[2725] | 1 | /* vi: set sw=4 ts=4: */
|
---|
| 2 | /*
|
---|
| 3 | * Report CPU and I/O stats, based on sysstat version 9.1.2 by Sebastien Godard
|
---|
| 4 | *
|
---|
| 5 | * Copyright (C) 2010 Marek Polacek <mmpolacek@gmail.com>
|
---|
| 6 | *
|
---|
| 7 | * Licensed under GPLv2, see file LICENSE in this source tree.
|
---|
| 8 | */
|
---|
| 9 |
|
---|
| 10 | //config:config IOSTAT
|
---|
| 11 | //config: bool "iostat"
|
---|
| 12 | //config: default y
|
---|
| 13 | //config: help
|
---|
| 14 | //config: Report CPU and I/O statistics
|
---|
| 15 |
|
---|
[3232] | 16 | //applet:IF_IOSTAT(APPLET(iostat, BB_DIR_BIN, BB_SUID_DROP))
|
---|
| 17 |
|
---|
| 18 | //kbuild:lib-$(CONFIG_IOSTAT) += iostat.o
|
---|
| 19 |
|
---|
[2725] | 20 | #include "libbb.h"
|
---|
[3232] | 21 | #include <sys/utsname.h> /* struct utsname */
|
---|
[2725] | 22 |
|
---|
| 23 | //#define debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
|
---|
| 24 | #define debug(fmt, ...) ((void)0)
|
---|
| 25 |
|
---|
| 26 | #define MAX_DEVICE_NAME 12
|
---|
[3232] | 27 | #define MAX_DEVICE_NAME_STR "12"
|
---|
[2725] | 28 |
|
---|
| 29 | #if 1
|
---|
| 30 | typedef unsigned long long cputime_t;
|
---|
| 31 | typedef long long icputime_t;
|
---|
| 32 | # define FMT_DATA "ll"
|
---|
| 33 | # define CPUTIME_MAX (~0ULL)
|
---|
| 34 | #else
|
---|
| 35 | typedef unsigned long cputime_t;
|
---|
| 36 | typedef long icputime_t;
|
---|
| 37 | # define FMT_DATA "l"
|
---|
| 38 | # define CPUTIME_MAX (~0UL)
|
---|
| 39 | #endif
|
---|
| 40 |
|
---|
[3232] | 41 | enum {
|
---|
| 42 | STATS_CPU_USER,
|
---|
| 43 | STATS_CPU_NICE,
|
---|
| 44 | STATS_CPU_SYSTEM,
|
---|
| 45 | STATS_CPU_IDLE,
|
---|
| 46 | STATS_CPU_IOWAIT,
|
---|
| 47 | STATS_CPU_IRQ,
|
---|
| 48 | STATS_CPU_SOFTIRQ,
|
---|
| 49 | STATS_CPU_STEAL,
|
---|
| 50 | STATS_CPU_GUEST,
|
---|
| 51 |
|
---|
| 52 | GLOBAL_UPTIME,
|
---|
| 53 | SMP_UPTIME,
|
---|
| 54 |
|
---|
| 55 | N_STATS_CPU,
|
---|
[2725] | 56 | };
|
---|
| 57 |
|
---|
[3232] | 58 | typedef struct {
|
---|
| 59 | cputime_t vector[N_STATS_CPU];
|
---|
| 60 | } stats_cpu_t;
|
---|
| 61 |
|
---|
| 62 | typedef struct {
|
---|
| 63 | stats_cpu_t *prev;
|
---|
| 64 | stats_cpu_t *curr;
|
---|
| 65 | cputime_t itv;
|
---|
| 66 | } stats_cpu_pair_t;
|
---|
| 67 |
|
---|
| 68 | typedef struct {
|
---|
[2725] | 69 | unsigned long long rd_sectors;
|
---|
| 70 | unsigned long long wr_sectors;
|
---|
| 71 | unsigned long rd_ops;
|
---|
| 72 | unsigned long wr_ops;
|
---|
[3232] | 73 | } stats_dev_data_t;
|
---|
[2725] | 74 |
|
---|
[3232] | 75 | typedef struct stats_dev {
|
---|
| 76 | struct stats_dev *next;
|
---|
| 77 | char dname[MAX_DEVICE_NAME + 1];
|
---|
| 78 | stats_dev_data_t prev_data;
|
---|
| 79 | stats_dev_data_t curr_data;
|
---|
| 80 | } stats_dev_t;
|
---|
[2725] | 81 |
|
---|
