source3/utils/status_profile.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  * status reporting
   4  * Copyright (C) Andrew Tridgell 1994-1998
   5  * Copyright (C) James Peach 2005-2006
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "includes.h"
  22 #include "smbprofile.h"
  23 #include "status_profile.h"
  24
  25 static void profile_separator(const char * title)
  26 {
  27     char line[79 + 1];
  28     char * end;
  29
  30     snprintf(line, sizeof(line), "**** %s ", title);
  31
  32     for (end = line + strlen(line); end < &line[sizeof(line) -1]; ++end) {
  33             *end = '*';
  34     }
  35
  36     line[sizeof(line) - 1] = '\0';
  37     d_printf("%s\n", line);
  38 }
  39
  40 /*******************************************************************
  41  dump the elements of the profile structure
  42   ******************************************************************/
  43 bool status_profile_dump(bool verbose)
  44 {
  45         struct profile_stats stats = {};
  46
  47         if (!profile_setup(NULL, True)) {
  48                 fprintf(stderr,"Failed to initialise profile memory\n");
  49                 return False;
  50         }
  51
  52         smbprofile_collect(&stats);
  53
  54 #define __PRINT_FIELD_LINE(name, _stats, field) do { \
  55         d_printf("%-59s%20ju\n", \
  56                  name "_" #field ":", \
  57                  (uintmax_t)stats.values._stats.field); \
  58 } while(0);
  59 #define SMBPROFILE_STATS_START
  60 #define SMBPROFILE_STATS_SECTION_START(name, display) profile_separator(#display);
  61 #define SMBPROFILE_STATS_COUNT(name) do { \
  62         __PRINT_FIELD_LINE(#name, name##_stats,  count); \
  63 } while(0);
  64 #define SMBPROFILE_STATS_TIME(name) do { \
  65         __PRINT_FIELD_LINE(#name, name##_stats,  time); \
  66 } while(0);
  67 #define SMBPROFILE_STATS_BASIC(name) do { \
  68         __PRINT_FIELD_LINE(#name, name##_stats,  count); \
  69         __PRINT_FIELD_LINE(#name, name##_stats,  time); \
  70 } while(0);
  71 #define SMBPROFILE_STATS_BYTES(name) do { \
  72         __PRINT_FIELD_LINE(#name, name##_stats,  count); \
  73         __PRINT_FIELD_LINE(#name, name##_stats,  time); \
  74         __PRINT_FIELD_LINE(#name, name##_stats,  idle); \
  75         __PRINT_FIELD_LINE(#name, name##_stats,  bytes); \
  76 } while(0);
  77 #define SMBPROFILE_STATS_IOBYTES(name) do { \
  78         __PRINT_FIELD_LINE(#name, name##_stats,  count); \
  79         __PRINT_FIELD_LINE(#name, name##_stats,  time); \
  80         __PRINT_FIELD_LINE(#name, name##_stats,  idle); \
  81         __PRINT_FIELD_LINE(#name, name##_stats,  inbytes); \
  82         __PRINT_FIELD_LINE(#name, name##_stats,  outbytes); \
  83 } while(0);
  84 #define SMBPROFILE_STATS_SECTION_END
  85 #define SMBPROFILE_STATS_END
  86         SMBPROFILE_STATS_ALL_SECTIONS
  87 #undef __PRINT_FIELD_LINE
  88 #undef SMBPROFILE_STATS_START
  89 #undef SMBPROFILE_STATS_SECTION_START
  90 #undef SMBPROFILE_STATS_COUNT
  91 #undef SMBPROFILE_STATS_TIME
  92 #undef SMBPROFILE_STATS_BASIC
  93 #undef SMBPROFILE_STATS_BYTES
  94 #undef SMBPROFILE_STATS_IOBYTES
  95 #undef SMBPROFILE_STATS_SECTION_END
  96 #undef SMBPROFILE_STATS_END
  97
  98         return True;
  99 }
 100
 101 /* Convert microseconds to milliseconds. */
 102 #define usec_to_msec(s) ((s) / 1000)
 103 /* Convert microseconds to seconds. */
 104 #define usec_to_sec(s) ((s) / 1000000)
 105 /* One second in microseconds. */
 106 #define one_second_usec (1000000)
 107
 108 #define sample_interval_usec one_second_usec
 109
 110 #define percent_time(used, period) ((double)(used) / (double)(period) * 100.0 )
 111
 112 static uint64_t print_count_count_samples(
 113         char *buf, const size_t buflen,
 114         const char *name,
 115         const struct smbprofile_stats_count * const current,
 116         const struct smbprofile_stats_count * const last,
 117         uint64_t delta_usec)
 118 {
 119         uint64_t step = current->count - last->count;
 120         uint64_t count = 0;
 121
 122         if (step != 0) {
 123                 uint64_t delta_sec = usec_to_sec(delta_usec);
 124
 125                 count++;
 126
 127                 if (buf[0] == '\0') {
 128                         snprintf(buf, buflen,
 129                                 "%-40s %ju/sec",
 130                                 name, (uintmax_t)(step / delta_sec));
 131                 } else {
 132                         printf("%-40s %s %ju/sec\n",
