SAFE public projects git trees. - safe/jmp/linux-2.6/blob - tools/perf/builtin-record.c

   1 /*
   2  * builtin-record.c
   3  *
   4  * Builtin record command: Record the profile of a workload
   5  * (or a CPU, or a PID) into the perf.data output file - for
   6  * later analysis via perf report.
   7  */
   8 #define _LARGEFILE64_SOURCE
   9 #define _FILE_OFFSET_BITS 64
  10
  11 #include "builtin.h"
  12
  13 #include "perf.h"
  14
  15 #include "util/util.h"
  16 #include "util/parse-options.h"
  17 #include "util/parse-events.h"
  18 #include "util/string.h"
  19
  20 #include "util/header.h"
  21 #include "util/event.h"
  22 #include "util/debug.h"
  23 #include "util/session.h"
  24 #include "util/symbol.h"
  25
  26 #include <unistd.h>
  27 #include <sched.h>
  28
  29 static int                      fd[MAX_NR_CPUS][MAX_COUNTERS];
  30
  31 static long                     default_interval                =      0;
  32
  33 static int                      nr_cpus                         =      0;
  34 static unsigned int             page_size;
  35 static unsigned int             mmap_pages                      =    128;
  36 static int                      freq                            =   1000;
  37 static int                      output;
  38 static const char               *output_name                    = "perf.data";
  39 static int                      group                           =      0;
  40 static unsigned int             realtime_prio                   =      0;
  41 static int                      raw_samples                     =      0;
  42 static int                      system_wide                     =      0;
  43 static int                      profile_cpu                     =     -1;
  44 static pid_t                    target_pid                      =     -1;
  45 static pid_t                    child_pid                       =     -1;
  46 static int                      inherit                         =      1;
  47 static int                      force                           =      0;
  48 static int                      append_file                     =      0;
  49 static int                      call_graph                      =      0;
  50 static int                      inherit_stat                    =      0;
  51 static int                      no_samples                      =      0;
  52 static int                      sample_address                  =      0;
  53 static int                      multiplex                       =      0;
  54 static int                      multiplex_fd                    =     -1;
  55
  56 static long                     samples                         =      0;
  57 static struct timeval           last_read;
  58 static struct timeval           this_read;
  59
  60 static u64                      bytes_written                   =      0;
  61
  62 static struct pollfd            event_array[MAX_NR_CPUS * MAX_COUNTERS];
  63
  64 static int                      nr_poll                         =      0;
  65 static int                      nr_cpu                          =      0;
  66
  67 static int                      file_new                        =      1;
  68
  69 static struct perf_session      *session;
  70
  71 struct mmap_data {
  72         int                     counter;
  73         void                    *base;
  74         unsigned int            mask;
  75         unsigned int            prev;
  76 };
  77
  78 static struct mmap_data         mmap_array[MAX_NR_CPUS][MAX_COUNTERS];
  79
  80 static unsigned long mmap_read_head(struct mmap_data *md)
  81 {
  82         struct perf_event_mmap_page *pc = md->base;
  83         long head;
  84
  85         head = pc->data_head;
  86         rmb();
  87
  88         return head;
  89 }
  90
  91 static void mmap_write_tail(struct mmap_data *md, unsigned long tail)
  92 {
  93         struct perf_event_mmap_page *pc = md->base;
  94
  95         /*
  96          * ensure all reads are done before we write the tail out.
  97          */
  98         /* mb(); */
  99         pc->data_tail = tail;
 100 }
 101
 102 static void write_output(void *buf, size_t size)
 103 {
 104         while (size) {
 105                 int ret = write(output, buf, size);
 106
 107                 if (ret < 0)
 108                         die("failed to write");
 109
 110                 size -= ret;
 111                 buf += ret;
 112
 113                 bytes_written += ret;
 114         }
 115 }
 116
 117 static void write_event(event_t *buf, size_t size)
 118 {
 119         /*
 120         * Add it to the list of DSOs, so that when we finish this
 121          * record session we can pick the available build-ids.
