[3320] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Report CPU and I/O stats, based on sysstat version 9.1.2 by Sebastien Godard
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| 4 | *
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| 5 | * Copyright (C) 2010 Marek Polacek <mmpolacek@gmail.com>
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| 6 | *
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| 7 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 8 | */
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| 9 |
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| 10 | //applet:IF_IOSTAT(APPLET(iostat, _BB_DIR_BIN, _BB_SUID_DROP))
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| 11 |
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| 12 | //kbuild:lib-$(CONFIG_IOSTAT) += iostat.o
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| 13 |
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| 14 | //config:config IOSTAT
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| 15 | //config: bool "iostat"
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| 16 | //config: default y
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| 17 | //config: help
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| 18 | //config: Report CPU and I/O statistics
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| 19 |
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| 20 | #include "libbb.h"
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| 21 | #include <sys/utsname.h> /* Need struct utsname */
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| 22 |
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| 23 | //#define debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
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| 24 | #define debug(fmt, ...) ((void)0)
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| 25 |
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| 26 | #define MAX_DEVICE_NAME 12
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| 27 | #define CURRENT 0
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| 28 | #define LAST 1
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| 29 |
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| 30 | #if 1
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| 31 | typedef unsigned long long cputime_t;
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| 32 | typedef long long icputime_t;
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| 33 | # define FMT_DATA "ll"
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| 34 | # define CPUTIME_MAX (~0ULL)
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| 35 | #else
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| 36 | typedef unsigned long cputime_t;
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| 37 | typedef long icputime_t;
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| 38 | # define FMT_DATA "l"
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| 39 | # define CPUTIME_MAX (~0UL)
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| 40 | #endif
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| 41 |
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| 42 | struct stats_cpu {
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| 43 | cputime_t cpu_user;
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| 44 | cputime_t cpu_nice;
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| 45 | cputime_t cpu_system;
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| 46 | cputime_t cpu_idle;
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| 47 | cputime_t cpu_iowait;
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| 48 | cputime_t cpu_steal;
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| 49 | cputime_t cpu_irq;
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| 50 | cputime_t cpu_softirq;
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| 51 | cputime_t cpu_guest;
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| 52 | };
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| 53 |
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| 54 | struct stats_dev {
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| 55 | char dname[MAX_DEVICE_NAME];
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| 56 | unsigned long long rd_sectors;
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| 57 | unsigned long long wr_sectors;
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| 58 | unsigned long rd_ops;
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| 59 | unsigned long wr_ops;
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| 60 | };
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| 61 |
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| 62 | /* List of devices entered on the command line */
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| 63 | struct device_list {
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| 64 | char dname[MAX_DEVICE_NAME];
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| 65 | };
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| 66 |
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| 67 | /* Globals. Sort by size and access frequency. */
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| 68 | struct globals {
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| 69 | smallint show_all;
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| 70 | unsigned devlist_i; /* Index to the list of devices */
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| 71 | unsigned total_cpus; /* Number of CPUs */
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| 72 | unsigned clk_tck; /* Number of clock ticks per second */
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| 73 | struct device_list *dlist;
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| 74 | struct stats_dev *saved_stats_dev;
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| 75 | struct tm tmtime;
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| 76 | };
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| 77 | #define G (*ptr_to_globals)
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| 78 | #define INIT_G() do { \
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| 79 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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| 80 | } while (0)
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| 81 |
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| 82 | /* Must match option string! */
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| 83 | enum {
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| 84 | OPT_c = 1 << 0,
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| 85 | OPT_d = 1 << 1,
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| 86 | OPT_t = 1 << 2,
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| 87 | OPT_z = 1 << 3,
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| 88 | OPT_k = 1 << 4,
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| 89 | OPT_m = 1 << 5,
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| 90 | };
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| 91 |
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| 92 | static ALWAYS_INLINE unsigned get_user_hz(void)
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| 93 | {
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| 94 | return sysconf(_SC_CLK_TCK);
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| 95 | }
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| 96 |
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| 97 | static ALWAYS_INLINE int this_is_smp(void)
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| 98 | {
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| 99 | return (G.total_cpus > 1);