 133                                 buf, name, (uintmax_t)(step / delta_sec));
 134                         buf[0] = '\0';
 135                 }
 136         }
 137
 138         return count;
 139 }
 140
 141 static uint64_t print_basic_count_samples(
 142         char *buf, const size_t buflen,
 143         const char *name,
 144         const struct smbprofile_stats_basic * const current,
 145         const struct smbprofile_stats_basic * const last,
 146         uint64_t delta_usec)
 147 {
 148         uint64_t step = current->count - last->count;
 149         uint64_t spent = current->time - last->time;
 150         uint64_t count = 0;
 151
 152         if (step != 0) {
 153                 uint64_t delta_sec = usec_to_sec(delta_usec);
 154
 155                 count++;
 156
 157                 if (buf[0] == '\0') {
 158                         snprintf(buf, buflen,
 159                                 "%s %ju/sec (%.2f%%)",
 160                                 name, (uintmax_t)(step / delta_sec),
 161                                 percent_time(spent, delta_usec));
 162                 } else {
 163                         printf("%-40s %s %ju/sec (%.2f%%)\n",
 164                                 buf, name, (uintmax_t)(step / delta_sec),
 165                                 percent_time(spent, delta_usec));
 166                         buf[0] = '\0';
 167                 }
 168         }
 169
 170         return count;
 171 }
 172
 173 static uint64_t print_bytes_count_samples(
 174         char *buf, const size_t buflen,
 175         const char *name,
 176         const struct smbprofile_stats_bytes * const current,
 177         const struct smbprofile_stats_bytes * const last,
 178         uint64_t delta_usec)
 179 {
 180         uint64_t step = current->count - last->count;
 181         uint64_t spent = current->time - last->time;
 182         uint64_t count = 0;
 183
 184         if (step != 0) {
 185                 uint64_t delta_sec = usec_to_sec(delta_usec);
 186
 187                 count++;
 188
 189                 if (buf[0] == '\0') {
 190                         snprintf(buf, buflen,
 191                                 "%s %ju/sec (%.2f%%)",
 192                                 name, (uintmax_t)(step / delta_sec),
 193                                 percent_time(spent, delta_usec));
 194                 } else {
 195                         printf("%-40s %s %ju/sec (%.2f%%)\n",
 196                                 buf, name, (uintmax_t)(step / delta_sec),
 197                                 percent_time(spent, delta_usec));
 198                         buf[0] = '\0';
 199                 }
 200         }
 201
 202         return count;
 203 }
 204
 205 static uint64_t print_iobytes_count_samples(
 206         char *buf, const size_t buflen,
 207         const char *name,
 208         const struct smbprofile_stats_iobytes * const current,
 209         const struct smbprofile_stats_iobytes * const last,
 210         uint64_t delta_usec)
 211 {
 212         uint64_t step = current->count - last->count;
 213         uint64_t spent = current->time - last->time;
 214         uint64_t count = 0;
 215
 216         if (step != 0) {
 217                 uint64_t delta_sec = usec_to_sec(delta_usec);
 218
 219                 count++;
 220
 221                 if (buf[0] == '\0') {
 222                         snprintf(buf, buflen,
 223                                 "%s %ju/sec (%.2f%%)",
 224                                 name, (uintmax_t)(step / delta_sec),
 225                                 percent_time(spent, delta_usec));
 226                 } else {
 227                         printf("%-40s %s %ju/sec (%.2f%%)\n",
 228                                 buf, name, (uintmax_t)(step / delta_sec),
 229                                 percent_time(spent, delta_usec));
 230                         buf[0] = '\0';
 231                 }
 232         }
 233
 234         return count;
 235 }
 236
 237 static uint64_t print_count_samples(
 238         const struct profile_stats * const current,
 239         const struct profile_stats * const last,
 240         uint64_t delta_usec)
 241 {
 242         uint64_t count = 0;
 243         char buf[60] = { '\0', };
 244
 245         if (delta_usec == 0) {
 246                 return 0;
 247         }
 248
 249 #define SMBPROFILE_STATS_START
 250 #define SMBPROFILE_STATS_SECTION_START(name, display)
 251 #define SMBPROFILE_STATS_COUNT(name) do { \
 252         count += print_count_count_samples(buf, sizeof(buf), \
