git.m6w6.name Git - m6w6/libmemcached/blob - src/memslap.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <sys/types.h>
   7 #include <sys/mman.h>
   8 #include <fcntl.h>
   9 #include <assert.h>
  10 #include <sys/time.h>
  11 #include <getopt.h>
  12 #include <pthread.h>
  13
  14 #include <memcached.h>
  15
  16 #include "client_options.h"
  17 #include "utilities.h"
  18 #include "generator.h"
  19 #include "execute.h"
  20
  21 #define DEFAULT_INITIAL_LOAD 10000
  22 #define DEFAULT_EXECUTE_NUMBER 10000
  23 #define DEFAULT_CONCURRENCY 1
  24
  25 #define PROGRAM_NAME "memslap"
  26 #define PROGRAM_DESCRIPTION "Generates a load against a memcached custer of servers."
  27
  28 /* Global Thread counter */
  29 unsigned int thread_counter;
  30 pthread_mutex_t counter_mutex;
  31 pthread_cond_t count_threshhold;
  32 unsigned int master_wakeup;
  33 pthread_mutex_t sleeper_mutex;
  34 pthread_cond_t sleep_threshhold;
  35
  36 void *run_task(void *p);
  37
  38 /* Types */
  39 typedef struct conclusions_st conclusions_st;
  40 typedef struct thread_context_st thread_context_st;
  41 typedef enum {
  42   SET_TEST,
  43   GET_TEST,
  44 } test_type;
  45
  46 struct thread_context_st {
  47   unsigned int key_count;
  48   pairs_st *initial_pairs;
  49   unsigned int initial_number;
  50   pairs_st *execute_pairs;
  51   unsigned int execute_number;
  52   test_type test;
  53   memcached_st *memc;
  54 };
  55
  56 struct conclusions_st {
  57   long int load_time;
  58   long int read_time;
  59   unsigned int rows_loaded;
  60   unsigned int rows_read;
  61 };
  62
  63 /* Prototypes */
  64 void options_parse(int argc, char *argv[]);
  65 void conclusions_print(conclusions_st *conclusion);
  66 void scheduler(memcached_server_st *servers, conclusions_st *conclusion);
  67 pairs_st *load_create_data(memcached_st *memc, unsigned int number_of,
  68                            unsigned int *actual_loaded);
  69 void flush_all(memcached_st *memc);
  70
  71 static int opt_verbose= 0;
  72 static int opt_flush= 0;
  73 static int opt_non_blocking_io= 0;
  74 static int opt_tcp_nodelay= 0;
  75 static unsigned int opt_execute_number= 0;
  76 static unsigned int opt_createial_load= 0;
  77 static unsigned int opt_concurrency= 0;
  78 static int opt_displayflag= 0;
  79 static char *opt_servers= NULL;
  80 test_type opt_test= SET_TEST;
  81
  82 int main(int argc, char *argv[])
  83 {
  84   conclusions_st conclusion;
  85   memcached_server_st *servers;
  86
  87   memset(&conclusion, 0, sizeof(conclusions_st));
  88
  89   srandom(time(NULL));
  90   options_parse(argc, argv);
  91
  92   if (!opt_servers)
  93   {
  94     char *temp;
  95
  96     if ((temp= getenv("MEMCACHED_SERVERS")))
  97       opt_servers= strdup(temp);
  98     else
  99       exit(1);
 100   }
 101
 102   servers= memcached_servers_parse(opt_servers);
 103
 104   pthread_mutex_init(&counter_mutex, NULL);
 105   pthread_cond_init(&count_threshhold, NULL);
 106   pthread_mutex_init(&sleeper_mutex, NULL);
 107   pthread_cond_init(&sleep_threshhold, NULL);
 108
 109   scheduler(servers, &conclusion);
 110
 111   free(opt_servers);
 112
 113   (void)pthread_mutex_destroy(&counter_mutex);
 114   (void)pthread_cond_destroy(&count_threshhold);
 115   (void)pthread_mutex_destroy(&sleeper_mutex);
 116   (void)pthread_cond_destroy(&sleep_threshhold);
 117   conclusions_print(&conclusion);
 118   memcached_server_list_free(servers);
 119
 120   return 0;
 121 }
 122
 123 void scheduler(memcached_server_st *servers, conclusions_st *conclusion)
 124 {
 125   unsigned int x;
 126   unsigned int actual_loaded= 0; /* Fix warning */
 127   memcached_st *memc;
 128
 129   struct timeval start_time, end_time;
 130   pthread_t mainthread;            /* Thread descriptor */
 131   pthread_attr_t attr;          /* Thread attributes */
 132   pairs_st *pairs= NULL;
 133
 134   pthread_attr_init(&attr);
 135   pthread_attr_setdetachstate(&attr,
 136                               PTHREAD_CREATE_DETACHED);