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| 100 | }
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| 101 |
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| 102 | static void print_header(void)
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| 103 | {
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| 104 | char buf[16];
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| 105 | struct utsname uts;
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| 106 |
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| 107 | if (uname(&uts) < 0)
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| 108 | bb_perror_msg_and_die("uname");
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| 109 |
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| 110 | strftime(buf, sizeof(buf), "%x", &G.tmtime);
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| 111 |
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| 112 | printf("%s %s (%s) \t%s \t_%s_\t(%d CPU)\n\n",
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| 113 | uts.sysname, uts.release, uts.nodename,
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| 114 | buf, uts.machine, G.total_cpus);
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| 115 | }
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| 116 |
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| 117 | static void get_localtime(struct tm *ptm)
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| 118 | {
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| 119 | time_t timer;
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| 120 | time(&timer);
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| 121 | localtime_r(&timer, ptm);
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| 122 | }
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| 123 |
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| 124 | static void print_timestamp(void)
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| 125 | {
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| 126 | char buf[20];
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| 127 | strftime(buf, sizeof(buf), "%x %X", &G.tmtime);
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| 128 | printf("%s\n", buf);
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| 129 | }
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| 130 |
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| 131 | /* Fetch CPU statistics from /proc/stat */
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| 132 | static void get_cpu_statistics(struct stats_cpu *sc)
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| 133 | {
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| 134 | FILE *fp;
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| 135 | char buf[1024];
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| 136 |
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| 137 | fp = xfopen_for_read("/proc/stat");
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| 138 |
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| 139 | memset(sc, 0, sizeof(*sc));
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| 140 |
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| 141 | while (fgets(buf, sizeof(buf), fp)) {
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| 142 | /* Does the line starts with "cpu "? */
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| 143 | if (starts_with_cpu(buf) && buf[3] == ' ') {
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| 144 | sscanf(buf + 4 + 1,
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| 145 | "%"FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u %"
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| 146 | FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u",
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| 147 | &sc->cpu_user, &sc->cpu_nice, &sc->cpu_system,
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| 148 | &sc->cpu_idle, &sc->cpu_iowait, &sc->cpu_irq,
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| 149 | &sc->cpu_softirq, &sc->cpu_steal, &sc->cpu_guest);
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| 150 | }
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| 151 | }
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| 152 |
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| 153 | fclose(fp);
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| 154 | }
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| 155 |
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| 156 | static cputime_t get_smp_uptime(void)
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| 157 | {
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| 158 | FILE *fp;
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| 159 | char buf[sizeof(long)*3 * 2 + 4];
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| 160 | unsigned long sec, dec;
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| 161 |
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| 162 | fp = xfopen_for_read("/proc/uptime");
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| 163 |
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| 164 | if (fgets(buf, sizeof(buf), fp))
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| 165 | if (sscanf(buf, "%lu.%lu", &sec, &dec) != 2)
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| 166 | bb_error_msg_and_die("can't read /proc/uptime");
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| 167 |
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| 168 | fclose(fp);
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| 169 |
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| 170 | return (cputime_t)sec * G.clk_tck + dec * G.clk_tck / 100;
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| 171 | }
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| 172 |
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| 173 | /*
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| 174 | * Obtain current uptime in jiffies.
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| 175 | * Uptime is sum of individual CPUs' uptimes.
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| 176 | */
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| 177 | static cputime_t get_uptime(const struct stats_cpu *sc)
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| 178 | {
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| 179 | /* NB: Don't include cpu_guest, it is already in cpu_user */
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| 180 | return sc->cpu_user + sc->cpu_nice + sc->cpu_system + sc->cpu_idle +
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| 181 | + sc->cpu_iowait + sc->cpu_irq + sc->cpu_steal + sc->cpu_softirq;
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| 182 | }
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| 183 |
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| 184 | static ALWAYS_INLINE cputime_t get_interval(cputime_t old, cputime_t new)
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| 185 | {
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| 186 | cputime_t itv = new - old;
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| 187 |
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| 188 | return (itv == 0) ? 1 : itv;
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| 189 | }
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| 190 |
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| 191 | #if CPUTIME_MAX > 0xffffffff
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| 192 | /*
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| 193 | * Handle overflow conditions properly for counters which can have
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| 194 | * less bits than cputime_t, depending on the kernel version.