 122          */
 123         if (buf->header.type == PERF_RECORD_MMAP) {
 124                 struct list_head *head = &dsos__user;
 125                 if (buf->mmap.header.misc == 1)
 126                         head = &dsos__kernel;
 127                 __dsos__findnew(head, buf->mmap.filename);
 128         }
 129
 130         write_output(buf, size);
 131 }
 132
 133 static int process_synthesized_event(event_t *event,
 134                                      struct perf_session *self __used)
 135 {
 136         write_event(event, event->header.size);
 137         return 0;
 138 }
 139
 140 static void mmap_read(struct mmap_data *md)
 141 {
 142         unsigned int head = mmap_read_head(md);
 143         unsigned int old = md->prev;
 144         unsigned char *data = md->base + page_size;
 145         unsigned long size;
 146         void *buf;
 147         int diff;
 148
 149         gettimeofday(&this_read, NULL);
 150
 151         /*
 152          * If we're further behind than half the buffer, there's a chance
 153          * the writer will bite our tail and mess up the samples under us.
 154          *
 155          * If we somehow ended up ahead of the head, we got messed up.
 156          *
 157          * In either case, truncate and restart at head.
 158          */
 159         diff = head - old;
 160         if (diff < 0) {
 161                 struct timeval iv;
 162                 unsigned long msecs;
 163
 164                 timersub(&this_read, &last_read, &iv);
 165                 msecs = iv.tv_sec*1000 + iv.tv_usec/1000;
 166
 167                 fprintf(stderr, "WARNING: failed to keep up with mmap data."
 168                                 "  Last read %lu msecs ago.\n", msecs);
 169
 170                 /*
 171                  * head points to a known good entry, start there.
 172                  */
 173                 old = head;
 174         }
 175
 176         last_read = this_read;
 177
 178         if (old != head)
 179                 samples++;
 180
 181         size = head - old;
 182
 183         if ((old & md->mask) + size != (head & md->mask)) {
 184                 buf = &data[old & md->mask];
 185                 size = md->mask + 1 - (old & md->mask);
 186                 old += size;
 187
 188                 write_event(buf, size);
 189         }
 190
 191         buf = &data[old & md->mask];
 192         size = head - old;
 193         old += size;
 194
 195         write_event(buf, size);
 196
 197         md->prev = old;
 198         mmap_write_tail(md, old);
 199 }
 200
 201 static volatile int done = 0;
 202 static volatile int signr = -1;
 203
 204 static void sig_handler(int sig)
 205 {
 206         done = 1;
 207         signr = sig;
 208 }
 209
 210 static void sig_atexit(void)
 211 {
 212         if (child_pid != -1)
 213                 kill(child_pid, SIGTERM);
 214
 215         if (signr == -1)
 216                 return;
 217
 218         signal(signr, SIG_DFL);
 219         kill(getpid(), signr);
 220 }
 221
 222 static int group_fd;
 223
 224 static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int nr)
 225 {
 226         struct perf_header_attr *h_attr;
 227
 228         if (nr < session->header.attrs) {
 229                 h_attr = session->header.attr[nr];
 230         } else {
 231                 h_attr = perf_header_attr__new(a);
 232                 if (h_attr != NULL)
 233                         if (perf_header__add_attr(&session->header, h_attr) < 0) {
 234                                 perf_header_attr__delete(h_attr);
 235                                 h_attr = NULL;
 236                         }
 237         }
 238
 239         return h_attr;
 240 }
 241
 242 static void create_counter(int counter, int cpu, pid_t pid)
 243 {
 244         char *filter = filters[counter];
 245         struct perf_event_attr *attr = attrs + counter;
 246         struct perf_header_attr *h_attr;
 247         int track = !counter; /* only the first counter needs these */
 248         int ret;
 249         struct {
 250                 u64 count;
 251                 u64 time_enabled;
 252                 u64 time_running;
 253                 u64 id;
 254         } read_data;
 255
 256         attr->read_format       = PERF_FORMAT_TOTAL_TIME_ENABLED |
 257                                   PERF_FORMAT_TOTAL_TIME_RUNNING |
 258                                   PERF_FORMAT_ID;
 259
 260         attr->sample_type       |= PERF_SAMPLE_IP | PERF_SAMPLE_TID;
 261
 262         if (freq) {
 263                 attr->sample_type       |= PERF_SAMPLE_PERIOD;
 264                 attr->freq              = 1;
 265                 attr->sample_freq       = freq;
 266         }
 267
 268         if (no_samples)