 137
 138   memc= memcached_create(NULL);
 139   memcached_server_push(memc, servers);
 140
 141   if (opt_flush)
 142     flush_all(memc);
 143   if (opt_createial_load)
 144     pairs= load_create_data(memc, opt_createial_load, &actual_loaded);
 145
 146   /* We set this after we have loaded */
 147   {
 148     unsigned int value= 1;
 149     if (opt_non_blocking_io)
 150       memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_NO_BLOCK, &value);
 151     if (opt_tcp_nodelay)
 152       memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_TCP_NODELAY, &value);
 153   }
 154
 155
 156   pthread_mutex_lock(&counter_mutex);
 157   thread_counter= 0;
 158
 159   pthread_mutex_lock(&sleeper_mutex);
 160   master_wakeup= 1;
 161   pthread_mutex_unlock(&sleeper_mutex);
 162
 163   for (x= 0; x < opt_concurrency; x++)
 164   {
 165     thread_context_st *context;
 166     context= (thread_context_st *)malloc(sizeof(thread_context_st));
 167     memset(context, 0, sizeof(thread_context_st));
 168
 169     context->memc= memcached_clone(NULL, memc);
 170     context->test= opt_test;
 171
 172     context->initial_pairs= pairs;
 173     context->initial_number= actual_loaded;
 174
 175     if (opt_test == SET_TEST)
 176     {
 177       context->execute_pairs= pairs_generate(opt_execute_number);
 178       context->execute_number= opt_execute_number;
 179     }
 180
 181     /* now you create the thread */
 182     if (pthread_create(&mainthread, &attr, run_task,
 183                        (void *)context) != 0)
 184     {
 185       fprintf(stderr,"Could not create thread\n");
 186       exit(1);
 187     }
 188     thread_counter++;
 189   }
 190
 191   pthread_mutex_unlock(&counter_mutex);
 192   pthread_attr_destroy(&attr);
 193
 194   pthread_mutex_lock(&sleeper_mutex);
 195   master_wakeup= 0;
 196   pthread_mutex_unlock(&sleeper_mutex);
 197   pthread_cond_broadcast(&sleep_threshhold);
 198
 199   gettimeofday(&start_time, NULL);
 200   /*
 201     We loop until we know that all children have cleaned up.
 202   */
 203   pthread_mutex_lock(&counter_mutex);
 204   while (thread_counter)
 205   {
 206     struct timespec abstime;
 207
 208     memset(&abstime, 0, sizeof(struct timespec));
 209     abstime.tv_sec= 1;
 210
 211     pthread_cond_timedwait(&count_threshhold, &counter_mutex, &abstime);
 212   }
 213   pthread_mutex_unlock(&counter_mutex);
 214
 215   gettimeofday(&end_time, NULL);
 216
 217   conclusion->load_time= timedif(end_time, start_time);
 218   conclusion->read_time= timedif(end_time, start_time);
 219   pairs_free(pairs);
 220 }
 221
 222 void options_parse(int argc, char *argv[])
 223 {
 224   memcached_programs_help_st help_options[]=
 225   {
 226     {0},
 227   };
 228
 229   static struct option long_options[]=
 230     {
 231       {"concurrency", required_argument, NULL, OPT_SLAP_CONCURRENCY},
 232       {"debug", no_argument, &opt_verbose, OPT_DEBUG},
 233       {"execute-number", required_argument, NULL, OPT_SLAP_EXECUTE_NUMBER},
 234       {"flag", no_argument, &opt_displayflag, OPT_FLAG},
 235       {"flush", no_argument, &opt_flush, OPT_FLUSH},
 236       {"help", no_argument, NULL, OPT_HELP},
 237       {"initial-load", required_argument, NULL, OPT_SLAP_INITIAL_LOAD}, /* Number to load initially */
 238       {"non-blocking", no_argument, &opt_non_blocking_io, OPT_SLAP_NON_BLOCK},
 239       {"servers", required_argument, NULL, OPT_SERVERS},
 240       {"tcp-nodelay", no_argument, &opt_tcp_nodelay, OPT_SLAP_TCP_NODELAY},
 241       {"test", required_argument, NULL, OPT_SLAP_TEST},
 242       {"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 243       {"version", no_argument, NULL, OPT_VERSION},
 244       {0, 0, 0, 0},
 245     };
 246
 247   int option_index= 0;
 248   int option_rv;
 249
 250   while (1)
 251   {
 252     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 253     if (option_rv == -1) break;
 254     switch (option_rv)
 255     {