| 82 | /* Globals. Sort by size and access frequency. */
|
---|
| 83 | struct globals {
|
---|
| 84 | smallint show_all;
|
---|
| 85 | unsigned total_cpus; /* Number of CPUs */
|
---|
| 86 | unsigned clk_tck; /* Number of clock ticks per second */
|
---|
[3232] | 87 | llist_t *dev_name_list; /* List of devices entered on the command line */
|
---|
| 88 | stats_dev_t *stats_dev_list;
|
---|
[2725] | 89 | struct tm tmtime;
|
---|
[3232] | 90 | struct {
|
---|
| 91 | const char *str;
|
---|
| 92 | unsigned div;
|
---|
| 93 | } unit;
|
---|
[2725] | 94 | };
|
---|
| 95 | #define G (*ptr_to_globals)
|
---|
| 96 | #define INIT_G() do { \
|
---|
| 97 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
|
---|
[3232] | 98 | G.unit.str = "Blk"; \
|
---|
| 99 | G.unit.div = 1; \
|
---|
[2725] | 100 | } while (0)
|
---|
| 101 |
|
---|
| 102 | /* Must match option string! */
|
---|
| 103 | enum {
|
---|
| 104 | OPT_c = 1 << 0,
|
---|
| 105 | OPT_d = 1 << 1,
|
---|
| 106 | OPT_t = 1 << 2,
|
---|
| 107 | OPT_z = 1 << 3,
|
---|
| 108 | OPT_k = 1 << 4,
|
---|
| 109 | OPT_m = 1 << 5,
|
---|
| 110 | };
|
---|
| 111 |
|
---|
| 112 | static ALWAYS_INLINE int this_is_smp(void)
|
---|
| 113 | {
|
---|
| 114 | return (G.total_cpus > 1);
|
---|
| 115 | }
|
---|
| 116 |
|
---|
| 117 | static void print_header(void)
|
---|
| 118 | {
|
---|
[3232] | 119 | char buf[32];
|
---|
[2725] | 120 | struct utsname uts;
|
---|
| 121 |
|
---|
[3232] | 122 | uname(&uts); /* never fails */
|
---|
[2725] | 123 |
|
---|
[3232] | 124 | /* Date representation for the current locale */
|
---|
[2725] | 125 | strftime(buf, sizeof(buf), "%x", &G.tmtime);
|
---|
| 126 |
|
---|
[3232] | 127 | printf("%s %s (%s) \t%s \t_%s_\t(%u CPU)\n\n",
|
---|
[2725] | 128 | uts.sysname, uts.release, uts.nodename,
|
---|
| 129 | buf, uts.machine, G.total_cpus);
|
---|
| 130 | }
|
---|
| 131 |
|
---|
| 132 | static void get_localtime(struct tm *ptm)
|
---|
| 133 | {
|
---|
| 134 | time_t timer;
|
---|
| 135 | time(&timer);
|
---|
| 136 | localtime_r(&timer, ptm);
|
---|
| 137 | }
|
---|
| 138 |
|
---|
| 139 | static void print_timestamp(void)
|
---|
| 140 | {
|
---|
[3232] | 141 | char buf[64];
|
---|
| 142 | /* %x: date representation for the current locale */
|
---|
| 143 | /* %X: time representation for the current locale */
|
---|
[2725] | 144 | strftime(buf, sizeof(buf), "%x %X", &G.tmtime);
|
---|
[3621] | 145 | puts(buf);
|
---|
[2725] | 146 | }
|
---|
| 147 |
|
---|
[3232] | 148 | static cputime_t get_smp_uptime(void)
|
---|
| 149 | {
|
---|
| 150 | FILE *fp;
|
---|
| 151 | unsigned long sec, dec;
|
---|
| 152 |
|
---|
| 153 | fp = xfopen_for_read("/proc/uptime");
|
---|
| 154 |
|
---|
| 155 | if (fscanf(fp, "%lu.%lu", &sec, &dec) != 2)
|
---|
| 156 | bb_error_msg_and_die("can't read '%s'", "/proc/uptime");
|
---|
| 157 |
|
---|
| 158 | fclose(fp);
|
---|
