usr.sbin/gstat/gstat.c

   1 /*-
   2  * Copyright (c) 2003 Poul-Henning Kamp
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The names of the authors may not be used to endorse or promote
  14  *    products derived from this software without specific prior written
  15  *    permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * $FreeBSD$
  30  */
  31
  32
  33 #include <stdio.h>
  34 #include <stdint.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <paths.h>
  38 #include <curses.h>
  39 #include <unistd.h>
  40 #include <fcntl.h>
  41 #include <errno.h>
  42 #include <err.h>
  43 #include <sys/mman.h>
  44 #include <sys/time.h>
  45 #include <libgeom.h>
  46 #include <sys/resource.h>
  47 #include <devstat.h>
  48 #include <sys/devicestat.h>
  49
  50 static int flag_a, flag_c, flag_d;
  51 static int flag_I = 500000;
  52
  53 static void usage(void);
  54
  55 int
  56 main(int argc, char **argv)
  57 {
  58         int error, i, quit;
  59         struct devstat *gsp, *gsq;
  60         void *sp, *sq;
  61         double dt;
  62         struct timespec tp, tq;
  63         struct gmesh gmp;
  64         struct gprovider *pp;
  65         struct gconsumer *cp;
  66         struct gident *gid;
  67         short cf, cb;
  68         char *p;
  69         long double ld[11];
  70         uint64_t u64;
  71
  72         while ((i = getopt(argc, argv, "adcI:")) != -1) {
  73                 switch (i) {
  74                 case 'a':
  75                         flag_a = 1;
  76                         break;
  77                 case 'c':
  78                         flag_c = 1;
  79                         break;
  80                 case 'd':
  81                         flag_d = 1;
  82                         break;
  83                 case 'I':
  84                         p = NULL;
  85                         i = strtoul(optarg, &p, 0);
  86                         if (p == optarg || errno == EINVAL ||
  87                             errno == ERANGE) {
  88                                 errx(1, "Invalid argument to -I");
  89                         } else if (!strcmp(p, "s"))
  90                                 i *= 1000000;
  91                         else if (!strcmp(p, "ms"))
  92                                 i *= 1000;
  93                         else if (!strcmp(p, "us"))
  94                                 i *= 1;
  95                         flag_I = i;
  96                         break;
  97                 case '?':
  98                 default:
  99                         usage();
 100                 }
 101         }
 102         argc -= optind;
 103         argv += optind;
 104         if (argc != 0)
 105                 usage();
 106
 107         i = geom_gettree(&gmp);
 108         if (i != 0)
 109                 err(1, "geom_gettree = %d", i);
 110         error = geom_stats_open();
 111         if (error)
 112                 err(1, "geom_stats_open()");
 113         sq = NULL;
 114         sq = geom_stats_snapshot_get();
 115         if (sq == NULL)
 116                 err(1, "geom_stats_snapshot()");
 117         initscr();
 118         start_color();
 119         use_default_colors();
 120         pair_content(0, &cf, &cb);
 121         init_pair(1, COLOR_GREEN, cb);
 122         init_pair(2, COLOR_MAGENTA, cb);
 123         init_pair(3, COLOR_RED, cb);
 124         cbreak();
 125         noecho();
 126         nonl();
 127         nodelay(stdscr, 1);
 128         intrflush(stdscr, FALSE);
 129         keypad(stdscr, TRUE);
 130         geom_stats_snapshot_timestamp(sq, &tq);
 131         for (quit = 0; !quit;) {
 132                 sp = geom_stats_snapshot_get();
 133                 if (sp == NULL)
 134                         err(1, "geom_stats_snapshot()");
 135                 geom_stats_snapshot_timestamp(sp, &tp);
 136                 dt = tp.tv_sec - tq.tv_sec;
 137                 dt += (tp.tv_nsec - tq.tv_nsec) * 1e-9;
 138                 tq = tp;
 139
 140                 geom_stats_snapshot_reset(sp);
 141                 geom_stats_snapshot_reset(sq);
 142                 move(0,0);
 143                 printw("dT: %5.3f  flag_I %dus  sizeof %d  i %d\n",
 144                     dt, flag_I, sizeof(*gsp), i);
 145                 printw(" L(q)  ops/s   ");
 146                 printw(" r/s   kBps   ms/r   ");
 147                 printw(" w/s   kBps   ms/w   ");
 148                 if (flag_d)
 149                         printw(" d/s   kBps   ms/d   ");
 150                 printw("%%busy Name\n");
 151                 for (;;) {
 152                         gsp = geom_stats_snapshot_next(sp);
 153                         gsq = geom_stats_snapshot_next(sq);
 154                         if (gsp == NULL || gsq == NULL)
 155                                 break;
 156                         if (gsp->id == NULL)
 157                                 continue;
 158                         gid = geom_lookupid(&gmp, gsp->id);
 159                         if (gid == NULL) {
 160                                 geom_deletetree(&gmp);
