iowatcher/main.c

   1 /*
   2  * Copyright (C) 2012 Fusion-io
   3  *
   4  *  This program is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU General Public
   6  *  License v2 as published by the Free Software Foundation.
   7  *
   8  *  This program is distributed in the hope that it will be useful,
   9  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  *  GNU General Public License for more details.
  12  *
  13  *  You should have received a copy of the GNU General Public License
  14  *  along with this program; if not, write to the Free Software
  15  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  16  *
  17  *  Parts of this file were imported from Jens Axboe's blktrace sources (also GPL)
  18  */
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <fcntl.h>
  22 #include <unistd.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <math.h>
  26 #include <inttypes.h>
  27 #include <string.h>
  28 #include <asm/types.h>
  29 #include <errno.h>
  30 #include <sys/mman.h>
  31 #include <time.h>
  32 #include <math.h>
  33 #include <getopt.h>
  34 #include <limits.h>
  35 #include <float.h>
  36
  37 #include "plot.h"
  38 #include "blkparse.h"
  39 #include "list.h"
  40 #include "tracers.h"
  41 #include "mpstat.h"
  42 #include "fio.h"
  43
  44 LIST_HEAD(all_traces);
  45 LIST_HEAD(fio_traces);
  46
  47 static char line[1024];
  48 static int line_len = 1024;
  49 static int found_mpstat = 0;
  50 static int make_movie = 0;
  51 static int keep_movie_svgs = 0;
  52 static int opt_graph_width = 0;
  53 static int opt_graph_height = 0;
  54
  55 static int columns = 1;
  56 static int num_xticks = 7;
  57 static int num_yticks = 4;
  58
  59 static double min_time = 0;
  60 static double max_time = DBL_MAX;
  61 static unsigned long long min_mb = 0;
  62 static unsigned long long max_mb = ULLONG_MAX >> 20;
  63
  64 int plot_io_action = 0;
  65 int io_per_process = 0;
  66 unsigned int longest_proc_name = 0;
  67
  68 /*
  69  * this doesn't include the IO graph,
  70  * but it counts the other graphs as they go out
  71  */
  72 static int total_graphs_written = 1;
  73
  74 enum {
  75         IO_GRAPH_INDEX = 0,
  76         TPUT_GRAPH_INDEX,
  77         FIO_GRAPH_INDEX,
  78         CPU_SYS_GRAPH_INDEX,
  79         CPU_IO_GRAPH_INDEX,
  80         CPU_IRQ_GRAPH_INDEX,
  81         CPU_SOFT_GRAPH_INDEX,
  82         CPU_USER_GRAPH_INDEX,
  83         LATENCY_GRAPH_INDEX,
  84         QUEUE_DEPTH_GRAPH_INDEX,
  85         IOPS_GRAPH_INDEX,
  86         TOTAL_GRAPHS
  87 };
  88
  89 enum {
  90         MPSTAT_SYS = 0,
  91         MPSTAT_IRQ,
  92         MPSTAT_IO,
  93         MPSTAT_SOFT,
  94         MPSTAT_USER,
  95         MPSTAT_GRAPHS
  96 };
  97
  98 static char *graphs_by_name[] = {
  99         "io",
 100         "tput",
 101         "fio",
 102         "cpu-sys",
 103         "cpu-io",
 104         "cpu-irq",
 105         "cpu-soft",
 106         "cpu-user",
 107         "latency",
 108         "queue-depth",
 109         "iops",
 110 };
 111
 112 enum {
 113         MOVIE_SPINDLE,
 114         MOVIE_RECT,
 115         NUM_MOVIE_STYLES,
 116 };
 117
 118 char *movie_styles[] = {
 119         "spindle",
 120         "rect",
 121         NULL
 122 };
 123
 124 static int movie_style = 0;
 125
 126 static int lookup_movie_style(char *str)
 127 {
 128         int i;
 129
 130         for (i = 0; i < NUM_MOVIE_STYLES; i++) {
 131                 if (strcmp(str, movie_styles[i]) == 0)
 132                         return i;
 133         }
 134         return -1;
 135 }
 136
 137 static int active_graphs[TOTAL_GRAPHS];
 138 static int last_active_graph = IOPS_GRAPH_INDEX;
 139
 140 static int label_index = 0;
 141 static int num_traces = 0;
 142 static int num_fio_traces = 0;
 143 static int longest_label = 0;
 144
 145 static char *graph_title = "";
 146 static char *output_filename = "trace.svg";
 147 static char *blktrace_devices[MAX_DEVICES_PER_TRACE];
 148 static int num_blktrace_devices = 0;
 149 static char *blktrace_outfile = "trace";
 150 static char *blktrace_dest_dir = ".";
 151 static char *program_to_run = NULL;
 152 static char *ffmpeg_codec = "libx264";
 153
 154 static void alloc_mpstat_gld(struct trace_file *tf)
 155 {
 156         struct graph_line_data **ptr;
 157
 158         if (tf->trace->mpstat_num_cpus == 0)
 159                 return;
 160
 161         ptr = calloc((tf->trace->mpstat_num_cpus + 1) * MPSTAT_GRAPHS,
 162                      sizeof(struct graph_line_data *));
 163         if (!ptr) {
 164                 perror("Unable to allocate mpstat arrays\n");
 165                 exit(1);
 166         }
 167         tf->mpstat_gld = ptr;
 168 }
 169
 170 static void enable_all_graphs(void)
 171 {
 172         int i;
 173         for (i = 0; i < TOTAL_GRAPHS; i++)
 174                 active_graphs[i] = 1;
 175 }
 176
 177 static void disable_all_graphs(void)
 178 {
 179         int i;
 180         for (i = 0; i < TOTAL_GRAPHS; i++)
 181                 active_graphs[i] = 0;
 182 }
 183
 184 static int enable_one_graph(char *name)
 185 {
 186         int i;
 187         for (i = 0; i < TOTAL_GRAPHS; i++) {
 188                 if (strcmp(name, graphs_by_name[i]) == 0) {
 189                         active_graphs[i] = 1;
 190                         return 0;
 191                 }
 192         }
 193         return -ENOENT;
 194 }
 195
 196 static int disable_one_graph(char *name)
 197 {
 198         int i;
 199         for (i = 0; i < TOTAL_GRAPHS; i++) {
 200                 if (strcmp(name, graphs_by_name[i]) == 0) {
 201                         active_graphs[i] = 0;
 202                         return 0;
 203                 }
 204         }