| 159 |
|
---|
| 160 | return (cputime_t)sec * G.clk_tck + dec * G.clk_tck / 100;
|
---|
| 161 | }
|
---|
| 162 |
|
---|
[2725] | 163 | /* Fetch CPU statistics from /proc/stat */
|
---|
[3232] | 164 | static void get_cpu_statistics(stats_cpu_t *sc)
|
---|
[2725] | 165 | {
|
---|
| 166 | FILE *fp;
|
---|
| 167 | char buf[1024];
|
---|
| 168 |
|
---|
| 169 | fp = xfopen_for_read("/proc/stat");
|
---|
| 170 |
|
---|
| 171 | memset(sc, 0, sizeof(*sc));
|
---|
| 172 |
|
---|
| 173 | while (fgets(buf, sizeof(buf), fp)) {
|
---|
[3232] | 174 | int i;
|
---|
| 175 | char *ibuf;
|
---|
| 176 |
|
---|
| 177 | /* Does the line start with "cpu "? */
|
---|
| 178 | if (!starts_with_cpu(buf) || buf[3] != ' ') {
|
---|
| 179 | continue;
|
---|
[2725] | 180 | }
|
---|
[3232] | 181 | ibuf = buf + 4;
|
---|
| 182 | for (i = STATS_CPU_USER; i <= STATS_CPU_GUEST; i++) {
|
---|
| 183 | ibuf = skip_whitespace(ibuf);
|
---|
| 184 | sscanf(ibuf, "%"FMT_DATA"u", &sc->vector[i]);
|
---|
| 185 | if (i != STATS_CPU_GUEST) {
|
---|
| 186 | sc->vector[GLOBAL_UPTIME] += sc->vector[i];
|
---|
| 187 | }
|
---|
| 188 | ibuf = skip_non_whitespace(ibuf);
|
---|
| 189 | }
|
---|
| 190 | break;
|
---|
[2725] | 191 | }
|
---|
| 192 |
|
---|
[3232] | 193 | if (this_is_smp()) {
|
---|
| 194 | sc->vector[SMP_UPTIME] = get_smp_uptime();
|
---|
| 195 | }
|
---|
[2725] | 196 |
|
---|
| 197 | fclose(fp);
|
---|
| 198 | }
|
---|
| 199 |
|
---|
| 200 | static ALWAYS_INLINE cputime_t get_interval(cputime_t old, cputime_t new)
|
---|
| 201 | {
|
---|
| 202 | cputime_t itv = new - old;
|
---|
| 203 |
|
---|
| 204 | return (itv == 0) ? 1 : itv;
|
---|
| 205 | }
|
---|
| 206 |
|
---|
| 207 | #if CPUTIME_MAX > 0xffffffff
|
---|
| 208 | /*
|
---|
| 209 | * Handle overflow conditions properly for counters which can have
|
---|
| 210 | * less bits than cputime_t, depending on the kernel version.
|
---|
| 211 | */
|
---|
| 212 | /* Surprisingly, on 32bit inlining is a size win */
|
---|
| 213 | static ALWAYS_INLINE cputime_t overflow_safe_sub(cputime_t prev, cputime_t curr)
|
---|
| 214 | {
|
---|
| 215 | cputime_t v = curr - prev;
|
---|
| 216 |
|
---|
| 217 | if ((icputime_t)v < 0 /* curr < prev - counter overflow? */
|
---|
| 218 | && prev <= 0xffffffff /* kernel uses 32bit value for the counter? */
|
---|
| 219 | ) {
|
---|
| 220 | /* Add 33th bit set to 1 to curr, compensating for the overflow */
|
---|
| 221 | /* double shift defeats "warning: left shift count >= width of type" */
|
---|
| 222 | v += ((cputime_t)1 << 16) << 16;
|
---|
| 223 | }
|
---|
| 224 | return v;
|
---|
| 225 | }
|
---|
| 226 | #else
|
---|
| 227 | static ALWAYS_INLINE cputime_t overflow_safe_sub(cputime_t prev, cputime_t curr)
|
---|
| 228 | {
|
---|
| 229 | return curr - prev;
|
---|
| 230 | }
|
---|
| 231 | #endif
|
---|
| 232 |
|
---|