 161                                 i = geom_gettree(&gmp);
 162                                 if (i != 0)
 163                                         err(1, "geom_gettree = %d", i);
 164                                 gid = geom_lookupid(&gmp, gsp->id);
 165                         }
 166                         if (gid == NULL)
 167                                 continue;
 168                         if (gid != NULL && gid->lg_what == ISCONSUMER &&
 169                             !flag_c)
 170                                 continue;
 171                         if (gsp->sequence0 != gsp->sequence1) {
 172                                 printw("*\n");
 173                                 continue;
 174                         }
 175                         devstat_compute_statistics(gsp, gsq, dt,
 176                             DSM_QUEUE_LENGTH, &u64,
 177                             DSM_TRANSFERS_PER_SECOND, &ld[0],
 178
 179                             DSM_TRANSFERS_PER_SECOND_READ, &ld[1],
 180                             DSM_MB_PER_SECOND_READ, &ld[2],
 181                             DSM_MS_PER_TRANSACTION_READ, &ld[3],
 182
 183                             DSM_TRANSFERS_PER_SECOND_WRITE, &ld[4],
 184                             DSM_MB_PER_SECOND_WRITE, &ld[5],
 185                             DSM_MS_PER_TRANSACTION_WRITE, &ld[6],
 186
 187                             DSM_BUSY_PCT, &ld[7],
 188                             DSM_TRANSFERS_PER_SECOND_FREE, &ld[8],
 189                             DSM_MB_PER_SECOND_FREE, &ld[9],
 190                             DSM_MS_PER_TRANSACTION_FREE, &ld[10],
 191                             DSM_NONE);
 192
 193                         if (flag_a && ld[7] < 0.1) {
 194                                 *gsq = *gsp;
 195                                 continue;
 196                         }
 197
 198                         printw(" %4ju", (uintmax_t)u64);
 199                         printw(" %6.0f", (double)ld[0]);
 200                         printw(" %6.0f", (double)ld[1]);
 201                         printw(" %6.0f", (double)ld[2] * 1024);
 202                         printw(" %6.1f", (double)ld[3]);
 203                         printw(" %6.0f", (double)ld[4]);
 204                         printw(" %6.0f", (double)ld[5] * 1024);
 205                         printw(" %6.1f", (double)ld[6]);
 206
 207                         if (flag_d) {
 208                                 printw(" %6.0f", (double)ld[8]);
 209                                 printw(" %6.0f", (double)ld[9] * 1024);
 210                                 printw(" %6.1f", (double)ld[10]);
 211                         }
 212
 213                         if (ld[7] > 80)
 214                                 i = 3;
 215                         else if (ld[7] > 50)
 216                                 i = 2;
 217                         else
 218                                 i = 1;
 219                         attron(COLOR_PAIR(i));
 220                         printw(" %6.1lf", (double)ld[7]);
 221                         attroff(COLOR_PAIR(i));
 222                         printw("|");
 223                         if (gid == NULL) {
 224                                 printw(" ??");
 225                         } else if (gid->lg_what == ISPROVIDER) {
 226                                 pp = gid->lg_ptr;
 227                                 printw(" %s", pp->lg_name);
 228                         } else if (gid->lg_what == ISCONSUMER) {
 229                                 cp = gid->lg_ptr;
 230                                 printw(" %s/%s/%s",
 231                                     cp->lg_geom->lg_class->lg_name,
 232                                     cp->lg_geom->lg_name,
 233                                     cp->lg_provider->lg_name);
 234                         }
 235                         clrtoeol();
 236                         printw("\n");
 237                         *gsq = *gsp;
 238                 }
 239                 geom_stats_snapshot_free(sp);
 240                 clrtobot();
 241                 refresh();
 242                 usleep(flag_I);
 243                 i = getch();
 244                 switch (i) {
 245                 case '>':
 246                         flag_I *= 2;
 247                         break;
 248                 case '<':
 249                         flag_I /= 2;
 250                         if (flag_I < 1000)
 251                                 flag_I = 1000;
 252                         break;
 253                 case 'c':
 254                         flag_c = !flag_c;
 255                         break;
 256                 case 'q':
 257                         quit = 1;
 258                         break;
 259                 default:
 260                         break;
 261                 }
 262         }
 263
 264         endwin();
 265         exit (0);
 266 }
 267
 268 static void
 269 usage(void)
 270 {
 271         fprintf(stderr, "usage: gstat [-acd] [-I interval]\n");
 272         exit(1);
 273         /* NOTREACHED */
 274 }