sbin/hammer/cmd_stats.c

   1 /*
   2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sbin/hammer/cmd_stats.c,v 1.3 2008/07/14 20:28:07 dillon Exp $
  35  */
  36
  37 #include "hammer.h"
  38 #include <math.h>
  39 #include <sys/sysctl.h>
  40
  41 static void loaddelay(struct timespec *ts, const char *arg);
  42
  43 void
  44 hammer_cmd_bstats(char **av, int ac)
  45 {
  46         int mibs[8][16];
  47         size_t lens[8];
  48         int64_t stats[8];
  49         int64_t copy[8];
  50         size_t size;
  51         struct timespec delay = { 1, 0 };
  52         int count;
  53         int i;
  54         int r;
  55
  56         if (ac > 0)
  57                 loaddelay(&delay, av[0]);
  58         lens[0] = 16;
  59         lens[1] = 16;
  60         lens[2] = 16;
  61         lens[3] = 16;
  62         lens[4] = 16;
  63         lens[5] = 16;
  64         r = 0;
  65
  66         r |= sysctlnametomib("vfs.hammer.stats_btree_elements",
  67                              mibs[0], &lens[0]);
  68         r |= sysctlnametomib("vfs.hammer.stats_btree_iterations",
  69                              mibs[1], &lens[1]);
  70         r |= sysctlnametomib("vfs.hammer.stats_btree_lookups",
  71                              mibs[2], &lens[2]);
  72         r |= sysctlnametomib("vfs.hammer.stats_btree_inserts",
  73                              mibs[3], &lens[3]);
  74         r |= sysctlnametomib("vfs.hammer.stats_btree_deletes",
  75                              mibs[4], &lens[4]);
  76         r |= sysctlnametomib("vfs.hammer.stats_btree_splits",
  77                              mibs[5], &lens[5]);
  78         if (r < 0) {
  79                 perror("sysctl: HAMMER stats not available:");
  80                 exit(1);
  81         }
  82
  83         for (count = 0; ; ++count) {
  84                 for (i = 0; i < 6; ++i) {
  85                         size = sizeof(stats[0]);
  86                         r = sysctl(mibs[i], lens[i], &stats[i], &size, NULL, 0);
  87                         if (r < 0) {
  88                                 perror("sysctl");
  89                                 exit(1);
  90                         }
  91                 }
  92                 if (count) {
  93                         if ((count & 15) == 1)
  94                                 printf("  elements iterations    lookups    inserts    deletes     splits\n");
  95                         printf("%10jd %10jd %10jd %10jd %10jd %10jd\n",
  96                                 (intmax_t)(stats[0] - copy[0]),
  97                                 (intmax_t)(stats[1] - copy[1]),
  98                                 (intmax_t)(stats[2] - copy[2]),
  99                                 (intmax_t)(stats[3] - copy[3]),
 100                                 (intmax_t)(stats[4] - copy[4]),
 101                                 (intmax_t)(stats[5] - copy[5]));
 102                 }
 103                 nanosleep(&delay, NULL);
 104                 bcopy(stats, copy, sizeof(stats));
 105         }
 106 }
 107
 108
 109 void
 110 hammer_cmd_iostats(char **av, int ac)
 111 {
 112         int mibs[8][16];
 113         size_t lens[8];
 114         int64_t stats[8];
 115         int64_t copy[8];
 116         size_t size;
 117         struct timespec delay = { 1, 0 };
 118         int count;
 119         int i;
 120         int r;
 121
 122         if (ac > 0)
 123                 loaddelay(&delay, av[0]);
 124         lens[0] = 16;
 125         lens[1] = 16;
 126         lens[2] = 16;
 127         lens[3] = 16;
 128         lens[4] = 16;
 129         lens[5] = 16;
 130         lens[6] = 16;
 131         lens[7] = 16;
 132         r = 0;
 133
 134         r |= sysctlnametomib("vfs.hammer.stats_file_read",
 135                              mibs[0], &lens[0]);
 136         r |= sysctlnametomib("vfs.hammer.stats_file_write",
 137                              mibs[1], &lens[1]);
 138         r |= sysctlnametomib("vfs.hammer.stats_disk_read",
 139                              mibs[2], &lens[2]);
 140         r |= sysctlnametomib("vfs.hammer.stats_disk_write",
 141                              mibs[3], &lens[3]);
 142         r |= sysctlnametomib("vfs.hammer.stats_file_iopsr",
 143                              mibs[4], &lens[4]);
 144         r |= sysctlnametomib("vfs.hammer.stats_file_iopsw",
 145                              mibs[5], &lens[5]);
 146         r |= sysctlnametomib("vfs.hammer.stats_inode_flushes",
 147                              mibs[6], &lens[6]);
 148         r |= sysctlnametomib("vfs.hammer.stats_commits",
 149                              mibs[7], &lens[7]);
 150         if (r < 0) {
 151                 perror("sysctl: HAMMER stats not available");
 152                 exit(1);
 153         }
 154
 155         for (count = 0; ; ++count) {
 156                 for (i = 0; i <= 7; ++i) {
 157                         size = sizeof(stats[0]);
 158                         r = sysctl(mibs[i], lens[i], &stats[i], &size, NULL, 0);
 159                         if (r < 0) {
 160                                 perror("sysctl");
 161                                 exit(1);
 162                         }
 163                 }
 164                 if (count) {
 165                         if ((count & 15) == 1)
 166                                 printf("   file-rd   file-wr  dev-read dev-write inode_ops ino_flush  commits\n");
 167                         printf("%9jd %9jd %9jd %9jd %9jd %8jd %8jd\n",
 168                                 (intmax_t)(stats[0] - copy[0]),
 169                                 (intmax_t)(stats[1] - copy[1]),
 170                                 (intmax_t)(stats[2] - copy[2]),
 171                                 (intmax_t)(stats[3] - copy[3]),
 172                                 (intmax_t)(stats[4] + stats[5] -
 173                                            copy[4] - copy[5]),
 174                                 (intmax_t)(stats[6] - copy[6]),
 175                                 (intmax_t)(stats[7] - copy[7]));
 176                 }
 177                 nanosleep(&delay, NULL);
 178                 bcopy(stats, copy, sizeof(stats));
 179         }
 180 }
 181
 182 /*
 183  * Convert a delay string (e.g. "0.1") into a timespec.
 184  */
 185 static
 186 void
 187 loaddelay(struct timespec *ts, const char *arg)
 188 {
 189         double d;
 190
 191         d = strtod(arg, NULL);
 192         if (d < 0.001)
 193                 d = 0.001;
 194         ts->tv_sec = (int)d;
 195         ts->tv_nsec = (int)(modf(d, &d) * 1000000000.0);
 196 }
 197