| 233 | static double percent_value(cputime_t prev, cputime_t curr, cputime_t itv)
|
---|
| 234 | {
|
---|
| 235 | return ((double)overflow_safe_sub(prev, curr)) / itv * 100;
|
---|
| 236 | }
|
---|
| 237 |
|
---|
[3232] | 238 | static void print_stats_cpu_struct(stats_cpu_pair_t *stats)
|
---|
[2725] | 239 | {
|
---|
[3232] | 240 | cputime_t *p = stats->prev->vector;
|
---|
| 241 | cputime_t *c = stats->curr->vector;
|
---|
| 242 | printf(" %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f\n",
|
---|
| 243 | percent_value(p[STATS_CPU_USER] , c[STATS_CPU_USER] , stats->itv),
|
---|
| 244 | percent_value(p[STATS_CPU_NICE] , c[STATS_CPU_NICE] , stats->itv),
|
---|
| 245 | percent_value(p[STATS_CPU_SYSTEM] + p[STATS_CPU_SOFTIRQ] + p[STATS_CPU_IRQ],
|
---|
| 246 | c[STATS_CPU_SYSTEM] + c[STATS_CPU_SOFTIRQ] + c[STATS_CPU_IRQ], stats->itv),
|
---|
| 247 | percent_value(p[STATS_CPU_IOWAIT], c[STATS_CPU_IOWAIT], stats->itv),
|
---|
| 248 | percent_value(p[STATS_CPU_STEAL] , c[STATS_CPU_STEAL] , stats->itv),
|
---|
| 249 | percent_value(p[STATS_CPU_IDLE] , c[STATS_CPU_IDLE] , stats->itv)
|
---|
[2725] | 250 | );
|
---|
| 251 | }
|
---|
| 252 |
|
---|
[3232] | 253 | static void cpu_report(stats_cpu_pair_t *stats)
|
---|
[2725] | 254 | {
|
---|
[3232] | 255 | /* Always print a header */
|
---|
| 256 | puts("avg-cpu: %user %nice %system %iowait %steal %idle");
|
---|
[2725] | 257 |
|
---|
[3232] | 258 | /* Print current statistics */
|
---|
| 259 | print_stats_cpu_struct(stats);
|
---|
| 260 | }
|
---|
[2725] | 261 |
|
---|
[3232] | 262 | static void print_stats_dev_struct(stats_dev_t *stats_dev, cputime_t itv)
|
---|
| 263 | {
|
---|
| 264 | stats_dev_data_t *p = &stats_dev->prev_data;
|
---|
| 265 | stats_dev_data_t *c = &stats_dev->curr_data;
|
---|
[2725] | 266 | if (option_mask32 & OPT_z)
|
---|
| 267 | if (p->rd_ops == c->rd_ops && p->wr_ops == c->wr_ops)
|
---|
| 268 | return;
|
---|
| 269 |
|
---|
[3232] | 270 | printf("%-13s %8.2f %12.2f %12.2f %10llu %10llu\n",
|
---|
| 271 | stats_dev->dname,
|
---|
| 272 | percent_value(p->rd_ops + p->wr_ops, c->rd_ops + c->wr_ops, itv),
|
---|
| 273 | percent_value(p->rd_sectors, c->rd_sectors, itv) / G.unit.div,
|
---|
| 274 | percent_value(p->wr_sectors, c->wr_sectors, itv) / G.unit.div,
|
---|
| 275 | (c->rd_sectors - p->rd_sectors) / G.unit.div,
|
---|
| 276 | (c->wr_sectors - p->wr_sectors) / G.unit.div
|
---|
| 277 | );
|
---|
[2725] | 278 | }
|
---|
| 279 |
|
---|
| 280 | static void print_devstat_header(void)
|
---|
| 281 | {
|
---|
[3232] | 282 | printf("Device:%15s%6s%s/s%6s%s/s%6s%s%6s%s\n",
|
---|
| 283 | "tps",
|
---|
| 284 | G.unit.str, "_read", G.unit.str, "_wrtn",
|
---|
| 285 | G.unit.str, "_read", G.unit.str, "_wrtn"
|
---|
| 286 | );
|
---|
[2725] | 287 | }
|
---|
| 288 |
|
---|
| 289 | /*
|
---|
| 290 | * Is input partition of format [sdaN]?