 205         return -ENOENT;
 206 }
 207
 208 static int last_graph(void)
 209 {
 210         int i;
 211         for (i = TOTAL_GRAPHS - 1; i >= 0; i--) {
 212                 if (active_graphs[i]) {
 213                         return i;
 214                 }
 215         }
 216         return -ENOENT;
 217 }
 218
 219 static int graphs_left(int cur)
 220 {
 221         int i;
 222         int left = 0;
 223         for (i = cur; i < TOTAL_GRAPHS; i++) {
 224                 if (active_graphs[i])
 225                         left++;
 226         }
 227         return left;
 228 }
 229
 230 static char * join_path(char *dest_dir, char *filename)
 231 {
 232         /* alloc 2 extra bytes for '/' and '\0' */
 233         char *path = malloc(strlen(dest_dir) + strlen(filename) + 2);
 234         sprintf(path, "%s%s%s", dest_dir, "/", filename);
 235
 236         return path;
 237 }
 238
 239 static void add_trace_file(char *filename)
 240 {
 241         struct trace_file *tf;
 242
 243         tf = calloc(1, sizeof(*tf));
 244         if (!tf) {
 245                 fprintf(stderr, "Unable to allocate memory\n");
 246                 exit(1);
 247         }
 248         tf->label = "";
 249         tf->filename = strdup(filename);
 250         list_add_tail(&tf->list, &all_traces);
 251         tf->line_color = "black";
 252         num_traces++;
 253 }
 254
 255 static void add_fio_trace_file(char *filename)
 256 {
 257         struct trace_file *tf;
 258
 259         tf = calloc(1, sizeof(*tf));
 260         if (!tf) {
 261                 fprintf(stderr, "Unable to allocate memory\n");
 262                 exit(1);
 263         }
 264         tf->label = "";
 265         tf->filename = strdup(filename);
 266         list_add_tail(&tf->list, &fio_traces);
 267         tf->line_color = pick_fio_color();
 268         tf->fio_trace = 1;
 269         num_fio_traces++;
 270 }
 271
 272 static void setup_trace_file_graphs(void)
 273 {
 274         struct trace_file *tf;
 275         int i;
 276         int alloc_ptrs;
 277
 278         if (io_per_process)
 279                 alloc_ptrs = 16;
 280         else
 281                 alloc_ptrs = 1;
 282
 283         list_for_each_entry(tf, &all_traces, list) {
 284                 tf->tput_reads_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 285                 tf->tput_writes_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 286                 tf->latency_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 287                 tf->queue_depth_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 288
 289                 tf->iop_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 290                 tf->gdd_writes = calloc(alloc_ptrs, sizeof(struct graph_dot_data));
 291                 tf->gdd_reads = calloc(alloc_ptrs, sizeof(struct graph_dot_data));
 292                 tf->io_plots_allocated = alloc_ptrs;
 293
 294                 if (tf->trace->mpstat_num_cpus == 0)
 295                         continue;
 296
 297                 alloc_mpstat_gld(tf);
 298                 for (i = 0; i < (tf->trace->mpstat_num_cpus + 1) * MPSTAT_GRAPHS; i++) {
 299                         tf->mpstat_gld[i] =
 300                                 alloc_line_data(tf->mpstat_min_seconds,
 301                                                 tf->mpstat_max_seconds,
 302                                                 tf->mpstat_max_seconds);
 303                         tf->mpstat_gld[i]->max = 100;
 304                 }
 305         }
 306
 307         list_for_each_entry(tf, &fio_traces, list) {
 308                 if (tf->trace->fio_seconds > 0) {
 309                         tf->fio_gld = alloc_line_data(tf->min_seconds,
 310                                                       tf->max_seconds,
 311                                                       tf->stop_seconds);
 312                 }
 313         }
 314
 315 }
 316
 317 static void read_traces(void)
 318 {
 319         struct trace_file *tf;
 320         struct trace *trace;
 321         u64 last_time;
 322         u64 ymin;
 323         u64 ymax;
 324         u64 max_bank;
 325         u64 max_bank_offset;
 326         char *path = NULL;
 327
 328         list_for_each_entry(tf, &all_traces, list) {
 329                 path = join_path(blktrace_dest_dir, tf->filename);
 330
 331                 trace = open_trace(path);
 332                 if (!trace)
 333                         exit(1);
 334
 335                 last_time = find_last_time(trace);
 336                 tf->trace = trace;
 337                 tf->max_seconds = SECONDS(last_time) + 1;
 338                 tf->stop_seconds = SECONDS(last_time) + 1;
 339
 340                 find_extreme_offsets(trace, &tf->min_offset, &tf->max_offset,
 341                                     &max_bank, &max_bank_offset);
 342                 filter_outliers(trace, tf->min_offset, tf->max_offset, &ymin, &ymax);
 343                 tf->min_offset = ymin;
 344                 tf->max_offset = ymax;
 345
 346                 read_mpstat(trace, path);
 347                 tf->mpstat_stop_seconds = trace->mpstat_seconds;
 348                 tf->mpstat_max_seconds = trace->mpstat_seconds;
 349                 if (tf->mpstat_max_seconds)
 350                         found_mpstat = 1;
 351
 352                 free(path);
 353         }
 354
 355         list_for_each_entry(tf, &fio_traces, list) {
 356                 trace = open_fio_trace(tf->filename);
 357                 if (!trace)
 358                         exit(1);
 359                 tf->trace = trace;
 360                 tf->max_seconds = tf->trace->fio_seconds;
 361                 tf->stop_seconds = tf->trace->fio_seconds;
