summaryrefslogtreecommitdiffstats
path: root/src/proc_stat.c
blob: 40bf5cfad6fa5100a0560c66303f87952f6a2b84 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
#include "common.h"

struct per_core_single_number_file {
    char found:1;
    const char *filename;
    int fd;
    collected_number value;
    RRDDIM *rd;
};

#define CORE_THROTTLE_COUNT_INDEX    0
#define PACKAGE_THROTTLE_COUNT_INDEX 1
#define SCALING_CUR_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];
};

static int keep_per_core_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 == -1)) {
            // 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);
        // info("read '%s', parsed as " COLLECTED_NUMBER_FORMAT, buf, f->value);
        if(likely(f->value != 0))
            files_nonzero++;
    }

    if(files_read == 0)
        return -1;

    if(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);
    }
}

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_scaling_cur_freq = -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;

    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(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_scaling_cur_freq = 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_scaling_cur_freq = CONFIG_BOOLEAN_NO;
        }

        keep_per_core_fds_open    = config_get_boolean("plugin:proc:/proc/stat", "keep per core files open", keep_per_core_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_scaling_cur_freq       = config_get_boolean_ondemand("plugin:proc:/proc/stat", "scaling_cur_freq", do_scaling_cur_freq);

        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);
    }

    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 && 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(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(core == 0) {
                        title = "Total CPU utilization";
                        type = "system";
                        context = "system.cpu";
                        family = id;
                        priority = 100;
                    }
                    else {
                        title = "Core utilization";
                        type = "cpu";
                        context = "cpu.cpu";
                        family = "utilization";
                        priority = 1000;

                        // FIXME: check for /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq
                        // FIXME: check for /sys/devices/system/cpu/cpu*/cpufreq/stats/time_in_state

                        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_scaling_cur_freq != CONFIG_BOOLEAN_NO) {
                            snprintfz(filename, FILENAME_MAX, scaling_cur_freq_filename, id);
                            if (stat(filename, &stbuf) == 0) {
                                cpu_chart->files[SCALING_CUR_FREQ_INDEX].filename = strdupz(filename);
                                cpu_chart->files[SCALING_CUR_FREQ_INDEX].fd = -1;
                                do_scaling_cur_freq = CONFIG_BOOLEAN_YES;
                            }
                        }
                    }

                    cpu_chart->st = rrdset_create_localhost(
                            type
                            , id
                            , NULL
                            , family
                            , context
                            , title
                            , "percentage"
                            , priority
                            , 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");
                }
                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"
                            , 900
                            , 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"
                            , 800
                            , 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"
                    , 700
                    , 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"
                    , 600
                    , 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"
                            , 5001
                            , 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"
                            , 5002
                            , 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_scaling_cur_freq != CONFIG_BOOLEAN_NO)) {
            int r = read_per_core_files(&all_cpu_charts[1], all_cpu_charts_size - 1, SCALING_CUR_FREQ_INDEX);
            if(likely(r != -1 && (do_scaling_cur_freq == CONFIG_BOOLEAN_YES || r > 0))) {
                do_scaling_cur_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"
                            , "scaling_cur_freq"
                            , NULL
                            , "cpufreq"
                            , "cpu.scaling_cur_freq"
                            , "Per CPU Core, Current CPU Scaling Frequency"
                            , "MHz"
                            , 5003
                            , 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, SCALING_CUR_FREQ_INDEX, st_scaling_cur_freq, 1, 1000, RRD_ALGORITHM_ABSOLUTE);
                rrdset_done(st_scaling_cur_freq);
            }
        }
    }

    return 0;
}