1075 lines
44 KiB
C
1075 lines
44 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
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#include "plugin_proc.h"
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#define PLUGIN_PROC_MODULE_STAT_NAME "/proc/stat"
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struct per_core_single_number_file {
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unsigned char found:1;
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const char *filename;
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int fd;
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collected_number value;
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RRDDIM *rd;
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};
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struct last_ticks {
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collected_number frequency;
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collected_number ticks;
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};
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// This is an extension of struct per_core_single_number_file at CPU_FREQ_INDEX.
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// Either scaling_cur_freq or time_in_state file is used at one time.
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struct per_core_time_in_state_file {
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const char *filename;
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procfile *ff;
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size_t last_ticks_len;
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struct last_ticks *last_ticks;
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};
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#define CORE_THROTTLE_COUNT_INDEX 0
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#define PACKAGE_THROTTLE_COUNT_INDEX 1
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#define CPU_FREQ_INDEX 2
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#define PER_CORE_FILES 3
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struct cpu_chart {
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const char *id;
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RRDSET *st;
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RRDDIM *rd_user;
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RRDDIM *rd_nice;
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RRDDIM *rd_system;
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RRDDIM *rd_idle;
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RRDDIM *rd_iowait;
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RRDDIM *rd_irq;
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RRDDIM *rd_softirq;
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RRDDIM *rd_steal;
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RRDDIM *rd_guest;
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RRDDIM *rd_guest_nice;
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struct per_core_single_number_file files[PER_CORE_FILES];
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struct per_core_time_in_state_file time_in_state_files;
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};
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static int keep_per_core_fds_open = CONFIG_BOOLEAN_YES;
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static int keep_cpuidle_fds_open = CONFIG_BOOLEAN_YES;
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static int read_per_core_files(struct cpu_chart *all_cpu_charts, size_t len, size_t index) {
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char buf[50 + 1];
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size_t x, files_read = 0, files_nonzero = 0;
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for(x = 0; x < len ; x++) {
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struct per_core_single_number_file *f = &all_cpu_charts[x].files[index];
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f->found = 0;
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if(unlikely(!f->filename))
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continue;
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if(unlikely(f->fd == -1)) {
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f->fd = open(f->filename, O_RDONLY);
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if (unlikely(f->fd == -1)) {
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error("Cannot open file '%s'", f->filename);
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continue;
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}
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}
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ssize_t ret = read(f->fd, buf, 50);
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if(unlikely(ret < 0)) {
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// cannot read that file
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error("Cannot read file '%s'", f->filename);
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close(f->fd);
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f->fd = -1;
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continue;
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}
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else {
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// successful read
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// terminate the buffer
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buf[ret] = '\0';
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if(unlikely(keep_per_core_fds_open != CONFIG_BOOLEAN_YES)) {
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close(f->fd);
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f->fd = -1;
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}
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else if(lseek(f->fd, 0, SEEK_SET) == -1) {
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error("Cannot seek in file '%s'", f->filename);
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close(f->fd);
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f->fd = -1;
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}
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}
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files_read++;
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f->found = 1;
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f->value = str2ll(buf, NULL);
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if(likely(f->value != 0))
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files_nonzero++;
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}
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if(files_read == 0)
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return -1;
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if(files_nonzero == 0)
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return 0;
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return (int)files_nonzero;
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}
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static int read_per_core_time_in_state_files(struct cpu_chart *all_cpu_charts, size_t len, size_t index) {
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size_t x, files_read = 0, files_nonzero = 0;
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for(x = 0; x < len ; x++) {
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struct per_core_single_number_file *f = &all_cpu_charts[x].files[index];
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struct per_core_time_in_state_file *tsf = &all_cpu_charts[x].time_in_state_files;
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f->found = 0;
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if(unlikely(!tsf->filename))
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continue;
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if(unlikely(!tsf->ff)) {
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tsf->ff = procfile_open(tsf->filename, " \t:", PROCFILE_FLAG_DEFAULT);
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if(unlikely(!tsf->ff))
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{
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error("Cannot open file '%s'", tsf->filename);
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continue;
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}
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}
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tsf->ff = procfile_readall(tsf->ff);
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if(unlikely(!tsf->ff)) {
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error("Cannot read file '%s'", tsf->filename);
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procfile_close(tsf->ff);
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tsf->ff = NULL;
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continue;
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}
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else {
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// successful read
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size_t lines = procfile_lines(tsf->ff), l;
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size_t words;
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unsigned long long total_ticks_since_last = 0, avg_freq = 0;
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// Check if there is at least one frequency in time_in_state
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if (procfile_word(tsf->ff, 0)[0] == '\0') {
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if(unlikely(keep_per_core_fds_open != CONFIG_BOOLEAN_YES)) {
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procfile_close(tsf->ff);
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tsf->ff = NULL;
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}
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// TODO: Is there a better way to avoid spikes than calculating the average over
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// the whole period under schedutil governor?
