;
+
+ CPU_ZERO(&cpu_set);
+ CPU_SET(*(int*)core, &cpu_set);
+
+ thread = pthread_self();
+ if(unlikely(pthread_setaffinity_np(thread, sizeof(cpu_set_t), &cpu_set))) {
+ if(unlikely(errors < 8)) {
+ error("Cannot set CPU affinity for core %d", *(int*)core);
+ errors++;
+ }
+ else if(unlikely(errors < 9)) {
+ error("CPU affinity errors are disabled");
+ errors++;
+ }
+ }
+
+ // Make the CPU core do something to force it to update its idle counters
+ cpu_wakeups++;
+
+ return 0;
+}
+
+static int read_schedstat(char *schedstat_filename, struct per_core_cpuidle_chart **cpuidle_charts_address, size_t *schedstat_cores_found) {
+ static size_t cpuidle_charts_len = 0;
+ static procfile *ff = NULL;
+ struct per_core_cpuidle_chart *cpuidle_charts = *cpuidle_charts_address;
+ size_t cores_found = 0;
+
+ if(unlikely(!ff)) {
+ ff = procfile_open(schedstat_filename, " \t:", PROCFILE_FLAG_DEFAULT);
+ if(unlikely(!ff)) return 1;
+ }
+
+ ff = procfile_readall(ff);
+ if(unlikely(!ff)) return 1;
+
+ size_t lines = procfile_lines(ff), l;
+ size_t words;
+
+ for(l = 0; l < lines ;l++) {
+ char *row_key = procfile_lineword(ff, l, 0);
+
+ // faster strncmp(row_key, "cpu", 3) == 0
+ if(likely(row_key[0] == 'c' && row_key[1] == 'p' && row_key[2] == 'u')) {
+ words = procfile_linewords(ff, l);
+ if(unlikely(words < 10)) {
+ error("Cannot read /proc/schedstat cpu line. Expected 9 params, read %zu.", words);
+ return 1;
+ }
+ cores_found++;
+
+ size_t core = str2ul(&row_key[3]);
+ if(unlikely(core >= cores_found)) {
+ error("Core %zu found but no more than %zu cores were expected.", core, cores_found);
+ return 1;
+ }
+
+ if(unlikely(cpuidle_charts_len < cores_found)) {
+ cpuidle_charts = reallocz(cpuidle_charts, sizeof(struct per_core_cpuidle_chart) * cores_found);
+ *cpuidle_charts_address = cpuidle_charts;
+ memset(cpuidle_charts + cpuidle_charts_len, 0, sizeof(struct per_core_cpuidle_chart) * (cores_found - cpuidle_charts_len));
+ cpuidle_charts_len = cores_found;
+ }
+
+ cpuidle_charts[core].active_time = str2ull(procfile_lineword(ff, l, 7)) / 1000;
+ }
+ }
+
+ *schedstat_cores_found = cores_found;
+ return 0;
+}
+
+static int read_one_state(char *buf, const char *filename, int *fd) {
+ ssize_t ret = read(*fd, buf, 50);
+
+ if(unlikely(ret <= 0)) {
+ // cannot read that file
+ error("Cannot read file '%s'", filename);
+ close(*fd);
+ *fd = -1;
+ return 0;
+ }
+ else {
+ // successful read
+
+ // terminate the buffer
+ buf[ret - 1] = '\0';
+
+ if(unlikely(keep_cpuidle_fds_open != CONFIG_BOOLEAN_YES)) {
+ close(*fd);
+ *fd = -1;
+ }
+ else if(lseek(*fd, 0, SEEK_SET) == -1) {
+ error("Cannot seek in file '%s'", filename);
+ close(*fd);
+ *fd = -1;
+ }
+ }
+
+ return 1;
+}
+
+static int read_cpuidle_states(char *cpuidle_name_filename , char *cpuidle_time_filename, struct per_core_cpuidle_chart *cpuidle_charts, size_t core) {
+ char filename[FILENAME_MAX + 1];
+ static char next_state_filename[FILENAME_MAX + 1];
+ struct stat stbuf;
+ struct per_core_cpuidle_chart *cc = &cpuidle_charts[core];
+ size_t state;
+
+ if(unlikely(!cc->cpuidle_state_len || cc->rescan_cpu_states)) {
+ int state_file_found = 1; // check at least one state
+
+ if(cc->cpuidle_state_len) {
+ for(state = 0; state < cc->cpuidle_state_len; state++) {
+ freez(cc->cpuidle_state[state].name);
+
+ freez(cc->cpuidle_state[state].time_filename);
+ close(cc->cpuidle_state[state].time_fd);
+ cc->cpuidle_state[state].time_fd = -1;
+ }
+
+ freez(cc->cpuidle_state);