 362         }
 363 }
 364
 365 static void pick_line_graph_color(void)
 366 {
 367         struct trace_file *tf;
 368         int i;
 369
 370         list_for_each_entry(tf, &all_traces, list) {
 371                 for (i = 0; i < tf->io_plots; i++) {
 372                         if (tf->gdd_reads[i]) {
 373                                 tf->line_color = tf->gdd_reads[i]->color;
 374                                 tf->reads_color = tf->gdd_reads[i]->color;
 375                         }
 376                         if (tf->gdd_writes[i]) {
 377                                 tf->line_color = tf->gdd_writes[i]->color;
 378                                 tf->writes_color = tf->gdd_writes[i]->color;
 379                         }
 380                         if (tf->writes_color && tf->reads_color)
 381                                 break;
 382                 }
 383                 if (!tf->reads_color)
 384                         tf->reads_color = tf->line_color;
 385                 if (!tf->writes_color)
 386                         tf->writes_color = tf->line_color;
 387         }
 388 }
 389
 390 static void read_fio_events(struct trace_file *tf)
 391 {
 392         u64 bw = 0;
 393         int time = 0;
 394         int dir = 0;
 395         int ret;
 396
 397         first_fio(tf->trace);
 398         while (1) {
 399                 ret = read_fio_event(tf->trace, &time, &bw, &dir);
 400                 if (ret)
 401                         break;
 402
 403                 if (dir <= 1)
 404                         add_fio_gld(time, bw, tf->fio_gld);
 405                 if (next_fio_line(tf->trace))
 406                         break;
 407         }
 408 }
 409
 410 static void read_trace_events(void)
 411 {
 412
 413         struct trace_file *tf;
 414         struct trace *trace;
 415         int ret;
 416         int i;
 417         int time;
 418         double user, sys, iowait, irq, soft;
 419         double max_user = 0, max_sys = 0, max_iowait = 0,
 420                max_irq = 0, max_soft = 0;
 421
 422         list_for_each_entry(tf, &fio_traces, list)
 423                 read_fio_events(tf);
 424
 425         list_for_each_entry(tf, &all_traces, list) {
 426                 trace = tf->trace;
 427
 428                 first_record(trace);
 429                 while (1) {
 430                         check_record(trace);
 431                         add_tput(trace, tf->tput_writes_gld, tf->tput_reads_gld);
 432                         add_iop(trace, tf->iop_gld);
 433                         add_io(trace, tf);
 434                         add_pending_io(trace, tf->queue_depth_gld);
 435                         add_completed_io(trace, tf->latency_gld);
 436                         ret = next_record(trace);
 437                         if (ret)
 438                                 break;
 439                 }
 440         }
 441         list_for_each_entry(tf, &all_traces, list) {
 442                 trace = tf->trace;
 443
 444                 if (trace->mpstat_num_cpus == 0)
 445                         continue;
 446
 447                 first_mpstat(trace);
 448
 449                 for (time = 0; time < tf->mpstat_stop_seconds; time ++) {
 450                         for (i = 0; i < (trace->mpstat_num_cpus + 1) * MPSTAT_GRAPHS; i += MPSTAT_GRAPHS) {
 451                                 ret = read_mpstat_event(trace, &user, &sys,
 452                                                         &iowait, &irq, &soft);
 453                                 if (ret)
 454                                         goto mpstat_done;
 455                                 if (next_mpstat_line(trace))
 456                                         goto mpstat_done;
 457
 458                                 if (sys > max_sys)
 459                                         max_sys = sys;
 460                                 if (user > max_user)
 461                                         max_user = user;
 462                                 if (irq > max_irq)
 463                                         max_irq = irq;
 464                                 if (iowait > max_iowait)
 465                                         max_iowait = iowait;
 466
 467                                 add_mpstat_gld(time, sys, tf->mpstat_gld[i + MPSTAT_SYS]);
 468                                 add_mpstat_gld(time, irq, tf->mpstat_gld[i + MPSTAT_IRQ]);
 469                                 add_mpstat_gld(time, soft, tf->mpstat_gld[i + MPSTAT_SOFT]);
 470                                 add_mpstat_gld(time, user, tf->mpstat_gld[i + MPSTAT_USER]);
 471                                 add_mpstat_gld(time, iowait, tf->mpstat_gld[i + MPSTAT_IO]);
 472                         }
 473                         if (next_mpstat(trace) == NULL)
 474                                 break;
 475                 }
 476         }
 477
 478 mpstat_done:
 479         list_for_each_entry(tf, &all_traces, list) {
 480                 trace = tf->trace;
 481
 482                 if (trace->mpstat_num_cpus == 0)
 483                         continue;
 484
 485                 tf->mpstat_gld[MPSTAT_SYS]->max = max_sys;
 486                 tf->mpstat_gld[MPSTAT_IRQ]->max = max_irq;
 487                 tf->mpstat_gld[MPSTAT_SOFT]->max = max_soft;
 488                 tf->mpstat_gld[MPSTAT_USER]->max = max_user;
 489                 tf->mpstat_gld[MPSTAT_IO]->max = max_iowait;;
 490         }
 491         return;
 492 }
 493
 494 static void set_trace_label(char *label)
 495 {
 496         int cur = 0;
 497         struct trace_file *tf;
 498         int len = strlen(label);
 499
 500         if (len > longest_label)