 269                 attr->sample_freq = 0;
 270
 271         if (inherit_stat)
 272                 attr->inherit_stat = 1;
 273
 274         if (sample_address)
 275                 attr->sample_type       |= PERF_SAMPLE_ADDR;
 276
 277         if (call_graph)
 278                 attr->sample_type       |= PERF_SAMPLE_CALLCHAIN;
 279
 280         if (raw_samples) {
 281                 attr->sample_type       |= PERF_SAMPLE_TIME;
 282                 attr->sample_type       |= PERF_SAMPLE_RAW;
 283                 attr->sample_type       |= PERF_SAMPLE_CPU;
 284         }
 285
 286         attr->mmap              = track;
 287         attr->comm              = track;
 288         attr->inherit           = inherit;
 289         attr->disabled          = 1;
 290
 291 try_again:
 292         fd[nr_cpu][counter] = sys_perf_event_open(attr, pid, cpu, group_fd, 0);
 293
 294         if (fd[nr_cpu][counter] < 0) {
 295                 int err = errno;
 296
 297                 if (err == EPERM || err == EACCES)
 298                         die("Permission error - are you root?\n");
 299                 else if (err ==  ENODEV && profile_cpu != -1)
 300                         die("No such device - did you specify an out-of-range profile CPU?\n");
 301
 302                 /*
 303                  * If it's cycles then fall back to hrtimer
 304                  * based cpu-clock-tick sw counter, which
 305                  * is always available even if no PMU support:
 306                  */
 307                 if (attr->type == PERF_TYPE_HARDWARE
 308                         && attr->config == PERF_COUNT_HW_CPU_CYCLES) {
 309
 310                         if (verbose)
 311                                 warning(" ... trying to fall back to cpu-clock-ticks\n");
 312                         attr->type = PERF_TYPE_SOFTWARE;
 313                         attr->config = PERF_COUNT_SW_CPU_CLOCK;
 314                         goto try_again;
 315                 }
 316                 printf("\n");
 317                 error("perfcounter syscall returned with %d (%s)\n",
 318                         fd[nr_cpu][counter], strerror(err));
 319
 320 #if defined(__i386__) || defined(__x86_64__)
 321                 if (attr->type == PERF_TYPE_HARDWARE && err == EOPNOTSUPP)
 322                         die("No hardware sampling interrupt available. No APIC? If so then you can boot the kernel with the \"lapic\" boot parameter to force-enable it.\n");
 323 #endif
 324
 325                 die("No CONFIG_PERF_EVENTS=y kernel support configured?\n");
 326                 exit(-1);
 327         }
 328
 329         h_attr = get_header_attr(attr, counter);
 330         if (h_attr == NULL)
 331                 die("nomem\n");
 332
 333         if (!file_new) {
 334                 if (memcmp(&h_attr->attr, attr, sizeof(*attr))) {
 335                         fprintf(stderr, "incompatible append\n");
 336                         exit(-1);
 337                 }
 338         }
 339
 340         if (read(fd[nr_cpu][counter], &read_data, sizeof(read_data)) == -1) {
 341                 perror("Unable to read perf file descriptor\n");
 342                 exit(-1);
 343         }
 344
 345         if (perf_header_attr__add_id(h_attr, read_data.id) < 0) {
 346                 pr_warning("Not enough memory to add id\n");
 347                 exit(-1);
 348         }
 349
 350         assert(fd[nr_cpu][counter] >= 0);
 351         fcntl(fd[nr_cpu][counter], F_SETFL, O_NONBLOCK);
 352
 353         /*
 354          * First counter acts as the group leader:
 355          */
 356         if (group && group_fd == -1)
 357                 group_fd = fd[nr_cpu][counter];
 358         if (multiplex && multiplex_fd == -1)
 359                 multiplex_fd = fd[nr_cpu][counter];
 360
 361         if (multiplex && fd[nr_cpu][counter] != multiplex_fd) {
 362
 363                 ret = ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_SET_OUTPUT, multiplex_fd);
 364                 assert(ret != -1);
 365         } else {
 366                 event_array[nr_poll].fd = fd[nr_cpu][counter];
 367                 event_array[nr_poll].events = POLLIN;
 368                 nr_poll++;
 369
 370                 mmap_array[nr_cpu][counter].counter = counter;
 371                 mmap_array[nr_cpu][counter].prev = 0;
 372                 mmap_array[nr_cpu][counter].mask = mmap_pages*page_size - 1;
 373                 mmap_array[nr_cpu][counter].base = mmap(NULL, (mmap_pages+1)*page_size,
 374                                 PROT_READ|PROT_WRITE, MAP_SHARED, fd[nr_cpu][counter], 0);
 375                 if (mmap_array[nr_cpu][counter].base == MAP_FAILED) {
 376                         error("failed to mmap with %d (%s)\n", errno, strerror(errno));