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// freez(tsf->last_ticks);
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// tsf->last_ticks = NULL;
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// tsf->last_ticks_len = 0;
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continue;
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}
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if (unlikely(tsf->last_ticks_len < lines || tsf->last_ticks == NULL)) {
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tsf->last_ticks = reallocz(tsf->last_ticks, sizeof(struct last_ticks) * lines);
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memset(tsf->last_ticks, 0, sizeof(struct last_ticks) * lines);
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tsf->last_ticks_len = lines;
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}
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f->value = 0;
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for(l = 0; l < lines - 1 ;l++) {
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unsigned long long frequency = 0, ticks = 0, ticks_since_last = 0;
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words = procfile_linewords(tsf->ff, l);
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if(unlikely(words < 2)) {
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error("Cannot read time_in_state line. Expected 2 params, read %zu.", words);
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continue;
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}
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frequency = str2ull(procfile_lineword(tsf->ff, l, 0));
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ticks = str2ull(procfile_lineword(tsf->ff, l, 1));
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// It is assumed that frequencies are static and sorted
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ticks_since_last = ticks - tsf->last_ticks[l].ticks;
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tsf->last_ticks[l].frequency = frequency;
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tsf->last_ticks[l].ticks = ticks;
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total_ticks_since_last += ticks_since_last;
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avg_freq += frequency * ticks_since_last;
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}
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if (likely(total_ticks_since_last)) {
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avg_freq /= total_ticks_since_last;
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f->value = avg_freq;
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}
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if(unlikely(keep_per_core_fds_open != CONFIG_BOOLEAN_YES)) {
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procfile_close(tsf->ff);
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tsf->ff = NULL;
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}
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}
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files_read++;
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f->found = 1;
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if(likely(f->value != 0))
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files_nonzero++;
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}
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if(unlikely(files_read == 0))
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return -1;
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if(unlikely(files_nonzero == 0))
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return 0;
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return (int)files_nonzero;
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}
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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) {
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size_t x;
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for(x = 0; x < len ; x++) {
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struct per_core_single_number_file *f = &all_cpu_charts[x].files[index];
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if(unlikely(!f->found))
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continue;
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if(unlikely(!f->rd))
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f->rd = rrddim_add(st, all_cpu_charts[x].id, NULL, multiplier, divisor, algorithm);
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rrddim_set_by_pointer(st, f->rd, f->value);
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}
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}
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struct cpuidle_state {
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char *name;
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char *time_filename;
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int time_fd;
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collected_number value;
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RRDDIM *rd;
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};
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struct per_core_cpuidle_chart {
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RRDSET *st;
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RRDDIM *active_time_rd;
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collected_number active_time;
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collected_number last_active_time;
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struct cpuidle_state *cpuidle_state;
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size_t cpuidle_state_len;
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int rescan_cpu_states;
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};
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static void* wake_cpu_thread(void* core) {
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pthread_t thread;
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cpu_set_t cpu_set;
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static size_t cpu_wakeups = 0;
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static int errors = 0;
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CPU_ZERO(&cpu_set);
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CPU_SET(*(int*)core, &cpu_set);
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thread = pthread_self();
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if(unlikely(pthread_setaffinity_np(thread, sizeof(cpu_set_t), &cpu_set))) {
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if(unlikely(errors < 8)) {
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error("Cannot set CPU affinity for core %d", *(int*)core);
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errors++;
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}
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else if(unlikely(errors < 9)) {
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error("CPU affinity errors are disabled");
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errors++;
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}
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}
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// Make the CPU core do something to force it to update its idle counters
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cpu_wakeups++;
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return 0;
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}