 256     case 0:
 257       break;
 258     case OPT_VERBOSE: /* --verbose or -v */
 259       opt_verbose = OPT_VERBOSE;
 260       break;
 261     case OPT_DEBUG: /* --debug or -d */
 262       opt_verbose = OPT_DEBUG;
 263       break;
 264     case OPT_VERSION: /* --version or -V */
 265       version_command(PROGRAM_NAME);
 266       break;
 267     case OPT_HELP: /* --help or -h */
 268       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 269       break;
 270     case OPT_SERVERS: /* --servers or -s */
 271       opt_servers= strdup(optarg);
 272       break;
 273     case OPT_SLAP_TEST:
 274       if (!strcmp(optarg, "get"))
 275         opt_test= GET_TEST ;
 276       else if (!strcmp(optarg, "set"))
 277         opt_test= SET_TEST;
 278       else
 279       {
 280         fprintf(stderr, "Your test, %s, is not a known test\n", optarg);
 281         exit(1);
 282       }
 283       break;
 284     case OPT_SLAP_CONCURRENCY:
 285       opt_concurrency= strtol(optarg, (char **)NULL, 10);
 286     case OPT_SLAP_EXECUTE_NUMBER:
 287       opt_execute_number= strtol(optarg, (char **)NULL, 10);
 288       break;
 289     case OPT_SLAP_INITIAL_LOAD:
 290       opt_createial_load= strtol(optarg, (char **)NULL, 10);
 291       break;
 292     case '?':
 293       /* getopt_long already printed an error message. */
 294       exit(1);
 295     default:
 296       abort();
 297     }
 298   }
 299
 300   if (opt_test == GET_TEST && opt_createial_load == 0)
 301     opt_createial_load= DEFAULT_INITIAL_LOAD;
 302
 303   if (opt_execute_number == 0)
 304     opt_execute_number= DEFAULT_EXECUTE_NUMBER;
 305
 306   if (opt_concurrency == 0)
 307     opt_concurrency= DEFAULT_CONCURRENCY;
 308 }
 309
 310 void conclusions_print(conclusions_st *conclusion)
 311 {
 312   printf("\tThreads connecting to servers %u\n", opt_concurrency);
 313 #ifdef NOT_FINISHED
 314   printf("\tLoaded %u rows\n", conclusion->rows_loaded);
 315   printf("\tRead %u rows\n", conclusion->rows_read);
 316 #endif
 317   if (opt_test == SET_TEST)
 318     printf("\tTook %ld.%03ld seconds to load data\n", conclusion->load_time / 1000,
 319            conclusion->load_time % 1000);
 320   else
 321     printf("\tTook %ld.%03ld seconds to read data\n", conclusion->read_time / 1000,
 322            conclusion->read_time % 1000);
 323 }
 324
 325 void *run_task(void *p)
 326 {
 327   thread_context_st *context= (thread_context_st *)p;
 328   memcached_st *memc;
 329
 330   memc= context->memc;
 331
 332   pthread_mutex_lock(&sleeper_mutex);
 333   while (master_wakeup)
 334   {
 335     pthread_cond_wait(&sleep_threshhold, &sleeper_mutex);
 336   }
 337   pthread_mutex_unlock(&sleeper_mutex);
 338
 339   /* Do Stuff */
 340   switch (context->test)
 341   {
 342   case SET_TEST:
 343     execute_set(memc, context->execute_pairs, context->execute_number);
 344     break;
 345   case GET_TEST:
 346     execute_get(memc, context->initial_pairs, context->initial_number);
 347     break;
 348   }
 349
 350   memcached_free(memc);
 351
 352   if (context->execute_pairs)
 353     pairs_free(context->execute_pairs);
 354   free(context);
 355
 356   pthread_mutex_lock(&counter_mutex);
 357   thread_counter--;
 358   pthread_cond_signal(&count_threshhold);
 359   pthread_mutex_unlock(&counter_mutex);
 360
 361   return NULL;
 362 }
 363
 364 void flush_all(memcached_st *memc)
 365 {
 366   memcached_flush(memc, 0);
 367 }
 368
 369 pairs_st *load_create_data(memcached_st *memc, unsigned int number_of,
 370                            unsigned int *actual_loaded)
 371 {
 372   memcached_st *clone;
 373   pairs_st *pairs;
 374
 375   clone= memcached_clone(NULL, memc);
 376   /* We always used non-blocking IO for load since it is faster */
 377   memcached_behavior_set(clone, MEMCACHED_BEHAVIOR_NO_BLOCK, NULL );
 378
 379   pairs= pairs_generate(number_of);
 380   *actual_loaded= execute_set(clone, pairs, number_of);
 381
 382   memcached_free(clone);
 383
 384   return pairs;
 385 }