 377                         exit(-1);
 378                 }
 379         }
 380
 381         if (filter != NULL) {
 382                 ret = ioctl(fd[nr_cpu][counter],
 383                             PERF_EVENT_IOC_SET_FILTER, filter);
 384                 if (ret) {
 385                         error("failed to set filter with %d (%s)\n", errno,
 386                               strerror(errno));
 387                         exit(-1);
 388                 }
 389         }
 390
 391         ioctl(fd[nr_cpu][counter], PERF_EVENT_IOC_ENABLE);
 392 }
 393
 394 static void open_counters(int cpu, pid_t pid)
 395 {
 396         int counter;
 397
 398         group_fd = -1;
 399         for (counter = 0; counter < nr_counters; counter++)
 400                 create_counter(counter, cpu, pid);
 401
 402         nr_cpu++;
 403 }
 404
 405 static void atexit_header(void)
 406 {
 407         session->header.data_size += bytes_written;
 408
 409         perf_header__write(&session->header, output, true);
 410 }
 411
 412 static int __cmd_record(int argc, const char **argv)
 413 {
 414         int i, counter;
 415         struct stat st;
 416         pid_t pid = 0;
 417         int flags;
 418         int err;
 419         unsigned long waking = 0;
 420         int child_ready_pipe[2], go_pipe[2];
 421         const bool forks = target_pid == -1 && argc > 0;
 422         char buf;
 423
 424         page_size = sysconf(_SC_PAGE_SIZE);
 425         nr_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 426         assert(nr_cpus <= MAX_NR_CPUS);
 427         assert(nr_cpus >= 0);
 428
 429         atexit(sig_atexit);
 430         signal(SIGCHLD, sig_handler);
 431         signal(SIGINT, sig_handler);
 432
 433         if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
 434                 perror("failed to create pipes");
 435                 exit(-1);
 436         }
 437
 438         if (!stat(output_name, &st) && st.st_size) {
 439                 if (!force) {
 440                         if (!append_file) {
 441                                 pr_err("Error, output file %s exists, use -A "
 442                                        "to append or -f to overwrite.\n",
 443                                        output_name);
 444                                 exit(-1);
 445                         }
 446                 } else {
 447                         char oldname[PATH_MAX];
 448                         snprintf(oldname, sizeof(oldname), "%s.old",
 449                                  output_name);
 450                         unlink(oldname);
 451                         rename(output_name, oldname);
 452                 }
 453         } else {
 454                 append_file = 0;
 455         }
 456
 457         flags = O_CREAT|O_RDWR|O_LARGEFILE;
 458         if (append_file)
 459                 file_new = 0;
 460         else
 461                 flags |= O_TRUNC;
 462
 463         output = open(output_name, flags, S_IRUSR|S_IWUSR);
 464         if (output < 0) {
 465                 perror("failed to create output file");
 466                 exit(-1);
 467         }
 468
 469         session = perf_session__new(output_name, O_WRONLY, force);
 470         if (session == NULL) {
 471                 pr_err("Not enough memory for reading perf file header\n");
 472                 return -1;
 473         }
 474
 475         if (!file_new) {
 476                 err = perf_header__read(&session->header, output);
 477                 if (err < 0)
 478                         return err;
 479         }
 480
 481         if (raw_samples) {
 482                 perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
 483         } else {
 484                 for (i = 0; i < nr_counters; i++) {
 485                         if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
 486                                 perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
 487                                 break;
 488                         }
 489                 }
 490         }
 491
 492         atexit(atexit_header);
 493
 494         if (forks) {
 495                 pid = fork();
 496                 if (pid < 0) {
 497                         perror("failed to fork");
 498                         exit(-1);
 499                 }
 500
 501                 if (!pid) {
 502                         close(child_ready_pipe[0]);
 503                         close(go_pipe[1]);
 504                         fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
 505
 506                         /*
 507                          * Do a dummy execvp to get the PLT entry resolved,
 508                          * so we avoid the resolver overhead on the real
 509                          * execvp call.