+ cc->cpuidle_state = NULL;
+ cc->cpuidle_state_len = 0;
+
+ cc->active_time_rd = NULL;
+ cc->st = NULL;
+ }
+
+ while(likely(state_file_found)) {
+ snprintfz(filename, FILENAME_MAX, cpuidle_name_filename, core, cc->cpuidle_state_len);
+ if (stat(filename, &stbuf) == 0)
+ cc->cpuidle_state_len++;
+ else
+ state_file_found = 0;
+ }
+ snprintfz(next_state_filename, FILENAME_MAX, cpuidle_name_filename, core, cc->cpuidle_state_len);
+
+ if(likely(cc->cpuidle_state_len))
+ cc->cpuidle_state = callocz(cc->cpuidle_state_len, sizeof(struct cpuidle_state));
+
+ for(state = 0; state < cc->cpuidle_state_len; state++) {
+ char name_buf[50 + 1];
+ snprintfz(filename, FILENAME_MAX, cpuidle_name_filename, core, state);
+
+ int fd = open(filename, O_RDONLY, 0666);
+ if(unlikely(fd == -1)) {
+ error("Cannot open file '%s'", filename);
+ cc->rescan_cpu_states = 1;
+ return 1;
+ }
+
+ ssize_t r = read(fd, name_buf, 50);
+ if(unlikely(r < 1)) {
+ error("Cannot read file '%s'", filename);
+ close(fd);
+ cc->rescan_cpu_states = 1;
+ return 1;
+ }
+
+ name_buf[r - 1] = '\0'; // erase extra character
+ cc->cpuidle_state[state].name = strdupz(trim(name_buf));
+ close(fd);
+
+ snprintfz(filename, FILENAME_MAX, cpuidle_time_filename, core, state);
+ cc->cpuidle_state[state].time_filename = strdupz(filename);
+ cc->cpuidle_state[state].time_fd = -1;
+ }
+
+ cc->rescan_cpu_states = 0;
+ }
+
+ for(state = 0; state < cc->cpuidle_state_len; state++) {
+
+ struct cpuidle_state *cs = &cc->cpuidle_state[state];
+
+ if(unlikely(cs->time_fd == -1)) {
+ cs->time_fd = open(cs->time_filename, O_RDONLY);
+ if (unlikely(cs->time_fd == -1)) {
+ error("Cannot open file '%s'", cs->time_filename);
+ cc->rescan_cpu_states = 1;
+ return 1;
+ }
+ }
+
+ char time_buf[50 + 1];
+ if(likely(read_one_state(time_buf, cs->time_filename, &cs->time_fd))) {
+ cs->value = str2ll(time_buf, NULL);
+ }
+ else {
+ cc->rescan_cpu_states = 1;
+ return 1;
+ }
+ }
+
+ // check if the number of states was increased
+ if(unlikely(stat(next_state_filename, &stbuf) == 0)) {
+ cc->rescan_cpu_states = 1;
+ return 1;
+ }
+
+ return 0;
+}
+
+int do_proc_stat(int update_every, usec_t dt) {
+ (void)dt;
+
+ static struct cpu_chart *all_cpu_charts = NULL;
+ static size_t all_cpu_charts_size = 0;
+ static procfile *ff = NULL;
+ static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1,
+ do_core_throttle_count = -1, do_package_throttle_count = -1, do_cpu_freq = -1, do_cpuidle = -1;
+ static uint32_t hash_intr, hash_ctxt, hash_processes, hash_procs_running, hash_procs_blocked;
+ static char *core_throttle_count_filename = NULL, *package_throttle_count_filename = NULL, *scaling_cur_freq_filename = NULL,
+ *time_in_state_filename = NULL, *schedstat_filename = NULL, *cpuidle_name_filename = NULL, *cpuidle_time_filename = NULL;
+ static RRDVAR *cpus_var = NULL;
+ static int accurate_freq_avail = 0, accurate_freq_is_used = 0;
+ size_t cores_found = (size_t)processors;
+
+ if(unlikely(do_cpu == -1)) {
+ do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", CONFIG_BOOLEAN_YES);
+ do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", CONFIG_BOOLEAN_YES);
+ do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", CONFIG_BOOLEAN_YES);
+ do_context = config_get_boolean("plugin:proc:/proc/stat", "context switches", CONFIG_BOOLEAN_YES);
+ do_forks = config_get_boolean("plugin:proc:/proc/stat", "processes started", CONFIG_BOOLEAN_YES);