 501                 longest_label = len;
 502
 503         list_for_each_entry(tf, &all_traces, list) {
 504                 if (cur == label_index) {
 505                         tf->label = strdup(label);
 506                         label_index++;
 507                         return;
 508                         break;
 509                 }
 510                 cur++;
 511         }
 512         list_for_each_entry(tf, &fio_traces, list) {
 513                 if (cur == label_index) {
 514                         tf->label = strdup(label);
 515                         label_index++;
 516                         break;
 517                 }
 518                 cur++;
 519         }
 520 }
 521
 522 static void set_blktrace_outfile(char *arg)
 523 {
 524         char *s = strdup(arg);
 525         char *last_dot = strrchr(s, '.');
 526
 527         if (last_dot) {
 528                 if (strcmp(last_dot, ".dump") == 0)
 529                         *last_dot = '\0';
 530         }
 531         blktrace_outfile = s;
 532 }
 533
 534
 535 static void compare_minmax_tf(struct trace_file *tf, int *max_seconds, u64 *min_offset, u64 *max_offset)
 536 {
 537         if (tf->max_seconds > *max_seconds)
 538                 *max_seconds = tf->max_seconds;
 539         if (tf->max_offset > *max_offset)
 540                 *max_offset = tf->max_offset;
 541         if (tf->min_offset < *min_offset)
 542                 *min_offset = tf->min_offset;
 543 }
 544
 545 static void set_all_minmax_tf(int min_seconds, int max_seconds, u64 min_offset, u64 max_offset)
 546 {
 547         struct trace_file *tf;
 548         struct list_head *traces = &all_traces;
 549 again:
 550         list_for_each_entry(tf, traces, list) {
 551                 tf->min_seconds = min_seconds;
 552                 tf->max_seconds = max_seconds;
 553                 if (tf->stop_seconds > max_seconds)
 554                         tf->stop_seconds = max_seconds;
 555                 if (tf->mpstat_max_seconds) {
 556                         tf->mpstat_min_seconds = min_seconds;
 557                         tf->mpstat_max_seconds = max_seconds;
 558                         if (tf->mpstat_stop_seconds > max_seconds)
 559                                 tf->mpstat_stop_seconds = max_seconds;
 560                 }
 561                 tf->min_offset = min_offset;
 562                 tf->max_offset = max_offset;
 563         }
 564         if (traces == &all_traces) {
 565                 traces = &fio_traces;
 566                 goto again;
 567         }
 568 }
 569
 570 static char *create_movie_temp_dir(void)
 571 {
 572         char *ret;
 573         char *pattern = strdup("io-movie-XXXXXX");;
 574
 575         ret = mkdtemp(pattern);
 576         if (!ret) {
 577                 perror("Unable to create temp directory for movie files");
 578                 exit(1);
 579         }
 580         return ret;
 581 }
 582
 583 static struct pid_plot_history *alloc_pid_plot_history(char *color)
 584 {
 585         struct pid_plot_history *pph;
 586
 587         pph = calloc(1, sizeof(struct pid_plot_history));
 588         if (!pph) {
 589                 perror("memory allocation failed");
 590                 exit(1);
 591         }
 592         pph->history = malloc(sizeof(double) * 4096);
 593         if (!pph->history) {
 594                 perror("memory allocation failed");
 595                 exit(1);
 596         }
 597         pph->history_len = 4096;
 598         pph->color = color;
 599
 600         return pph;
 601 }
 602
 603 static struct plot_history *alloc_plot_history(struct trace_file *tf)
 604 {
 605         struct plot_history *ph = calloc(1, sizeof(struct plot_history));
 606         int i;
 607
 608         if (!ph) {
 609                 perror("memory allocation failed");
 610                 exit(1);
 611         }
 612         ph->read_pid_history = calloc(tf->io_plots, sizeof(struct pid_plot_history *));
 613         if (!ph->read_pid_history) {
 614                 perror("memory allocation failed");
 615                 exit(1);
 616         }
 617         ph->write_pid_history = calloc(tf->io_plots, sizeof(struct pid_plot_history *));
 618         if (!ph->write_pid_history) {
 619                 perror("memory allocation failed");
 620                 exit(1);
 621         }
 622         ph->pid_history_count = tf->io_plots;
 623         for (i = 0; i < tf->io_plots; i++) {
 624                 if (tf->gdd_reads[i])
 625                         ph->read_pid_history[i] = alloc_pid_plot_history(tf->gdd_reads[i]->color);
 626                 if (tf->gdd_writes[i])
 627                         ph->write_pid_history[i] = alloc_pid_plot_history(tf->gdd_writes[i]->color);
 628         }
 629         return ph;
 630 }
 631
 632 LIST_HEAD(movie_history);
 633 int num_histories = 0;
 634
 635 static void free_plot_history(struct plot_history *ph)
 636 {
 637         int pid;
 638
 639         for (pid = 0; pid < ph->pid_history_count; pid++) {
 640                 if (ph->read_pid_history[pid])
 641                         free(ph->read_pid_history[pid]);
 642                 if (ph->write_pid_history[pid])
 643                         free(ph->write_pid_history[pid]);
 644         }
 645         free(ph->read_pid_history);
 646         free(ph->write_pid_history);
 647         free(ph);
 648 }
 649
 650 static void add_history(struct plot_history *ph, struct list_head *list)
 651 {
 652         struct plot_history *entry;
 653
 654         list_add_tail(&ph->list, list);
 655         num_histories++;
 656
 657         if (num_histories > 12) {
 658                 num_histories--;
 659                 entry = list_entry(list->next, struct plot_history, list);