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| 195 | */
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| 196 | /* Surprisingly, on 32bit inlining is a size win */
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| 197 | static ALWAYS_INLINE cputime_t overflow_safe_sub(cputime_t prev, cputime_t curr)
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| 198 | {
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| 199 | cputime_t v = curr - prev;
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| 200 |
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| 201 | if ((icputime_t)v < 0 /* curr < prev - counter overflow? */
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| 202 | && prev <= 0xffffffff /* kernel uses 32bit value for the counter? */
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| 203 | ) {
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| 204 | /* Add 33th bit set to 1 to curr, compensating for the overflow */
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| 205 | /* double shift defeats "warning: left shift count >= width of type" */
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| 206 | v += ((cputime_t)1 << 16) << 16;
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| 207 | }
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| 208 | return v;
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| 209 | }
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| 210 | #else
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| 211 | static ALWAYS_INLINE cputime_t overflow_safe_sub(cputime_t prev, cputime_t curr)
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| 212 | {
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| 213 | return curr - prev;
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| 214 | }
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| 215 | #endif
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| 216 |
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| 217 | static double percent_value(cputime_t prev, cputime_t curr, cputime_t itv)
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| 218 | {
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| 219 | return ((double)overflow_safe_sub(prev, curr)) / itv * 100;
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| 220 | }
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| 221 |
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| 222 | static void print_stats_cpu_struct(const struct stats_cpu *p,
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| 223 | const struct stats_cpu *c, cputime_t itv)
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| 224 | {
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| 225 | printf(" %6.2f %6.2f %6.2f %6.2f %6.2f %6.2f\n",
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| 226 | percent_value(p->cpu_user , c->cpu_user , itv),
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| 227 | percent_value(p->cpu_nice , c->cpu_nice , itv),
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| 228 | percent_value(p->cpu_system + p->cpu_softirq + p->cpu_irq,
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| 229 | c->cpu_system + c->cpu_softirq + c->cpu_irq, itv),
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| 230 | percent_value(p->cpu_iowait , c->cpu_iowait , itv),
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| 231 | percent_value(p->cpu_steal , c->cpu_steal , itv),
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| 232 | percent_value(p->cpu_idle , c->cpu_idle , itv)
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| 233 | );
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| 234 | }
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| 235 |
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| 236 | static void print_stats_dev_struct(const struct stats_dev *p,
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| 237 | const struct stats_dev *c, cputime_t itv)
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| 238 | {
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| 239 | int unit = 1;
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| 240 |
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| 241 | if (option_mask32 & OPT_k)
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| 242 | unit = 2;
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| 243 | else if (option_mask32 & OPT_m)
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| 244 | unit = 2048;
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| 245 |
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| 246 | if (option_mask32 & OPT_z)
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| 247 | if (p->rd_ops == c->rd_ops && p->wr_ops == c->wr_ops)
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| 248 | return;
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| 249 |
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| 250 | printf("%-13s", c->dname);
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| 251 | printf(" %8.2f %12.2f %12.2f %10llu %10llu \n",
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| 252 | percent_value(p->rd_ops + p->wr_ops ,
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| 253 | /**/ c->rd_ops + c->wr_ops , itv),
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| 254 | percent_value(p->rd_sectors, c->rd_sectors, itv) / unit,
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| 255 | percent_value(p->wr_sectors, c->wr_sectors, itv) / unit,
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| 256 | (c->rd_sectors - p->rd_sectors) / unit,
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| 257 | (c->wr_sectors - p->wr_sectors) / unit);
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| 258 | }
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| 259 |
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| 260 | static void cpu_report(const struct stats_cpu *last,
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| 261 | const struct stats_cpu *cur,
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| 262 | cputime_t itv)
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| 263 | {
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| 264 | /* Always print a header */
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| 265 | puts("avg-cpu: %user %nice %system %iowait %steal %idle");
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| 266 |
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| 267 | /* Print current statistics */
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| 268 | print_stats_cpu_struct(last, cur, itv);
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| 269 | }
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| 270 |
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| 271 | static void print_devstat_header(void)
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| 272 | {
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| 273 | printf("Device: tps");
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| 274 |
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| 275 | if (option_mask32 & OPT_m)
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| 276 | puts(" MB_read/s MB_wrtn/s MB_read MB_wrtn");
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| 277 | else if (option_mask32 & OPT_k)
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| 278 | puts(" kB_read/s kB_wrtn/s kB_read kB_wrtn");
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| 279 | else
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| 280 | puts(" Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn");
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| 281 | }
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| 282 |
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| 283 | /*
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| 284 | * Is input partition of format [sdaN]?