+ do_processes = config_get_boolean("plugin:proc:/proc/stat", "processes running", CONFIG_BOOLEAN_YES);
+
+ // give sane defaults based on the number of processors
+ if(unlikely(processors > 50)) {
+ // the system has too many processors
+ keep_per_core_fds_open = CONFIG_BOOLEAN_NO;
+ do_core_throttle_count = CONFIG_BOOLEAN_NO;
+ do_package_throttle_count = CONFIG_BOOLEAN_NO;
+ do_cpu_freq = CONFIG_BOOLEAN_NO;
+ do_cpuidle = CONFIG_BOOLEAN_NO;
+ }
+ else {
+ // the system has a reasonable number of processors
+ keep_per_core_fds_open = CONFIG_BOOLEAN_YES;
+ do_core_throttle_count = CONFIG_BOOLEAN_AUTO;
+ do_package_throttle_count = CONFIG_BOOLEAN_NO;
+ do_cpu_freq = CONFIG_BOOLEAN_YES;
+ do_cpuidle = CONFIG_BOOLEAN_YES;
+ }
+ if(unlikely(processors > 24)) {
+ // the system has too many processors
+ keep_cpuidle_fds_open = CONFIG_BOOLEAN_NO;
+ }
+ else {
+ // the system has a reasonable number of processors
+ keep_cpuidle_fds_open = CONFIG_BOOLEAN_YES;
+ }
+
+ keep_per_core_fds_open = config_get_boolean("plugin:proc:/proc/stat", "keep per core files open", keep_per_core_fds_open);
+ keep_cpuidle_fds_open = config_get_boolean("plugin:proc:/proc/stat", "keep cpuidle files open", keep_cpuidle_fds_open);
+ do_core_throttle_count = config_get_boolean_ondemand("plugin:proc:/proc/stat", "core_throttle_count", do_core_throttle_count);
+ do_package_throttle_count = config_get_boolean_ondemand("plugin:proc:/proc/stat", "package_throttle_count", do_package_throttle_count);
+ do_cpu_freq = config_get_boolean_ondemand("plugin:proc:/proc/stat", "cpu frequency", do_cpu_freq);
+ do_cpuidle = config_get_boolean_ondemand("plugin:proc:/proc/stat", "cpu idle states", do_cpuidle);
+
+ hash_intr = simple_hash("intr");
+ hash_ctxt = simple_hash("ctxt");
+ hash_processes = simple_hash("processes");
+ hash_procs_running = simple_hash("procs_running");
+ hash_procs_blocked = simple_hash("procs_blocked");
+
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/system/cpu/%s/thermal_throttle/core_throttle_count");
+ core_throttle_count_filename = config_get("plugin:proc:/proc/stat", "core_throttle_count filename to monitor", filename);
+
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/system/cpu/%s/thermal_throttle/package_throttle_count");
+ package_throttle_count_filename = config_get("plugin:proc:/proc/stat", "package_throttle_count filename to monitor", filename);
+
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/system/cpu/%s/cpufreq/scaling_cur_freq");
+ scaling_cur_freq_filename = config_get("plugin:proc:/proc/stat", "scaling_cur_freq filename to monitor", filename);
+
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/system/cpu/%s/cpufreq/stats/time_in_state");
+ time_in_state_filename = config_get("plugin:proc:/proc/stat", "time_in_state filename to monitor", filename);
+
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/schedstat");
+ schedstat_filename = config_get("plugin:proc:/proc/stat", "schedstat filename to monitor", filename);
+
+ if(do_cpuidle != CONFIG_BOOLEAN_NO) {
+ struct stat stbuf;
+
+ if (stat(schedstat_filename, &stbuf))
+ do_cpuidle = CONFIG_BOOLEAN_NO;
+ }
+
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/system/cpu/cpu%zu/cpuidle/state%zu/name");
+ cpuidle_name_filename = config_get("plugin:proc:/proc/stat", "cpuidle name filename to monitor", filename);
+
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/system/cpu/cpu%zu/cpuidle/state%zu/time");