 660                 list_del(&entry->list);
 661                 free_plot_history(entry);
 662         }
 663 }
 664
 665 static void plot_movie_history(struct plot *plot, struct list_head *list)
 666 {
 667         struct plot_history *ph;
 668         int pid;
 669
 670         if (num_histories > 2)
 671                 rewind_spindle_steps(num_histories - 1);
 672
 673         list_for_each_entry(ph, list, list) {
 674                 for (pid = 0; pid < ph->pid_history_count; pid++) {
 675                         if (ph->read_pid_history[pid]) {
 676                                 if (movie_style == MOVIE_SPINDLE) {
 677                                         svg_io_graph_movie_array_spindle(plot,
 678                                                 ph->read_pid_history[pid]);
 679                                 } else {
 680                                         svg_io_graph_movie_array(plot,
 681                                                 ph->read_pid_history[pid]);
 682                                 }
 683                         }
 684                         if (ph->write_pid_history[pid]) {
 685                                 if (movie_style == MOVIE_SPINDLE) {
 686                                         svg_io_graph_movie_array_spindle(plot,
 687                                                 ph->write_pid_history[pid]);
 688                                 } else {
 689                                         svg_io_graph_movie_array(plot,
 690                                                 ph->write_pid_history[pid]);
 691                                 }
 692                         }
 693                 }
 694          }
 695 }
 696
 697 static void free_all_plot_history(struct list_head *head)
 698 {
 699         struct plot_history *entry;
 700
 701         while (!list_empty(head)) {
 702                 entry = list_entry(head->next, struct plot_history, list);
 703                 list_del(&entry->list);
 704                 free_plot_history(entry);
 705         }
 706 }
 707
 708 static int count_io_plot_types(void)
 709 {
 710         struct trace_file *tf;
 711         int i;
 712         int total_io_types = 0;
 713
 714         list_for_each_entry(tf, &all_traces, list) {
 715                 for (i = 0; i < tf->io_plots; i++) {
 716                         if (tf->gdd_reads[i])
 717                                 total_io_types++;
 718                         if (tf->gdd_writes[i])
 719                                 total_io_types++;
 720                 }
 721         }
 722         return total_io_types;
 723 }
 724
 725 static void plot_io(struct plot *plot, int min_seconds, int max_seconds, u64 min_offset, u64 max_offset)
 726 {
 727         struct trace_file *tf;
 728         int i;
 729
 730         if (active_graphs[IO_GRAPH_INDEX] == 0)
 731                 return;
 732
 733         setup_axis(plot);
 734
 735         svg_alloc_legend(plot, count_io_plot_types() * 2);
 736
 737         set_plot_label(plot, "Device IO");
 738         set_ylabel(plot, "Offset (MB)");
 739         set_yticks(plot, num_yticks, min_offset / (1024 * 1024),
 740                    max_offset / (1024 * 1024), "");
 741         set_xticks(plot, num_xticks, min_seconds, max_seconds);
 742
 743         list_for_each_entry(tf, &all_traces, list) {
 744                 char label[256];
 745                 char *pos;
 746
 747                 if (!tf->label)
 748                         label[0] = 0;
 749                 else {
 750                         strcpy(label, tf->label);
 751                         if (io_per_process)
 752                                 strcat(label, " ");
 753                 }
 754                 pos = label + strlen(label);
 755
 756                 for (i = 0; i < tf->io_plots; i++) {
 757                         if (tf->gdd_writes[i]) {
 758                                 svg_io_graph(plot, tf->gdd_writes[i]);
 759                                 if (io_per_process)
 760                                         strcpy(pos, tf->gdd_writes[i]->label);
 761                                 svg_add_legend(plot, label, " Writes", tf->gdd_writes[i]->color);
 762                         }
 763                         if (tf->gdd_reads[i]) {
 764                                 svg_io_graph(plot, tf->gdd_reads[i]);
 765                                 if (io_per_process)
 766                                         strcpy(pos, tf->gdd_reads[i]->label);
 767                                 svg_add_legend(plot, label, " Reads", tf->gdd_reads[i]->color);
 768                         }
 769
 770                 }
 771         }
 772         if (plot->add_xlabel)
 773                 set_xlabel(plot, "Time (seconds)");
 774         svg_write_legend(plot);
 775         close_plot(plot);
 776 }
 777
 778 static void plot_tput(struct plot *plot, int min_seconds, int max_seconds,
 779                       int with_legend)
 780 {
 781         struct trace_file *tf;
 782         char *units;
 783         char line[128];
 784         u64 max = 0;
 785
 786         if (active_graphs[TPUT_GRAPH_INDEX] == 0)
 787                 return;
 788
 789         if (with_legend)
 790                 svg_alloc_legend(plot, num_traces * 2);
 791
 792         list_for_each_entry(tf, &all_traces, list) {
 793                 if (tf->tput_writes_gld->max > max)
 794                         max = tf->tput_writes_gld->max;
 795                 if (tf->tput_reads_gld->max > max)
 796                         max = tf->tput_reads_gld->max;
 797         }
 798         list_for_each_entry(tf, &all_traces, list) {
 799                 if (tf->tput_writes_gld->max > 0)