|
---|
| 291 | */
|
---|
| 292 | static int is_partition(const char *dev)
|
---|
| 293 | {
|
---|
| 294 | /* Ok, this is naive... */
|
---|
| 295 | return ((dev[0] - 's') | (dev[1] - 'd') | (dev[2] - 'a')) == 0 && isdigit(dev[3]);
|
---|
| 296 | }
|
---|
| 297 |
|
---|
[3232] | 298 | static stats_dev_t *stats_dev_find_or_new(const char *dev_name)
|
---|
[2725] | 299 | {
|
---|
[3232] | 300 | stats_dev_t **curr = &G.stats_dev_list;
|
---|
[2725] | 301 |
|
---|
[3232] | 302 | while (*curr != NULL) {
|
---|
| 303 | if (strcmp((*curr)->dname, dev_name) == 0)
|
---|
| 304 | return *curr;
|
---|
| 305 | curr = &(*curr)->next;
|
---|
| 306 | }
|
---|
[2725] | 307 |
|
---|
[3232] | 308 | *curr = xzalloc(sizeof(stats_dev_t));
|
---|
| 309 | strncpy((*curr)->dname, dev_name, MAX_DEVICE_NAME);
|
---|
| 310 | return *curr;
|
---|
[2725] | 311 | }
|
---|
| 312 |
|
---|
[3232] | 313 | static void stats_dev_free(stats_dev_t *stats_dev)
|
---|
[2725] | 314 | {
|
---|
[3232] | 315 | if (stats_dev) {
|
---|
| 316 | stats_dev_free(stats_dev->next);
|
---|
| 317 | free(stats_dev);
|
---|
| 318 | }
|
---|
[2725] | 319 | }
|
---|
| 320 |
|
---|
| 321 | static void do_disk_statistics(cputime_t itv)
|
---|
| 322 | {
|
---|
[3232] | 323 | char buf[128];
|
---|
| 324 | char dev_name[MAX_DEVICE_NAME + 1];
|
---|
| 325 | unsigned long long rd_sec_or_dummy;
|
---|
| 326 | unsigned long long wr_sec_or_dummy;
|
---|
| 327 | stats_dev_data_t *curr_data;
|
---|
| 328 | stats_dev_t *stats_dev;
|
---|
[2725] | 329 | FILE *fp;
|
---|
| 330 | int rc;
|
---|
| 331 |
|
---|
| 332 | fp = xfopen_for_read("/proc/diskstats");
|
---|
| 333 | /* Read and possibly print stats from /proc/diskstats */
|
---|
| 334 | while (fgets(buf, sizeof(buf), fp)) {
|
---|
[3232] | 335 | sscanf(buf, "%*s %*s %"MAX_DEVICE_NAME_STR"s", dev_name);
|
---|
| 336 | if (G.dev_name_list) {
|
---|
| 337 | /* Is device name in list? */
|
---|
| 338 | if (!llist_find_str(G.dev_name_list, dev_name))
|
---|
| 339 | continue;
|
---|
| 340 | } else if (is_partition(dev_name)) {
|
---|
| 341 | continue;
|
---|
| 342 | }
|
---|
[2725] | 343 |
|
---|
[3232] | 344 | stats_dev = stats_dev_find_or_new(dev_name);
|
---|
| 345 | curr_data = &stats_dev->curr_data;
|
---|
| 346 |
|
---|
| 347 | rc = sscanf(buf, "%*s %*s %*s %lu %llu %llu %llu %lu %*s %llu",
|
---|
| 348 | &curr_data->rd_ops,
|
---|
| 349 | &rd_sec_or_dummy,
|
---|
| 350 | &curr_data->rd_sectors,
|
---|
| 351 | &wr_sec_or_dummy,
|
---|
| 352 | &curr_data->wr_ops,
|
---|
| 353 | &curr_data->wr_sectors);
|
---|
| 354 | if (rc != 6) {
|
---|
| 355 | curr_data->rd_sectors = rd_sec_or_dummy;
|
---|
| 356 | curr_data->wr_sectors = wr_sec_or_dummy;
|
---|
| 357 | //curr_data->rd_ops = ;
|
---|
| 358 | curr_data->wr_ops = (unsigned long)curr_data->rd_sectors;
|
---|
[2725] | 359 | }
|
---|
| 360 |
|
---|
[3232] | 361 | if (!G.dev_name_list /* User didn't specify device */
|
---|
| 362 | && !G.show_all
|
---|
| 363 | && curr_data->rd_ops == 0