+ cpuidle_time_filename = config_get("plugin:proc:/proc/stat", "cpuidle time filename to monitor", filename);
+ }
+
+ if(unlikely(!ff)) {
+ char filename[FILENAME_MAX + 1];
+ snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/stat");
+ ff = procfile_open(config_get("plugin:proc:/proc/stat", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
+ if(unlikely(!ff)) return 1;
+ }
+
+ ff = procfile_readall(ff);
+ if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time
+
+ size_t lines = procfile_lines(ff), l;
+ size_t words;
+
+ unsigned long long processes = 0, running = 0 , blocked = 0;
+
+ for(l = 0; l < lines ;l++) {
+ char *row_key = procfile_lineword(ff, l, 0);
+ uint32_t hash = simple_hash(row_key);
+
+ // faster strncmp(row_key, "cpu", 3) == 0
+ if(likely(row_key[0] == 'c' && row_key[1] == 'p' && row_key[2] == 'u')) {
+ words = procfile_linewords(ff, l);
+ if(unlikely(words < 9)) {
+ error("Cannot read /proc/stat cpu line. Expected 9 params, read %zu.", words);
+ continue;
+ }
+
+ size_t core = (row_key[3] == '\0') ? 0 : str2ul(&row_key[3]) + 1;
+ if(likely(core > 0)) cores_found = core;
+
+ if(likely((core == 0 && do_cpu) || (core > 0 && do_cpu_cores))) {
+ char *id;
+ unsigned long long user = 0, nice = 0, system = 0, idle = 0, iowait = 0, irq = 0, softirq = 0, steal = 0, guest = 0, guest_nice = 0;
+
+ id = row_key;
+ user = str2ull(procfile_lineword(ff, l, 1));
+ nice = str2ull(procfile_lineword(ff, l, 2));
+ system = str2ull(procfile_lineword(ff, l, 3));
+ idle = str2ull(procfile_lineword(ff, l, 4));
+ iowait = str2ull(procfile_lineword(ff, l, 5));
+ irq = str2ull(procfile_lineword(ff, l, 6));
+ softirq = str2ull(procfile_lineword(ff, l, 7));
+ steal = str2ull(procfile_lineword(ff, l, 8));
+
+ guest = str2ull(procfile_lineword(ff, l, 9));
+ user -= guest;
+
+ guest_nice = str2ull(procfile_lineword(ff, l, 10));
+ nice -= guest_nice;
+
+ char *title, *type, *context, *family;
+ long priority;
+
+ if(unlikely(core >= all_cpu_charts_size)) {
+ size_t old_cpu_charts_size = all_cpu_charts_size;
+ all_cpu_charts_size = core + 1;
+ all_cpu_charts = reallocz(all_cpu_charts, sizeof(struct cpu_chart) * all_cpu_charts_size);
+ memset(&all_cpu_charts[old_cpu_charts_size], 0, sizeof(struct cpu_chart) * (all_cpu_charts_size - old_cpu_charts_size));
+ }
+ struct cpu_chart *cpu_chart = &all_cpu_charts[core];
+
+ if(unlikely(!cpu_chart->st)) {
+ cpu_chart->id = strdupz(id);
+
+ if(unlikely(core == 0)) {
+ title = "Total CPU utilization";
+ type = "system";
+ context = "system.cpu";
+ family = id;
+ priority = NETDATA_CHART_PRIO_SYSTEM_CPU;
+ }
+ else {
+ title = "Core utilization";
+ type = "cpu";
+ context = "cpu.cpu";
+ family = "utilization";
+ priority = NETDATA_CHART_PRIO_CPU_PER_CORE;
+
+ char filename[FILENAME_MAX + 1];
+ struct stat stbuf;
+
+ if(do_core_throttle_count != CONFIG_BOOLEAN_NO) {
+ snprintfz(filename, FILENAME_MAX, core_throttle_count_filename, id);
+ if (stat(filename, &stbuf) == 0) {
+ cpu_chart->files[CORE_THROTTLE_COUNT_INDEX].filename = strdupz(filename);
+ cpu_chart->files[CORE_THROTTLE_COUNT_INDEX].fd = -1;
+ do_core_throttle_count = CONFIG_BOOLEAN_YES;
+ }
+ }
+
+ if(do_package_throttle_count != CONFIG_BOOLEAN_NO) {
+ snprintfz(filename, FILENAME_MAX, package_throttle_count_filename, id);
+ if (stat(filename, &stbuf) == 0) {
+ cpu_chart->files[PACKAGE_THROTTLE_COUNT_INDEX].filename = strdupz(filename);
+ cpu_chart->files[PACKAGE_THROTTLE_COUNT_INDEX].fd = -1;
+ do_package_throttle_count = CONFIG_BOOLEAN_YES;