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| 285 | */
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| 286 | static int is_partition(const char *dev)
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| 287 | {
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| 288 | /* Ok, this is naive... */
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| 289 | return ((dev[0] - 's') | (dev[1] - 'd') | (dev[2] - 'a')) == 0 && isdigit(dev[3]);
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| 290 | }
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| 291 |
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| 292 | /*
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| 293 | * Return number of numbers on cmdline.
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| 294 | * Reasonable values are only 0 (no interval/count specified),
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| 295 | * 1 (interval specified) and 2 (both interval and count specified)
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| 296 | */
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| 297 | static int numbers_on_cmdline(int argc, char *argv[])
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| 298 | {
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| 299 | int sum = 0;
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| 300 |
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| 301 | if (isdigit(argv[argc-1][0]))
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| 302 | sum++;
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| 303 | if (argc > 2 && isdigit(argv[argc-2][0]))
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| 304 | sum++;
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| 305 |
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| 306 | return sum;
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| 307 | }
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| 308 |
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| 309 | static int is_dev_in_dlist(const char *dev)
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| 310 | {
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| 311 | int i;
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| 312 |
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| 313 | /* Go through the device list */
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| 314 | for (i = 0; i < G.devlist_i; i++)
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| 315 | if (strcmp(G.dlist[i].dname, dev) == 0)
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| 316 | /* Found a match */
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| 317 | return 1;
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| 318 |
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| 319 | /* No match found */
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| 320 | return 0;
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| 321 | }
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| 322 |
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| 323 | static void do_disk_statistics(cputime_t itv)
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| 324 | {
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| 325 | FILE *fp;
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| 326 | int rc;
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| 327 | int i = 0;
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| 328 | char buf[128];
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| 329 | unsigned major, minor;
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| 330 | unsigned long wr_ops, dummy; /* %*lu for suppress the conversion wouldn't work */
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| 331 | unsigned long long rd_sec_or_wr_ops;
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| 332 | unsigned long long rd_sec_or_dummy, wr_sec_or_dummy, wr_sec;
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| 333 | struct stats_dev sd;
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| 334 |
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| 335 | fp = xfopen_for_read("/proc/diskstats");
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| 336 |
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| 337 | /* Read and possibly print stats from /proc/diskstats */