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static int read_schedstat(char *schedstat_filename, struct per_core_cpuidle_chart **cpuidle_charts_address, size_t *schedstat_cores_found) {
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static size_t cpuidle_charts_len = 0;
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static procfile *ff = NULL;
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struct per_core_cpuidle_chart *cpuidle_charts = *cpuidle_charts_address;
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size_t cores_found = 0;
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if(unlikely(!ff)) {
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ff = procfile_open(schedstat_filename, " \t:", PROCFILE_FLAG_DEFAULT);
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if(unlikely(!ff)) return 1;
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}
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ff = procfile_readall(ff);
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if(unlikely(!ff)) return 1;
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size_t lines = procfile_lines(ff), l;
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size_t words;
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for(l = 0; l < lines ;l++) {
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char *row_key = procfile_lineword(ff, l, 0);
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// faster strncmp(row_key, "cpu", 3) == 0
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if(likely(row_key[0] == 'c' && row_key[1] == 'p' && row_key[2] == 'u')) {
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words = procfile_linewords(ff, l);
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if(unlikely(words < 10)) {
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error("Cannot read /proc/schedstat cpu line. Expected 9 params, read %zu.", words);
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return 1;
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}
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cores_found++;
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size_t core = str2ul(&row_key[3]);
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if(unlikely(core >= cores_found)) {
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error("Core %zu found but no more than %zu cores were expected.", core, cores_found);
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return 1;
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}
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if(unlikely(cpuidle_charts_len < cores_found)) {
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cpuidle_charts = reallocz(cpuidle_charts, sizeof(struct per_core_cpuidle_chart) * cores_found);
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*cpuidle_charts_address = cpuidle_charts;
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memset(cpuidle_charts + cpuidle_charts_len, 0, sizeof(struct per_core_cpuidle_chart) * (cores_found - cpuidle_charts_len));
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cpuidle_charts_len = cores_found;
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}
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cpuidle_charts[core].active_time = str2ull(procfile_lineword(ff, l, 7)) / 1000;
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}
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}
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*schedstat_cores_found = cores_found;
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return 0;
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}
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static int read_one_state(char *buf, const char *filename, int *fd) {
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ssize_t ret = read(*fd, buf, 50);
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if(unlikely(ret <= 0)) {
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// cannot read that file
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error("Cannot read file '%s'", filename);
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close(*fd);
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*fd = -1;
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return 0;
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}
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else {
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// successful read
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// terminate the buffer
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buf[ret - 1] = '\0';
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if(unlikely(keep_cpuidle_fds_open != CONFIG_BOOLEAN_YES)) {
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close(*fd);
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*fd = -1;
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}
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else if(lseek(*fd, 0, SEEK_SET) == -1) {
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error("Cannot seek in file '%s'", filename);
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close(*fd);
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*fd = -1;
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}
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}
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return 1;
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}
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static int read_cpuidle_states(char *cpuidle_name_filename , char *cpuidle_time_filename, struct per_core_cpuidle_chart *cpuidle_charts, size_t core) {
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char filename[FILENAME_MAX + 1];
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static char next_state_filename[FILENAME_MAX + 1];
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struct stat stbuf;
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struct per_core_cpuidle_chart *cc = &cpuidle_charts[core];
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size_t state;
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if(unlikely(!cc->cpuidle_state_len || cc->rescan_cpu_states)) {
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int state_file_found = 1; // check at least one state
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if(cc->cpuidle_state_len) {
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for(state = 0; state < cc->cpuidle_state_len; state++) {
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freez(cc->cpuidle_state[state].name);
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freez(cc->cpuidle_state[state].time_filename);
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close(cc->cpuidle_state[state].time_fd);
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cc->cpuidle_state[state].time_fd = -1;
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}
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freez(cc->cpuidle_state);
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cc->cpuidle_state = NULL;
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cc->cpuidle_state_len = 0;
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cc->active_time_rd = NULL;
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cc->st = NULL;
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}
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while(likely(state_file_found)) {
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snprintfz(filename, FILENAME_MAX, cpuidle_name_filename, core, cc->cpuidle_state_len);
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if (stat(filename, &stbuf) == 0)
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cc->cpuidle_state_len++;
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else