 510                          */
 511                         execvp("", (char **)argv);
 512
 513                         /*
 514                          * Tell the parent we're ready to go
 515                          */
 516                         close(child_ready_pipe[1]);
 517
 518                         /*
 519                          * Wait until the parent tells us to go.
 520                          */
 521                         if (read(go_pipe[0], &buf, 1) == -1)
 522                                 perror("unable to read pipe");
 523
 524                         execvp(argv[0], (char **)argv);
 525
 526                         perror(argv[0]);
 527                         exit(-1);
 528                 }
 529
 530                 child_pid = pid;
 531
 532                 if (!system_wide)
 533                         target_pid = pid;
 534
 535                 close(child_ready_pipe[1]);
 536                 close(go_pipe[0]);
 537                 /*
 538                  * wait for child to settle
 539                  */
 540                 if (read(child_ready_pipe[0], &buf, 1) == -1) {
 541                         perror("unable to read pipe");
 542                         exit(-1);
 543                 }
 544                 close(child_ready_pipe[0]);
 545         }
 546
 547
 548         if ((!system_wide && !inherit) || profile_cpu != -1) {
 549                 open_counters(profile_cpu, target_pid);
 550         } else {
 551                 for (i = 0; i < nr_cpus; i++)
 552                         open_counters(i, target_pid);
 553         }
 554
 555         if (file_new) {
 556                 err = perf_header__write(&session->header, output, false);
 557                 if (err < 0)
 558                         return err;
 559         }
 560
 561         err = event__synthesize_kernel_mmap(process_synthesized_event,
 562                                             session, "_text");
 563         if (err < 0) {
 564                 pr_err("Couldn't record kernel reference relocation symbol.\n");
 565                 return err;
 566         }
 567
 568         err = event__synthesize_modules(process_synthesized_event, session);
 569         if (err < 0) {
 570                 pr_err("Couldn't record kernel reference relocation symbol.\n");
 571                 return err;
 572         }
 573
 574         if (!system_wide && profile_cpu == -1)
 575                 event__synthesize_thread(pid, process_synthesized_event,
 576                                          session);
 577         else
 578                 event__synthesize_threads(process_synthesized_event, session);
 579
 580         if (realtime_prio) {
 581                 struct sched_param param;
 582
 583                 param.sched_priority = realtime_prio;
 584                 if (sched_setscheduler(0, SCHED_FIFO, &param)) {
 585                         pr_err("Could not set realtime priority.\n");
 586                         exit(-1);
 587                 }
 588         }
 589
 590         /*
 591          * Let the child rip
 592          */
 593         if (forks)
 594                 close(go_pipe[1]);
 595
 596         for (;;) {
 597                 int hits = samples;
 598
 599                 for (i = 0; i < nr_cpu; i++) {
 600                         for (counter = 0; counter < nr_counters; counter++) {
 601                                 if (mmap_array[i][counter].base)
 602                                         mmap_read(&mmap_array[i][counter]);
 603                         }
 604                 }
 605
 606                 if (hits == samples) {
 607                         if (done)
 608                                 break;
 609                         err = poll(event_array, nr_poll, -1);
 610                         waking++;
 611                 }
 612
 613                 if (done) {
 614                         for (i = 0; i < nr_cpu; i++) {
 615                                 for (counter = 0; counter < nr_counters; counter++)
 616                                         ioctl(fd[i][counter], PERF_EVENT_IOC_DISABLE);
 617                         }
 618                 }
 619         }
 620
 621         fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
 622
 623         /*
 624          * Approximate RIP event size: 24 bytes.