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| 338 | while (fgets(buf, sizeof(buf), fp)) {
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| 339 | rc = sscanf(buf, "%u %u %s %lu %llu %llu %llu %lu %lu %llu %lu %lu %lu %lu",
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| 340 | &major, &minor, sd.dname, &sd.rd_ops,
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| 341 | &rd_sec_or_dummy, &rd_sec_or_wr_ops, &wr_sec_or_dummy,
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| 342 | &wr_ops, &dummy, &wr_sec, &dummy, &dummy, &dummy, &dummy);
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| 343 |
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| 344 | switch (rc) {
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| 345 | case 14:
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| 346 | sd.wr_ops = wr_ops;
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| 347 | sd.rd_sectors = rd_sec_or_wr_ops;
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| 348 | sd.wr_sectors = wr_sec;
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| 349 | break;
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| 350 | case 7:
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| 351 | sd.rd_sectors = rd_sec_or_dummy;
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| 352 | sd.wr_ops = (unsigned long)rd_sec_or_wr_ops;
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| 353 | sd.wr_sectors = wr_sec_or_dummy;
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| 354 | break;
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| 355 | default:
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| 356 | break;
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| 357 | }
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| 358 |
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| 359 | if (!G.devlist_i && !is_partition(sd.dname)) {
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| 360 | /* User didn't specify device */
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| 361 | if (!G.show_all && !sd.rd_ops && !sd.wr_ops) {
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| 362 | /* Don't print unused device */
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| 363 | continue;
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| 364 | }
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| 365 | print_stats_dev_struct(&G.saved_stats_dev[i], &sd, itv);
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| 366 | G.saved_stats_dev[i] = sd;
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| 367 | i++;
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| 368 | } else {
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| 369 | /* Is device in device list? */
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| 370 | if (is_dev_in_dlist(sd.dname)) {
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| 371 | /* Print current statistics */
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| 372 | print_stats_dev_struct(&G.saved_stats_dev[i], &sd, itv);
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| 373 | G.saved_stats_dev[i] = sd;
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| 374 | i++;
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| 375 | } else
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| 376 | continue;
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| 377 | }
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| 378 | }
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| 379 |
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| 380 | fclose(fp);
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| 381 | }
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| 382 |
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| 383 | static void dev_report(cputime_t itv)
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| 384 | {
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| 385 | /* Always print a header */
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| 386 | print_devstat_header();
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| 387 |
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| 388 | /* Fetch current disk statistics */
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| 389 | do_disk_statistics(itv);