 800                         tf->tput_writes_gld->max = max;
 801                 if (tf->tput_reads_gld->max > 0)
 802                         tf->tput_reads_gld->max = max;
 803         }
 804
 805         setup_axis(plot);
 806         set_plot_label(plot, "Throughput");
 807
 808         tf = list_entry(all_traces.next, struct trace_file, list);
 809
 810         scale_line_graph_bytes(&max, &units, 1024);
 811         sprintf(line, "%sB/s", units);
 812         set_ylabel(plot, line);
 813         set_yticks(plot, num_yticks, 0, max, "");
 814         set_xticks(plot, num_xticks, min_seconds, max_seconds);
 815
 816         list_for_each_entry(tf, &all_traces, list) {
 817                 if (tf->tput_writes_gld->max > 0) {
 818                         svg_line_graph(plot, tf->tput_writes_gld, tf->writes_color, 0, 0);
 819                         if (with_legend)
 820                                 svg_add_legend(plot, tf->label, "Writes", tf->writes_color);
 821                 }
 822                 if (tf->tput_reads_gld->max > 0) {
 823                         svg_line_graph(plot, tf->tput_reads_gld, tf->reads_color, 0, 0);
 824                         if (with_legend)
 825                                 svg_add_legend(plot, tf->label, "Reads", tf->reads_color);
 826                 }
 827         }
 828
 829         if (plot->add_xlabel)
 830                 set_xlabel(plot, "Time (seconds)");
 831
 832         if (with_legend)
 833                 svg_write_legend(plot);
 834
 835         close_plot(plot);
 836         total_graphs_written++;
 837 }
 838
 839 static void plot_fio_tput(struct plot *plot, int min_seconds, int max_seconds)
 840 {
 841         struct trace_file *tf;
 842         char *units;
 843         char line[128];
 844         u64 max = 0;
 845
 846         if (num_fio_traces == 0 || active_graphs[FIO_GRAPH_INDEX] == 0)
 847                 return;
 848
 849         if (num_fio_traces > 1)
 850                 svg_alloc_legend(plot, num_fio_traces);
 851
 852         list_for_each_entry(tf, &fio_traces, list) {
 853                 if (tf->fio_gld->max > max)
 854                         max = tf->fio_gld->max;
 855         }
 856
 857         list_for_each_entry(tf, &fio_traces, list) {
 858                 if (tf->fio_gld->max > 0)
 859                         tf->fio_gld->max = max;
 860         }
 861
 862         setup_axis(plot);
 863         set_plot_label(plot, "Fio Throughput");
 864
 865         tf = list_entry(all_traces.next, struct trace_file, list);
 866
 867         scale_line_graph_bytes(&max, &units, 1024);
 868         sprintf(line, "%sB/s", units);
 869         set_ylabel(plot, line);
 870         set_yticks(plot, num_yticks, 0, max, "");
 871
 872         set_xticks(plot, num_xticks, min_seconds, max_seconds);
 873         list_for_each_entry(tf, &fio_traces, list) {
 874                 if (tf->fio_gld->max > 0) {
 875                         svg_line_graph(plot, tf->fio_gld, tf->line_color, 0, 0);
 876                         if (num_fio_traces > 1)
 877                                 svg_add_legend(plot, tf->label, "", tf->line_color);
 878                 }
 879         }
 880
 881         if (plot->add_xlabel)
 882                 set_xlabel(plot, "Time (seconds)");
 883
 884         if (num_fio_traces > 1)
 885                 svg_write_legend(plot);
 886         close_plot(plot);
 887         total_graphs_written++;
 888 }
 889
 890 static void plot_cpu(struct plot *plot, int max_seconds, char *label,
 891                      int active_index, int gld_index)
 892 {
 893         struct trace_file *tf;
 894         int max = 0;
 895         int i;
 896         int gld_i;
 897         char *color;
 898         double avg = 0;
 899         int ymax;
 900         int plotted = 0;
 901
 902         if (active_graphs[active_index] == 0)
 903                 return;
 904
 905         list_for_each_entry(tf, &all_traces, list) {
 906                 if (tf->trace->mpstat_num_cpus > max)
 907                         max = tf->trace->mpstat_num_cpus;
 908         }
 909         if (max == 0)
 910                 return;
 911
 912         tf = list_entry(all_traces.next, struct trace_file, list);
 913
 914         ymax = tf->mpstat_gld[gld_index]->max;
 915         if (ymax == 0)
 916                 return;
 917
 918         svg_alloc_legend(plot, num_traces * max);
 919
 920         setup_axis(plot);
 921         set_plot_label(plot, label);
 922
 923         max_seconds = tf->mpstat_max_seconds;
 924
 925         set_yticks(plot, num_yticks, 0, tf->mpstat_gld[gld_index]->max, "");
 926         set_ylabel(plot, "Percent");
 927         set_xticks(plot, num_xticks, tf->mpstat_min_seconds, max_seconds);
 928
 929         reset_cpu_color();
 930         list_for_each_entry(tf, &all_traces, list) {
 931                 if (tf->mpstat_gld == 0)
 932                         break;
 933                 for (i = tf->mpstat_gld[0]->min_seconds;
 934                      i < tf->mpstat_gld[0]->stop_seconds; i++) {
 935                         if (tf->mpstat_gld[gld_index]->data[i].count) {
 936                                 avg += (tf->mpstat_gld[gld_index]->data[i].sum /
 937                                         tf->mpstat_gld[gld_index]->data[i].count);
 938                         }
 939                 }
 940                 avg /= tf->mpstat_gld[gld_index]->stop_seconds -
 941                        tf->mpstat_gld[gld_index]->min_seconds;
 942                 color = pick_cpu_color();
 943                 svg_line_graph(plot, tf->mpstat_gld[0], color, 0, 0);
 944                 svg_add_legend(plot, tf->label, " avg", color);
 945