 253                                            #name, \
 254                                            &current->values.name##_stats, \
 255                                            &last->values.name##_stats, \
 256                                            delta_usec); \
 257 } while(0);
 258 #define SMBPROFILE_STATS_TIME(name) do { \
 259 } while(0);
 260 #define SMBPROFILE_STATS_BASIC(name) do { \
 261         count += print_basic_count_samples(buf, sizeof(buf), \
 262                                            #name, \
 263                                            &current->values.name##_stats, \
 264                                            &last->values.name##_stats, \
 265                                            delta_usec); \
 266 } while(0);
 267 #define SMBPROFILE_STATS_BYTES(name) do { \
 268         count += print_bytes_count_samples(buf, sizeof(buf), \
 269                                            #name, \
 270                                            &current->values.name##_stats, \
 271                                            &last->values.name##_stats, \
 272                                            delta_usec); \
 273 } while(0);
 274 #define SMBPROFILE_STATS_IOBYTES(name) do { \
 275         count += print_iobytes_count_samples(buf, sizeof(buf), \
 276                                              #name, \
 277                                              &current->values.name##_stats, \
 278                                              &last->values.name##_stats, \
 279                                              delta_usec); \
 280 } while(0);
 281 #define SMBPROFILE_STATS_SECTION_END
 282 #define SMBPROFILE_STATS_END
 283         SMBPROFILE_STATS_ALL_SECTIONS
 284 #undef SMBPROFILE_STATS_START
 285 #undef SMBPROFILE_STATS_SECTION_START
 286 #undef SMBPROFILE_STATS_COUNT
 287 #undef SMBPROFILE_STATS_TIME
 288 #undef SMBPROFILE_STATS_BASIC
 289 #undef SMBPROFILE_STATS_BYTES
 290 #undef SMBPROFILE_STATS_IOBYTES
 291 #undef SMBPROFILE_STATS_SECTION_END
 292 #undef SMBPROFILE_STATS_END
 293
 294         if (buf[0] != '\0') {
 295                 printf("%-40s\n", buf);
 296                 buf[0] = '\0';
 297         }
 298
 299         return count;
 300 }
 301
 302 static struct profile_stats     sample_data[2];
 303 static uint64_t         sample_time[2];
 304
 305 bool status_profile_rates(bool verbose)
 306 {
 307         uint64_t remain_usec;
 308         uint64_t next_usec;
 309         uint64_t delta_usec;
 310
 311         int last = 0;
 312         int current = 1;
 313         int tmp;
 314
 315         if (verbose) {
 316             fprintf(stderr, "Sampling stats at %d sec intervals\n",
 317                     usec_to_sec(sample_interval_usec));
 318         }
 319
 320         if (!profile_setup(NULL, True)) {
 321                 fprintf(stderr,"Failed to initialise profile memory\n");
 322                 return False;
 323         }
 324
 325         smbprofile_collect(&sample_data[last]);
 326         for (;;) {
 327                 sample_time[current] = profile_timestamp();
 328                 next_usec = sample_time[current] + sample_interval_usec;
 329
 330                 /* Take a sample. */
 331                 smbprofile_collect(&sample_data[current]);
 332
 333                 /* Rate convert some values and print results. */
 334                 delta_usec = sample_time[current] - sample_time[last];
 335
 336                 if (print_count_samples(&sample_data[current],
 337                         &sample_data[last], delta_usec)) {
 338                         printf("\n");
 339                 }
 340
 341                 /* Swap sampling buffers. */
 342                 tmp = last;
 343                 last = current;
 344                 current = tmp;
 345
 346                 /* Delay until next sample time. */
 347                 remain_usec = next_usec - profile_timestamp();
 348                 if (remain_usec > sample_interval_usec) {
 349                         fprintf(stderr, "eek! falling behind sampling rate!\n");
 350                 } else {
 351                         if (verbose) {
 352                             fprintf(stderr,
 353                                     "delaying for %lu msec\n",
 354                                     (unsigned long )usec_to_msec(remain_usec));
 355                         }
 356
 357                         usleep(remain_usec);
 358                 }
 359
 360         }
 361
 362         return True;
 363 }