|
---|
| 364 | && curr_data->wr_ops == 0
|
---|
| 365 | ) {
|
---|
| 366 | /* Don't print unused device */
|
---|
| 367 | continue;
|
---|
[2725] | 368 | }
|
---|
[3232] | 369 |
|
---|
| 370 | /* Print current statistics */
|
---|
| 371 | print_stats_dev_struct(stats_dev, itv);
|
---|
| 372 | stats_dev->prev_data = *curr_data;
|
---|
[2725] | 373 | }
|
---|
| 374 |
|
---|
| 375 | fclose(fp);
|
---|
| 376 | }
|
---|
| 377 |
|
---|
| 378 | static void dev_report(cputime_t itv)
|
---|
| 379 | {
|
---|
| 380 | /* Always print a header */
|
---|
| 381 | print_devstat_header();
|
---|
| 382 |
|
---|
| 383 | /* Fetch current disk statistics */
|
---|
| 384 | do_disk_statistics(itv);
|
---|
| 385 | }
|
---|
| 386 |
|
---|
| 387 | //usage:#define iostat_trivial_usage
|
---|
| 388 | //usage: "[-c] [-d] [-t] [-z] [-k|-m] [ALL|BLOCKDEV...] [INTERVAL [COUNT]]"
|
---|
| 389 | //usage:#define iostat_full_usage "\n\n"
|
---|
| 390 | //usage: "Report CPU and I/O statistics\n"
|
---|
| 391 | //usage: "\n -c Show CPU utilization"
|
---|
| 392 | //usage: "\n -d Show device utilization"
|
---|
| 393 | //usage: "\n -t Print current time"
|
---|
| 394 | //usage: "\n -z Omit devices with no activity"
|
---|
| 395 | //usage: "\n -k Use kb/s"
|
---|
| 396 | //usage: "\n -m Use Mb/s"
|
---|
| 397 |
|
---|
| 398 | int iostat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
[3232] | 399 | int iostat_main(int argc UNUSED_PARAM, char **argv)
|
---|
[2725] | 400 | {
|
---|
[3232] | 401 | int opt;
|
---|
| 402 | unsigned interval;
|
---|
[2725] | 403 | int count;
|
---|
[3232] | 404 | stats_cpu_t stats_data[2];
|
---|
| 405 | smallint current_stats;
|
---|
[2725] | 406 |
|
---|
| 407 | INIT_G();
|
---|
| 408 |
|
---|
[3232] | 409 | memset(&stats_data, 0, sizeof(stats_data));
|
---|
[2725] | 410 |
|
---|
| 411 | /* Get number of clock ticks per sec */
|
---|
[3621] | 412 | G.clk_tck = bb_clk_tck();
|
---|
[2725] | 413 |
|
---|
| 414 | /* Determine number of CPUs */
|
---|
| 415 | G.total_cpus = get_cpu_count();
|
---|
| 416 | if (G.total_cpus == 0)
|
---|
| 417 | G.total_cpus = 1;
|
---|
| 418 |
|
---|
| 419 | /* Parse and process arguments */
|
---|
| 420 | /* -k and -m are mutually exclusive */
|
---|
| 421 | opt_complementary = "k--m:m--k";
|
---|
| 422 | opt = getopt32(argv, "cdtzkm");
|
---|
| 423 | if (!(opt & (OPT_c + OPT_d)))
|
---|
| 424 | /* Default is -cd */
|
---|
| 425 | opt |= OPT_c + OPT_d;
|
---|
| 426 |
|
---|
| 427 | argv += optind;
|
---|
| 428 |
|
---|
| 429 | /* Store device names into device list */
|
---|
| 430 | while (*argv && !isdigit(*argv[0])) {
|
---|
[3232] | 431 | if (strcmp(*argv, "ALL") != 0) {
|
---|
[2725] | 432 | /* If not ALL, save device name */
|
---|
[3232] | 433 | char *dev_name = skip_dev_pfx(*argv);
|
---|
| 434 | if (!llist_find_str(G.dev_name_list, dev_name)) {
|
---|
| 435 | llist_add_to(&G.dev_name_list, dev_name);
|
---|
| 436 | }
|
---|
| 437 | } else {
|
---|