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state_file_found = 0;
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}
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snprintfz(next_state_filename, FILENAME_MAX, cpuidle_name_filename, core, cc->cpuidle_state_len);
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if(likely(cc->cpuidle_state_len))
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cc->cpuidle_state = callocz(cc->cpuidle_state_len, sizeof(struct cpuidle_state));
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for(state = 0; state < cc->cpuidle_state_len; state++) {
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char name_buf[50 + 1];
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snprintfz(filename, FILENAME_MAX, cpuidle_name_filename, core, state);
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int fd = open(filename, O_RDONLY, 0666);
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if(unlikely(fd == -1)) {
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error("Cannot open file '%s'", filename);
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cc->rescan_cpu_states = 1;
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return 1;
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}
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ssize_t r = read(fd, name_buf, 50);
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if(unlikely(r < 1)) {
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error("Cannot read file '%s'", filename);
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close(fd);
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cc->rescan_cpu_states = 1;
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return 1;
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}
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name_buf[r - 1] = '\0'; // erase extra character
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cc->cpuidle_state[state].name = strdupz(trim(name_buf));
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close(fd);
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snprintfz(filename, FILENAME_MAX, cpuidle_time_filename, core, state);
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cc->cpuidle_state[state].time_filename = strdupz(filename);
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cc->cpuidle_state[state].time_fd = -1;
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}
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cc->rescan_cpu_states = 0;
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}
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for(state = 0; state < cc->cpuidle_state_len; state++) {
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struct cpuidle_state *cs = &cc->cpuidle_state[state];
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if(unlikely(cs->time_fd == -1)) {
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cs->time_fd = open(cs->time_filename, O_RDONLY);
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if (unlikely(cs->time_fd == -1)) {
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error("Cannot open file '%s'", cs->time_filename);
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cc->rescan_cpu_states = 1;
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return 1;
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}
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}
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char time_buf[50 + 1];
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if(likely(read_one_state(time_buf, cs->time_filename, &cs->time_fd))) {
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cs->value = str2ll(time_buf, NULL);
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}
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else {
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cc->rescan_cpu_states = 1;
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return 1;
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}
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}
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// check if the number of states was increased
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if(unlikely(stat(next_state_filename, &stbuf) == 0)) {
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cc->rescan_cpu_states = 1;
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return 1;
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}
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return 0;
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}
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int do_proc_stat(int update_every, usec_t dt) {
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(void)dt;
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static struct cpu_chart *all_cpu_charts = NULL;
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static size_t all_cpu_charts_size = 0;
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static procfile *ff = NULL;
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static int do_cpu = -1, do_cpu_cores = -1, do_interrupts = -1, do_context = -1, do_forks = -1, do_processes = -1,
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do_core_throttle_count = -1, do_package_throttle_count = -1, do_cpu_freq = -1, do_cpuidle = -1;
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static uint32_t hash_intr, hash_ctxt, hash_processes, hash_procs_running, hash_procs_blocked;
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static char *core_throttle_count_filename = NULL, *package_throttle_count_filename = NULL, *scaling_cur_freq_filename = NULL,
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*time_in_state_filename = NULL, *schedstat_filename = NULL, *cpuidle_name_filename = NULL, *cpuidle_time_filename = NULL;
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static const RRDVAR_ACQUIRED *cpus_var = NULL;
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static int accurate_freq_avail = 0, accurate_freq_is_used = 0;
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size_t cores_found = (size_t)processors;
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if(unlikely(do_cpu == -1)) {
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do_cpu = config_get_boolean("plugin:proc:/proc/stat", "cpu utilization", CONFIG_BOOLEAN_YES);
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do_cpu_cores = config_get_boolean("plugin:proc:/proc/stat", "per cpu core utilization", CONFIG_BOOLEAN_YES);
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do_interrupts = config_get_boolean("plugin:proc:/proc/stat", "cpu interrupts", CONFIG_BOOLEAN_YES);
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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_add_and_acquire(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.cpu_cstate_residency_time"
|
|
, "C-state residency time"
|
|
, "percentage"
|
|
, PLUGIN_PROC_NAME
|
|
, PLUGIN_PROC_MODULE_STAT_NAME
|
|
, NETDATA_CHART_PRIO_CPUIDLE + core
|
|
, update_every
|
|
, RRDSET_TYPE_STACKED
|
|
);
|
|
|
|
char corebuf[50+1];
|
|
snprintfz(corebuf, 50, "cpu%zu", core);
|
|
rrdlabels_add(cpuidle_charts[core].st->rrdlabels, "cpu", corebuf, RRDLABEL_SRC_AUTO);
|
|
|
|
char cpuidle_dim_id[RRD_ID_LENGTH_MAX + 1];
|
|
cpuidle_charts[core].active_time_rd = rrddim_add(cpuidle_charts[core].st, "active", "C0 (active)", 1, 1, RRD_ALGORITHM_PCENT_OVER_DIFF_TOTAL);
|
|
for(state = 0; state < cpuidle_charts[core].cpuidle_state_len; state++) {
|
|
strncpyz(cpuidle_dim_id, cpuidle_charts[core].cpuidle_state[state].name, RRD_ID_LENGTH_MAX);
|
|
for(int i = 0; cpuidle_dim_id[i]; i++)
|
|
cpuidle_dim_id[i] = tolower(cpuidle_dim_id[i]);
|
|
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;
|
|
}
|