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| 390 | }
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| 391 |
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| 392 | static void save_to_devlist(const char *dname)
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| 393 | {
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| 394 | int i;
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| 395 | struct device_list *tmp = G.dlist;
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| 396 |
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| 397 | if (strncmp(dname, "/dev/", 5) == 0)
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| 398 | /* We'll ignore prefix '/dev/' */
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| 399 | dname += 5;
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| 400 |
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| 401 | /* Go through the list */
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| 402 | for (i = 0; i < G.devlist_i; i++, tmp++)
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| 403 | if (strcmp(tmp->dname, dname) == 0)
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| 404 | /* Already in the list */
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| 405 | return;
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| 406 |
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| 407 | /* Add device name to the list */
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| 408 | strncpy(tmp->dname, dname, MAX_DEVICE_NAME - 1);
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| 409 |
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| 410 | /* Update device list index */
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| 411 | G.devlist_i++;
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| 412 | }
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| 413 |
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| 414 | static unsigned get_number_of_devices(void)
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| 415 | {
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| 416 | FILE *fp;
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| 417 | char buf[128];
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| 418 | int rv;
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| 419 | unsigned n = 0;
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| 420 | unsigned long rd_ops, wr_ops;
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| 421 | char dname[MAX_DEVICE_NAME];
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| 422 |
|
---|
| 423 | fp = xfopen_for_read("/proc/diskstats");
|
---|
| 424 |
|
---|
| 425 | while (fgets(buf, sizeof(buf), fp)) {
|
---|
| 426 | rv = sscanf(buf, "%*d %*d %s %lu %*u %*u %*u %lu",
|
---|
| 427 | dname, &rd_ops, &wr_ops);
|
---|
| 428 | if (rv == 2 || is_partition(dname))
|
---|
| 429 | /* A partition */
|
---|
| 430 | continue;
|
---|
| 431 | if (!rd_ops && !wr_ops) {
|
---|
| 432 | /* Unused device */
|
---|
| 433 | if (!G.show_all)
|
---|
| 434 | continue;
|
---|
| 435 | }
|
---|
| 436 | n++;
|
---|
| 437 | }
|
---|
| 438 |
|
---|
| 439 | fclose(fp);
|
---|
| 440 | return n;
|
---|
| 441 | }
|
---|
| 442 |
|
---|
| 443 | static int number_of_ALL_on_cmdline(char **argv)
|
---|
| 444 | {
|
---|
| 445 | int alls = 0;
|
---|
| 446 |
|
---|
| 447 | /* Iterate over cmd line arguments, count "ALL" */
|
---|
| 448 | while (*argv)
|
---|
| 449 | if (strcmp(*argv++, "ALL") == 0)
|
---|
| 450 | alls++;
|
---|
| 451 |
|
---|
| 452 | return alls;
|
---|
| 453 | }
|
---|
| 454 |
|
---|
| 455 | //usage:#define iostat_trivial_usage
|
---|
| 456 | //usage: "[-c] [-d] [-t] [-z] [-k|-m] [ALL|BLOCKDEV...] [INTERVAL [COUNT]]"
|
---|
| 457 | //usage:#define iostat_full_usage "\n\n"
|
---|
| 458 | //usage: "Report CPU and I/O statistics\n"
|
---|
| 459 | //usage: "\nOptions:"
|
---|
| 460 | //usage: "\n -c Show CPU utilization"
|
---|
| 461 | //usage: "\n -d Show device utilization"
|
---|
| 462 | //usage: "\n -t Print current time"
|
---|
| 463 | //usage: "\n -z Omit devices with no activity"
|
---|
| 464 | //usage: "\n -k Use kb/s"
|
---|
| 465 | //usage: "\n -m Use Mb/s"
|
---|
| 466 |
|
---|
| 467 | int iostat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 468 | int iostat_main(int argc, char **argv)
|
---|