 946                 for (i = 1; i < tf->trace->mpstat_num_cpus + 1; i++) {
 947                         struct graph_line_data *gld = tf->mpstat_gld[i * MPSTAT_GRAPHS + gld_index];
 948                         double this_avg = 0;
 949
 950                         for (gld_i = gld->min_seconds;
 951                              gld_i < gld->stop_seconds; gld_i++) {
 952                                 if (gld->data[i].count) {
 953                                         this_avg += gld->data[i].sum /
 954                                                 gld->data[i].count;
 955                                 }
 956                         }
 957
 958                         this_avg /= gld->stop_seconds - gld->min_seconds;
 959
 960                         for (gld_i = gld->min_seconds;
 961                              gld_i < gld->stop_seconds; gld_i++) {
 962                                 double val;
 963
 964                                 if (gld->data[gld_i].count == 0)
 965                                         continue;
 966                                 val = (double)gld->data[gld_i].sum /
 967                                         gld->data[gld_i].count;
 968
 969                                 if (this_avg > avg + 30 || val > 95) {
 970                                         color = pick_cpu_color();
 971                                         svg_line_graph(plot, gld, color, avg + 30, 95);
 972                                         snprintf(line, line_len, " CPU %d\n", i - 1);
 973                                         svg_add_legend(plot, tf->label, line, color);
 974                                         plotted++;
 975                                         break;
 976                                 }
 977
 978                         }
 979                 }
 980         }
 981
 982         if (plot->add_xlabel)
 983                 set_xlabel(plot, "Time (seconds)");
 984
 985         if (!plot->no_legend) {
 986                 svg_write_legend(plot);
 987                 svg_free_legend(plot);
 988         }
 989         close_plot(plot);
 990         total_graphs_written++;
 991 }
 992
 993 static void plot_queue_depth(struct plot *plot, int min_seconds, int max_seconds)
 994 {
 995         struct trace_file *tf;
 996
 997         if (active_graphs[QUEUE_DEPTH_GRAPH_INDEX] == 0)
 998                 return;
 999
1000         setup_axis(plot);
1001         set_plot_label(plot, "Queue Depth");
1002         if (num_traces > 1)
1003                 svg_alloc_legend(plot, num_traces);
1004
1005         tf = list_entry(all_traces.next, struct trace_file, list);
1006         set_ylabel(plot, "Pending IO");
1007         set_yticks(plot, num_yticks, 0, tf->queue_depth_gld->max, "");
1008         set_xticks(plot, num_xticks, min_seconds, max_seconds);
1009
1010         list_for_each_entry(tf, &all_traces, list) {
1011                 svg_line_graph(plot, tf->queue_depth_gld, tf->line_color, 0, 0);
1012                 if (num_traces > 1)
1013                         svg_add_legend(plot, tf->label, "", tf->line_color);
1014         }
1015
1016         if (plot->add_xlabel)
1017                 set_xlabel(plot, "Time (seconds)");
1018         if (num_traces > 1)
1019                 svg_write_legend(plot);
1020         close_plot(plot);
1021         total_graphs_written++;
1022 }
1023
1024 static void convert_movie_files(char *movie_dir)
1025 {
1026         fprintf(stderr, "Converting svg files in %s\n", movie_dir);
1027         snprintf(line, line_len, "find %s -name \\*.svg | xargs -I{} -n 1 -P 8 rsvg-convert -o {}.png {}",
1028                  movie_dir);
1029         system(line);
1030 }
1031
1032 static void mencode_movie(char *movie_dir)
1033 {
1034         fprintf(stderr, "Creating movie %s with ffmpeg\n", movie_dir);
1035         snprintf(line, line_len, "ffmpeg -r 20 -y -i %s/%%10d-%s.svg.png -b:v 250k "
1036                  "-vcodec %s %s", movie_dir, output_filename, ffmpeg_codec,
1037                  output_filename);
1038         system(line);
1039 }
1040
1041 static void tencode_movie(char *movie_dir)
1042 {
1043         fprintf(stderr, "Creating movie %s with png2theora\n", movie_dir);
1044         snprintf(line, line_len, "png2theora -o %s %s/%%010d-%s.svg.png",
1045                         output_filename, movie_dir, output_filename);
1046         system(line);
1047 }
1048
1049 static void encode_movie(char *movie_dir)
1050 {
1051         char *last_dot = strrchr(output_filename, '.');
1052
1053         if (last_dot &&
1054             (!strncmp(last_dot, ".ogg", 4) || !strncmp(last_dot, ".ogv", 4))) {
1055                 tencode_movie(movie_dir);
1056         } else
1057                 mencode_movie(movie_dir);
1058 }
1059
1060 static void cleanup_movie(char *movie_dir)
1061 {
1062         if (keep_movie_svgs) {
1063                 fprintf(stderr, "Keeping movie dir %s\n", movie_dir);
1064                 return;
1065         }
1066         fprintf(stderr, "Removing movie dir %s\n", movie_dir);
1067         snprintf(line, line_len, "rm %s/*", movie_dir);
1068         system(line);
1069
1070         snprintf(line, line_len, "rmdir %s", movie_dir);
1071         system(line);
1072 }
1073
1074 static void plot_io_movie(struct plot *plot)
1075 {
1076         struct trace_file *tf;
1077         char *movie_dir = create_movie_temp_dir();
1078         int i, pid;
1079         struct plot_history *history;
1080         int batch_i;
1081         int movie_len = 30;
1082         int movie_frames_per_sec = 20;
1083         int total_frames = movie_len * movie_frames_per_sec;
1084         int rows, cols;
1085         int batch_count;
1086         int graph_width_factor = 5;
1087         int orig_y_offset;