+ }
+ }
+
+ if(do_cpu_freq != CONFIG_BOOLEAN_NO) {
+
+ snprintfz(filename, FILENAME_MAX, scaling_cur_freq_filename, id);
+
+ if (stat(filename, &stbuf) == 0) {
+ cpu_chart->files[CPU_FREQ_INDEX].filename = strdupz(filename);
+ cpu_chart->files[CPU_FREQ_INDEX].fd = -1;
+ do_cpu_freq = CONFIG_BOOLEAN_YES;
+ }
+
+ snprintfz(filename, FILENAME_MAX, time_in_state_filename, id);
+
+ if (stat(filename, &stbuf) == 0) {
+ cpu_chart->time_in_state_files.filename = strdupz(filename);
+ cpu_chart->time_in_state_files.ff = NULL;
+ do_cpu_freq = CONFIG_BOOLEAN_YES;
+ accurate_freq_avail = 1;
+ }
+ }
+ }
+
+ cpu_chart->st = rrdset_create_localhost(
+ type
+ , id
+ , NULL
+ , family
+ , context
+ , title
+ , "percentage"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , priority + core
+ , update_every
+ , RRDSET_TYPE_STACKED
+ );
+
+ long multiplier = 1;
+ long divisor = 1; // sysconf(_SC_CLK_TCK);
+
+ cpu_chart->rd_guest_nice = rrddim_add(cpu_chart->st, "guest_nice", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_guest = rrddim_add(cpu_chart->st, "guest", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_steal = rrddim_add(cpu_chart->st, "steal", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_softirq = rrddim_add(cpu_chart->st, "softirq", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_irq = rrddim_add(cpu_chart->st, "irq", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_user = rrddim_add(cpu_chart->st, "user", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_system = rrddim_add(cpu_chart->st, "system", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_nice = rrddim_add(cpu_chart->st, "nice", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_iowait = rrddim_add(cpu_chart->st, "iowait", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ cpu_chart->rd_idle = rrddim_add(cpu_chart->st, "idle", NULL, multiplier, divisor, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ rrddim_hide(cpu_chart->st, "idle");
+
+ if(unlikely(core == 0 && cpus_var == NULL))
+ cpus_var = rrdvar_custom_host_variable_create(localhost, "active_processors");
+ }
+ else rrdset_next(cpu_chart->st);
+
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_user, user);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_nice, nice);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_system, system);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_idle, idle);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_iowait, iowait);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_irq, irq);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_softirq, softirq);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_steal, steal);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_guest, guest);
+ rrddim_set_by_pointer(cpu_chart->st, cpu_chart->rd_guest_nice, guest_nice);
+ rrdset_done(cpu_chart->st);
+ }
+ }
+ else if(unlikely(hash == hash_intr && strcmp(row_key, "intr") == 0)) {
+ if(likely(do_interrupts)) {
+ static RRDSET *st_intr = NULL;
+ static RRDDIM *rd_interrupts = NULL;
+ unsigned long long value = str2ull(procfile_lineword(ff, l, 1));
+
+ if(unlikely(!st_intr)) {
+ st_intr = rrdset_create_localhost(
+ "system"
+ , "intr"
+ , NULL
+ , "interrupts"
+ , NULL
+ , "CPU Interrupts"
+ , "interrupts/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_SYSTEM_INTR
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(st_intr, RRDSET_FLAG_DETAIL);
+