| 469 | {
|
---|
| 470 | int opt, dev_num;
|
---|
| 471 | unsigned interval = 0;
|
---|
| 472 | int count;
|
---|
| 473 | cputime_t global_uptime[2] = { 0 };
|
---|
| 474 | cputime_t smp_uptime[2] = { 0 };
|
---|
| 475 | cputime_t itv;
|
---|
| 476 | struct stats_cpu stats_cur, stats_last;
|
---|
| 477 |
|
---|
| 478 | INIT_G();
|
---|
| 479 |
|
---|
| 480 | memset(&stats_last, 0, sizeof(stats_last));
|
---|
| 481 |
|
---|
| 482 | /* Get number of clock ticks per sec */
|
---|
| 483 | G.clk_tck = get_user_hz();
|
---|
| 484 |
|
---|
| 485 | /* Determine number of CPUs */
|
---|
| 486 | G.total_cpus = get_cpu_count();
|
---|
| 487 | if (G.total_cpus == 0)
|
---|
| 488 | G.total_cpus = 1;
|
---|
| 489 |
|
---|
| 490 | /* Parse and process arguments */
|
---|
| 491 | /* -k and -m are mutually exclusive */
|
---|
| 492 | opt_complementary = "k--m:m--k";
|
---|
| 493 | opt = getopt32(argv, "cdtzkm");
|
---|
| 494 | if (!(opt & (OPT_c + OPT_d)))
|
---|
| 495 | /* Default is -cd */
|
---|
| 496 | opt |= OPT_c + OPT_d;
|
---|
| 497 |
|
---|
| 498 | argv += optind;
|
---|
| 499 | argc -= optind;
|
---|
| 500 |
|
---|
| 501 | dev_num = argc - numbers_on_cmdline(argc, argv);
|
---|
| 502 | /* We don't want to allocate space for 'ALL' */
|
---|
| 503 | dev_num -= number_of_ALL_on_cmdline(argv);
|
---|
| 504 | if (dev_num > 0)
|
---|
| 505 | /* Make space for device list */
|
---|
| 506 | G.dlist = xzalloc(sizeof(G.dlist[0]) * dev_num);
|
---|
| 507 |
|
---|
| 508 | /* Store device names into device list */
|
---|
| 509 | while (*argv && !isdigit(*argv[0])) {
|
---|
| 510 | if (strcmp(*argv, "ALL") != 0)
|
---|
| 511 | /* If not ALL, save device name */
|
---|
| 512 | save_to_devlist(*argv);
|
---|
| 513 | else
|
---|
| 514 | G.show_all = 1;
|
---|
| 515 | argv++;
|
---|
| 516 | }
|
---|
| 517 |
|
---|
| 518 | count = 1;
|
---|
| 519 | if (*argv) {
|
---|
| 520 | /* Get interval */
|
---|
| 521 | interval = xatoi_positive(*argv);
|
---|
| 522 | count = (interval != 0 ? -1 : 1);
|
---|
| 523 | argv++;
|
---|
| 524 | if (*argv)
|
---|
| 525 | /* Get count value */
|
---|
| 526 | count = xatoi_positive(*argv);
|
---|
| 527 | }
|
---|
| 528 |
|
---|
| 529 | /* Allocate space for device stats */
|
---|
| 530 | if (opt & OPT_d) {
|
---|
| 531 | G.saved_stats_dev = xzalloc(sizeof(G.saved_stats_dev[0]) *
|
---|
| 532 | (dev_num ? dev_num : get_number_of_devices())
|
---|
| 533 | );
|
---|
| 534 | }
|
---|
| 535 |
|
---|
| 536 | /* Display header */
|
---|
| 537 | print_header();
|
---|
| 538 |
|
---|
| 539 | /* Main loop */
|
---|
| 540 | for (;;) {
|
---|
| 541 | /* Fill the time structure */
|
---|
| 542 | get_localtime(&G.tmtime);
|
---|
| 543 |
|
---|
| 544 | /* Fetch current CPU statistics */
|
---|
| 545 | get_cpu_statistics(&stats_cur);
|
---|
| 546 |
|
---|
| 547 | /* Fetch current uptime */
|
---|
| 548 | global_uptime[CURRENT] = get_uptime(&stats_cur);
|
---|
| 549 |
|
---|
| 550 | /* Get interval */
|
---|
| 551 | itv = get_interval(global_uptime[LAST], global_uptime[CURRENT]);
|
---|
| 552 |
|
---|
| 553 | if (opt & OPT_t)
|
---|
| 554 | print_timestamp();
|
---|
| 555 |
|
---|
| 556 | if (opt & OPT_c) {
|
---|
| 557 | cpu_report(&stats_last, &stats_cur, itv);
|
---|
| 558 | if (opt & OPT_d)
|
---|
| 559 | /* Separate outputs by a newline */
|
---|
| 560 | bb_putchar('\n');
|
---|
| 561 | }
|
---|
| 562 |
|
---|
| 563 | if (opt & OPT_d) {
|
---|
| 564 | if (this_is_smp()) {
|
---|
| 565 | smp_uptime[CURRENT] = get_smp_uptime();
|
---|
| 566 | itv = get_interval(smp_uptime[LAST], smp_uptime[CURRENT]);
|
---|
| 567 | smp_uptime[LAST] = smp_uptime[CURRENT];
|
---|
| 568 | }
|
---|
| 569 | dev_report(itv);
|
---|
| 570 | }
|
---|
| 571 |
|
---|
| 572 | if (count > 0) {
|
---|
| 573 | if (--count == 0)
|
---|
| 574 | break;
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | /* Backup current stats */
|
---|
| 578 | global_uptime[LAST] = global_uptime[CURRENT];
|
---|
| 579 | stats_last = stats_cur;
|
---|
| 580 |
|
---|
| 581 | bb_putchar('\n');
|
---|
| 582 | sleep(interval);
|
---|
| 583 | }
|
---|
| 584 |
|
---|
| 585 | bb_putchar('\n');
|
---|
| 586 |
|
---|
| 587 | if (ENABLE_FEATURE_CLEAN_UP) {
|
---|
| 588 | free(&G);
|
---|
| 589 | free(G.dlist);
|
---|
| 590 | free(G.saved_stats_dev);
|
---|
| 591 | }
|
---|
| 592 |
|
---|
| 593 | return EXIT_SUCCESS;
|
---|
| 594 | }
|
---|