 625          */
 626         fprintf(stderr,
 627                 "[ perf record: Captured and wrote %.3f MB %s (~%lld samples) ]\n",
 628                 (double)bytes_written / 1024.0 / 1024.0,
 629                 output_name,
 630                 bytes_written / 24);
 631
 632         return 0;
 633 }
 634
 635 static const char * const record_usage[] = {
 636         "perf record [<options>] [<command>]",
 637         "perf record [<options>] -- <command> [<options>]",
 638         NULL
 639 };
 640
 641 static const struct option options[] = {
 642         OPT_CALLBACK('e', "event", NULL, "event",
 643                      "event selector. use 'perf list' to list available events",
 644                      parse_events),
 645         OPT_CALLBACK(0, "filter", NULL, "filter",
 646                      "event filter", parse_filter),
 647         OPT_INTEGER('p', "pid", &target_pid,
 648                     "record events on existing pid"),
 649         OPT_INTEGER('r', "realtime", &realtime_prio,
 650                     "collect data with this RT SCHED_FIFO priority"),
 651         OPT_BOOLEAN('R', "raw-samples", &raw_samples,
 652                     "collect raw sample records from all opened counters"),
 653         OPT_BOOLEAN('a', "all-cpus", &system_wide,
 654                             "system-wide collection from all CPUs"),
 655         OPT_BOOLEAN('A', "append", &append_file,
 656                             "append to the output file to do incremental profiling"),
 657         OPT_INTEGER('C', "profile_cpu", &profile_cpu,
 658                             "CPU to profile on"),
 659         OPT_BOOLEAN('f', "force", &force,
 660                         "overwrite existing data file"),
 661         OPT_LONG('c', "count", &default_interval,
 662                     "event period to sample"),
 663         OPT_STRING('o', "output", &output_name, "file",
 664                     "output file name"),
 665         OPT_BOOLEAN('i', "inherit", &inherit,
 666                     "child tasks inherit counters"),
 667         OPT_INTEGER('F', "freq", &freq,
 668                     "profile at this frequency"),
 669         OPT_INTEGER('m', "mmap-pages", &mmap_pages,
 670                     "number of mmap data pages"),
 671         OPT_BOOLEAN('g', "call-graph", &call_graph,
 672                     "do call-graph (stack chain/backtrace) recording"),
 673         OPT_BOOLEAN('v', "verbose", &verbose,
 674                     "be more verbose (show counter open errors, etc)"),
 675         OPT_BOOLEAN('s', "stat", &inherit_stat,
 676                     "per thread counts"),
 677         OPT_BOOLEAN('d', "data", &sample_address,
 678                     "Sample addresses"),
 679         OPT_BOOLEAN('n', "no-samples", &no_samples,
 680                     "don't sample"),
 681         OPT_BOOLEAN('M', "multiplex", &multiplex,
 682                     "multiplex counter output in a single channel"),
 683         OPT_END()
 684 };
 685
 686 int cmd_record(int argc, const char **argv, const char *prefix __used)
 687 {
 688         int counter;
 689
 690         argc = parse_options(argc, argv, options, record_usage,
 691                             PARSE_OPT_STOP_AT_NON_OPTION);
 692         if (!argc && target_pid == -1 && !system_wide && profile_cpu == -1)
 693                 usage_with_options(record_usage, options);
 694
 695         symbol__init();
 696
 697         if (!nr_counters) {
 698                 nr_counters     = 1;
 699                 attrs[0].type   = PERF_TYPE_HARDWARE;
 700                 attrs[0].config = PERF_COUNT_HW_CPU_CYCLES;
 701         }
 702
 703         /*
 704          * User specified count overrides default frequency.
 705          */
 706         if (default_interval)
 707                 freq = 0;
 708         else if (freq) {
 709                 default_interval = freq;
 710         } else {
 711                 fprintf(stderr, "frequency and count are zero, aborting\n");
 712                 exit(EXIT_FAILURE);
 713         }
 714
 715         for (counter = 0; counter < nr_counters; counter++) {
 716                 if (attrs[counter].sample_period)
 717                         continue;
 718
 719                 attrs[counter].sample_period = default_interval;
 720         }
 721
 722         return __cmd_record(argc, argv);
 723 }