+ rd_interrupts = rrddim_add(st_intr, "interrupts", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_intr);
+
+ rrddim_set_by_pointer(st_intr, rd_interrupts, value);
+ rrdset_done(st_intr);
+ }
+ }
+ else if(unlikely(hash == hash_ctxt && strcmp(row_key, "ctxt") == 0)) {
+ if(likely(do_context)) {
+ static RRDSET *st_ctxt = NULL;
+ static RRDDIM *rd_switches = NULL;
+ unsigned long long value = str2ull(procfile_lineword(ff, l, 1));
+
+ if(unlikely(!st_ctxt)) {
+ st_ctxt = rrdset_create_localhost(
+ "system"
+ , "ctxt"
+ , NULL
+ , "processes"
+ , NULL
+ , "CPU Context Switches"
+ , "context switches/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_SYSTEM_CTXT
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_switches = rrddim_add(st_ctxt, "switches", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_ctxt);
+
+ rrddim_set_by_pointer(st_ctxt, rd_switches, value);
+ rrdset_done(st_ctxt);
+ }
+ }
+ else if(unlikely(hash == hash_processes && !processes && strcmp(row_key, "processes") == 0)) {
+ processes = str2ull(procfile_lineword(ff, l, 1));
+ }
+ else if(unlikely(hash == hash_procs_running && !running && strcmp(row_key, "procs_running") == 0)) {
+ running = str2ull(procfile_lineword(ff, l, 1));
+ }
+ else if(unlikely(hash == hash_procs_blocked && !blocked && strcmp(row_key, "procs_blocked") == 0)) {
+ blocked = str2ull(procfile_lineword(ff, l, 1));
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ if(likely(do_forks)) {
+ static RRDSET *st_forks = NULL;
+ static RRDDIM *rd_started = NULL;
+
+ if(unlikely(!st_forks)) {
+ st_forks = rrdset_create_localhost(
+ "system"
+ , "forks"
+ , NULL
+ , "processes"
+ , NULL
+ , "Started Processes"
+ , "processes/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_SYSTEM_FORKS
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ rrdset_flag_set(st_forks, RRDSET_FLAG_DETAIL);
+
+ rd_started = rrddim_add(st_forks, "started", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ }
+ else rrdset_next(st_forks);
+
+ rrddim_set_by_pointer(st_forks, rd_started, processes);
+ rrdset_done(st_forks);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(likely(do_processes)) {
+ static RRDSET *st_processes = NULL;
+ static RRDDIM *rd_running = NULL;
+ static RRDDIM *rd_blocked = NULL;
+
+ if(unlikely(!st_processes)) {
+ st_processes = rrdset_create_localhost(
+ "system"
+ , "processes"
+ , NULL
+ , "processes"
+ , NULL
+ , "System Processes"
+ , "processes"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_SYSTEM_PROCESSES
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rd_running = rrddim_add(st_processes, "running", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rd_blocked = rrddim_add(st_processes, "blocked", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE);
+ }
+ else rrdset_next(st_processes);
+
+ rrddim_set_by_pointer(st_processes, rd_running, running);
+ rrddim_set_by_pointer(st_processes, rd_blocked, blocked);
+ rrdset_done(st_processes);
+ }
+
+ if(likely(all_cpu_charts_size > 1)) {
+ if(likely(do_core_throttle_count != CONFIG_BOOLEAN_NO)) {
+ int r = read_per_core_files(&all_cpu_charts[1], all_cpu_charts_size - 1, CORE_THROTTLE_COUNT_INDEX);
+ if(likely(r != -1 && (do_core_throttle_count == CONFIG_BOOLEAN_YES || r > 0))) {
+ do_core_throttle_count = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st_core_throttle_count = NULL;
+
+ if (unlikely(!st_core_throttle_count))
+ st_core_throttle_count = rrdset_create_localhost(
+ "cpu"