[2725] | 438 | G.show_all = 1;
|
---|
[3232] | 439 | }
|
---|
[2725] | 440 | argv++;
|
---|
| 441 | }
|
---|
| 442 |
|
---|
[3232] | 443 | interval = 0;
|
---|
[2725] | 444 | count = 1;
|
---|
| 445 | if (*argv) {
|
---|
| 446 | /* Get interval */
|
---|
| 447 | interval = xatoi_positive(*argv);
|
---|
| 448 | count = (interval != 0 ? -1 : 1);
|
---|
| 449 | argv++;
|
---|
| 450 | if (*argv)
|
---|
| 451 | /* Get count value */
|
---|
| 452 | count = xatoi_positive(*argv);
|
---|
| 453 | }
|
---|
| 454 |
|
---|
[3232] | 455 | if (opt & OPT_m) {
|
---|
| 456 | G.unit.str = " MB";
|
---|
| 457 | G.unit.div = 2048;
|
---|
[2725] | 458 | }
|
---|
| 459 |
|
---|
[3232] | 460 | if (opt & OPT_k) {
|
---|
| 461 | G.unit.str = " kB";
|
---|
| 462 | G.unit.div = 2;
|
---|
| 463 | }
|
---|
| 464 |
|
---|
| 465 | get_localtime(&G.tmtime);
|
---|
| 466 |
|
---|
[2725] | 467 | /* Display header */
|
---|
| 468 | print_header();
|
---|
| 469 |
|
---|
[3232] | 470 | current_stats = 0;
|
---|
[2725] | 471 | /* Main loop */
|
---|
| 472 | for (;;) {
|
---|
[3232] | 473 | stats_cpu_pair_t stats;
|
---|
| 474 |
|
---|
| 475 | stats.prev = &stats_data[current_stats ^ 1];
|
---|
| 476 | stats.curr = &stats_data[current_stats];
|
---|
| 477 |
|
---|
[2725] | 478 | /* Fill the time structure */
|
---|
| 479 | get_localtime(&G.tmtime);
|
---|
| 480 |
|
---|
| 481 | /* Fetch current CPU statistics */
|
---|
[3232] | 482 | get_cpu_statistics(stats.curr);
|
---|
[2725] | 483 |
|
---|
| 484 | /* Get interval */
|
---|
[3232] | 485 | stats.itv = get_interval(
|
---|
| 486 | stats.prev->vector[GLOBAL_UPTIME],
|
---|
| 487 | stats.curr->vector[GLOBAL_UPTIME]
|
---|
| 488 | );
|
---|
[2725] | 489 |
|
---|
| 490 | if (opt & OPT_t)
|
---|
| 491 | print_timestamp();
|
---|
| 492 |
|
---|
| 493 | if (opt & OPT_c) {
|
---|
[3232] | 494 | cpu_report(&stats);
|
---|
[2725] | 495 | if (opt & OPT_d)
|
---|
| 496 | /* Separate outputs by a newline */
|
---|
| 497 | bb_putchar('\n');
|
---|
| 498 | }
|
---|
| 499 |
|
---|
| 500 | if (opt & OPT_d) {
|
---|
| 501 | if (this_is_smp()) {
|
---|
[3232] | 502 | stats.itv = get_interval(
|
---|
| 503 | stats.prev->vector[SMP_UPTIME],
|
---|
| 504 | stats.curr->vector[SMP_UPTIME]
|
---|
| 505 | );
|
---|
[2725] | 506 | }
|
---|
[3232] | 507 | dev_report(stats.itv);
|
---|
[2725] | 508 | }
|
---|
| 509 |
|
---|
[3232] | 510 | bb_putchar('\n');
|
---|
| 511 |
|
---|
[2725] | 512 | if (count > 0) {
|
---|
| 513 | if (--count == 0)
|
---|
| 514 | break;
|
---|
| 515 | }
|
---|
| 516 |
|
---|
[3232] | 517 | /* Swap stats */
|
---|
| 518 | current_stats ^= 1;
|
---|
[2725] | 519 |
|
---|
| 520 | sleep(interval);
|
---|
| 521 | }
|
---|
| 522 |
|
---|
| 523 | if (ENABLE_FEATURE_CLEAN_UP) {
|
---|
[3232] | 524 | llist_free(G.dev_name_list, NULL);
|
---|
| 525 | stats_dev_free(G.stats_dev_list);
|
---|
[2725] | 526 | free(&G);
|
---|
| 527 | }
|
---|
| 528 |
|
---|
| 529 | return EXIT_SUCCESS;
|
---|
| 530 | }
|
---|