+ , "core_throttling"
+ , NULL
+ , "throttling"
+ , "cpu.core_throttling"
+ , "Core Thermal Throttling Events"
+ , "events/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_CORE_THROTTLING
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ else
+ rrdset_next(st_core_throttle_count);
+
+ chart_per_core_files(&all_cpu_charts[1], all_cpu_charts_size - 1, CORE_THROTTLE_COUNT_INDEX, st_core_throttle_count, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rrdset_done(st_core_throttle_count);
+ }
+ }
+
+ if(likely(do_package_throttle_count != CONFIG_BOOLEAN_NO)) {
+ int r = read_per_core_files(&all_cpu_charts[1], all_cpu_charts_size - 1, PACKAGE_THROTTLE_COUNT_INDEX);
+ if(likely(r != -1 && (do_package_throttle_count == CONFIG_BOOLEAN_YES || r > 0))) {
+ do_package_throttle_count = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st_package_throttle_count = NULL;
+
+ if(unlikely(!st_package_throttle_count))
+ st_package_throttle_count = rrdset_create_localhost(
+ "cpu"
+ , "package_throttling"
+ , NULL
+ , "throttling"
+ , "cpu.package_throttling"
+ , "Package Thermal Throttling Events"
+ , "events/s"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_PACKAGE_THROTTLING
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ else
+ rrdset_next(st_package_throttle_count);
+
+ chart_per_core_files(&all_cpu_charts[1], all_cpu_charts_size - 1, PACKAGE_THROTTLE_COUNT_INDEX, st_package_throttle_count, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ rrdset_done(st_package_throttle_count);
+ }
+ }
+
+ if(likely(do_cpu_freq != CONFIG_BOOLEAN_NO)) {
+ char filename[FILENAME_MAX + 1];
+ int r = 0;
+
+ if (accurate_freq_avail) {
+ r = read_per_core_time_in_state_files(&all_cpu_charts[1], all_cpu_charts_size - 1, CPU_FREQ_INDEX);
+ if(r > 0 && !accurate_freq_is_used) {
+ accurate_freq_is_used = 1;
+ snprintfz(filename, FILENAME_MAX, time_in_state_filename, "cpu*");
+ info("cpufreq is using %s", filename);
+ }
+ }
+ if (r < 1) {
+ r = read_per_core_files(&all_cpu_charts[1], all_cpu_charts_size - 1, CPU_FREQ_INDEX);
+ if(accurate_freq_is_used) {
+ accurate_freq_is_used = 0;
+ snprintfz(filename, FILENAME_MAX, scaling_cur_freq_filename, "cpu*");
+ info("cpufreq fell back to %s", filename);
+ }
+ }
+
+ if(likely(r != -1 && (do_cpu_freq == CONFIG_BOOLEAN_YES || r > 0))) {
+ do_cpu_freq = CONFIG_BOOLEAN_YES;
+
+ static RRDSET *st_scaling_cur_freq = NULL;
+
+ if(unlikely(!st_scaling_cur_freq))
+ st_scaling_cur_freq = rrdset_create_localhost(
+ "cpu"
+ , "cpufreq"
+ , NULL
+ , "cpufreq"
+ , "cpufreq.cpufreq"
+ , "Current CPU Frequency"
+ , "MHz"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_CPUFREQ_SCALING_CUR_FREQ
+ , update_every
+ , RRDSET_TYPE_LINE
+ );
+ else
+ rrdset_next(st_scaling_cur_freq);
+
+ chart_per_core_files(&all_cpu_charts[1], all_cpu_charts_size - 1, CPU_FREQ_INDEX, st_scaling_cur_freq, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
+ rrdset_done(st_scaling_cur_freq);
+ }
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ static struct per_core_cpuidle_chart *cpuidle_charts = NULL;
+ size_t schedstat_cores_found = 0;
+
+ if(likely(do_cpuidle != CONFIG_BOOLEAN_NO && !read_schedstat(schedstat_filename, &cpuidle_charts, &schedstat_cores_found))) {
+ int cpu_states_updated = 0;
+ size_t core, state;
+
+
+ // proc.plugin runs on Linux systems only. Multi-platform compatibility is not needed here,
+ // so bare pthread functions are used to avoid unneeded overheads.
+ for(core = 0; core < schedstat_cores_found; core++) {
+ if(unlikely(!(cpuidle_charts[core].active_time - cpuidle_charts[core].last_active_time))) {
+ pthread_t thread;
+ cpu_set_t global_cpu_set;
+
+ if (likely(!pthread_getaffinity_np(pthread_self(), sizeof(cpu_set_t), &global_cpu_set))) {
+ if (unlikely(!CPU_ISSET(core, &global_cpu_set))) {
+ continue;
+ }
+ }
+ else
+ error("Cannot read current process affinity");
+
+ // These threads are very ephemeral and don't need to have a specific name
+ if(unlikely(pthread_create(&thread, NULL, wake_cpu_thread, (void *)&core)))
+ error("Cannot create wake_cpu_thread");
+ else if(unlikely(pthread_join(thread, NULL)))
+ error("Cannot join wake_cpu_thread");
+ cpu_states_updated = 1;
+ }
+ }
+
+ if(unlikely(!cpu_states_updated || !read_schedstat(schedstat_filename, &cpuidle_charts, &schedstat_cores_found))) {
+ for(core = 0; core < schedstat_cores_found; core++) {
+ cpuidle_charts[core].last_active_time = cpuidle_charts[core].active_time;
+
+ int r = read_cpuidle_states(cpuidle_name_filename, cpuidle_time_filename, cpuidle_charts, core);
+ if(likely(r != -1 && (do_cpuidle == CONFIG_BOOLEAN_YES || r > 0))) {
+ do_cpuidle = CONFIG_BOOLEAN_YES;
+
+ char cpuidle_chart_id[RRD_ID_LENGTH_MAX + 1];
+ snprintfz(cpuidle_chart_id, RRD_ID_LENGTH_MAX, "cpu%zu_cpuidle", core);
+
+ if(unlikely(!cpuidle_charts[core].st)) {
+ cpuidle_charts[core].st = rrdset_create_localhost(
+ "cpu"
+ , cpuidle_chart_id
+ , NULL
+ , "cpuidle"
+ , "cpuidle.cpuidle"
+ , "C-state residency time"
+ , "percentage"
+ , PLUGIN_PROC_NAME
+ , PLUGIN_PROC_MODULE_STAT_NAME
+ , NETDATA_CHART_PRIO_CPUIDLE + core
+ , update_every
+ , RRDSET_TYPE_STACKED
+ );
+
+ char cpuidle_dim_id[RRD_ID_LENGTH_MAX + 1];
+ snprintfz(cpuidle_dim_id, RRD_ID_LENGTH_MAX, "cpu%zu_active_time", core);
+ cpuidle_charts[core].active_time_rd = rrddim_add(cpuidle_charts[core].st, cpuidle_dim_id, "C0 (active)", 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ for(state = 0; state < cpuidle_charts[core].cpuidle_state_len; state++) {
+ snprintfz(cpuidle_dim_id, RRD_ID_LENGTH_MAX, "cpu%zu_cpuidle_state%zu_time", core, state);
+ cpuidle_charts[core].cpuidle_state[state].rd = rrddim_add(cpuidle_charts[core].st, cpuidle_dim_id,
+ cpuidle_charts[core].cpuidle_state[state].name,
+ 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
+ }
+ }
+ else
+ rrdset_next(cpuidle_charts[core].st);
+
+ rrddim_set_by_pointer(cpuidle_charts[core].st, cpuidle_charts[core].active_time_rd, cpuidle_charts[core].active_time);
+ for(state = 0; state < cpuidle_charts[core].cpuidle_state_len; state++) {
+ rrddim_set_by_pointer(cpuidle_charts[core].st, cpuidle_charts[core].cpuidle_state[state].rd, cpuidle_charts[core].cpuidle_state[state].value);
+ }
+ rrdset_done(cpuidle_charts[core].st);
+ }
+ }
+ }
+ }
+
+ if(cpus_var)
+ rrdvar_custom_host_variable_set(localhost, cpus_var, cores_found);
+
+ return 0;
+}