1088
1089         get_graph_size(&cols, &rows);
1090         batch_count = cols / total_frames;
1091
1092         if (batch_count == 0)
1093                 batch_count = 1;
1094
1095         list_for_each_entry(tf, &all_traces, list) {
1096                 char label[256];
1097                 char *pos;
1098
1099                 if (!tf->label)
1100                         label[0] = 0;
1101                 else {
1102                         strcpy(label, tf->label);
1103                         if (io_per_process)
1104                                 strcat(label, " ");
1105                 }
1106                 pos = label + strlen(label);
1107
1108                 i = 0;
1109                 while (i < cols) {
1110                         snprintf(line, line_len, "%s/%010d-%s.svg", movie_dir, i, output_filename);
1111                         set_plot_output(plot, line);
1112                         set_plot_title(plot, graph_title);
1113                         orig_y_offset = plot->start_y_offset;
1114
1115                         plot->no_legend = 1;
1116
1117                         set_graph_size(cols / graph_width_factor, rows / 8);
1118                         plot->timeline = i / graph_width_factor;
1119
1120                         plot_tput(plot, tf->min_seconds, tf->max_seconds, 0);
1121
1122                         plot_cpu(plot, tf->max_seconds,
1123                                    "CPU System Time", CPU_SYS_GRAPH_INDEX, MPSTAT_SYS);
1124
1125                         plot->direction = PLOT_ACROSS;
1126                         plot_queue_depth(plot, tf->min_seconds, tf->max_seconds);
1127
1128                         /* movie graph starts here */
1129                         plot->start_y_offset = orig_y_offset;
1130                         set_graph_size(cols - cols / graph_width_factor, rows);
1131                         plot->no_legend = 0;
1132                         plot->timeline = 0;
1133                         plot->direction = PLOT_DOWN;;
1134
1135                         if (movie_style == MOVIE_SPINDLE)
1136                                 setup_axis_spindle(plot);
1137                         else
1138                                 setup_axis(plot);
1139
1140                         svg_alloc_legend(plot, count_io_plot_types() * 2);
1141
1142                         history = alloc_plot_history(tf);
1143                         history->col = i;
1144
1145                         for (pid = 0; pid < tf->io_plots; pid++) {
1146                                 if (tf->gdd_reads[pid]) {
1147                                         if (io_per_process)
1148                                                 strcpy(pos, tf->gdd_reads[pid]->label);
1149                                         svg_add_legend(plot, label, " Reads", tf->gdd_reads[pid]->color);
1150                                 }
1151                                 if (tf->gdd_writes[pid]) {
1152                                         if (io_per_process)
1153                                                 strcpy(pos, tf->gdd_writes[pid]->label);
1154                                         svg_add_legend(plot, label, " Writes", tf->gdd_writes[pid]->color);
1155                                 }
1156                         }
1157
1158                         batch_i = 0;
1159                         while (i < cols && batch_i < batch_count) {
1160                                 for (pid = 0; pid < tf->io_plots; pid++) {
1161                                         if (tf->gdd_reads[pid]) {
1162                                                 svg_io_graph_movie(tf->gdd_reads[pid],
1163                                                                    history->read_pid_history[pid],
1164                                                                    i);
1165                                         }
1166                                         if (tf->gdd_writes[pid]) {
1167                                                 svg_io_graph_movie(tf->gdd_writes[pid],
1168                                                                    history->write_pid_history[pid],
1169                                                                    i);
1170                                         }
1171                                 }
1172                                 i++;
1173                                 batch_i++;
1174                         }
1175
1176                         add_history(history, &movie_history);
1177
1178                         plot_movie_history(plot, &movie_history);
1179
1180                         svg_write_legend(plot);
1181                         close_plot(plot);
1182                         close_plot(plot);
1183
1184                         close_plot_file(plot);
1185                 }
1186                 free_all_plot_history(&movie_history);
1187         }
1188         convert_movie_files(movie_dir);
1189         encode_movie(movie_dir);
1190         cleanup_movie(movie_dir);
1191         free(movie_dir);
1192 }
1193
1194 static void plot_latency(struct plot *plot, int min_seconds, int max_seconds)
1195 {
1196         struct trace_file *tf;
1197         char *units;
1198         char line[128];
1199         u64 max = 0;
1200
1201         if (active_graphs[LATENCY_GRAPH_INDEX] == 0)
1202                 return;
1203
1204         if (num_traces > 1)
1205                 svg_alloc_legend(plot, num_traces);
1206
1207         list_for_each_entry(tf, &all_traces, list) {
1208                 if (tf->latency_gld->max > max)
1209                         max = tf->latency_gld->max;
1210         }
1211
1212         list_for_each_entry(tf, &all_traces, list)
1213                 tf->latency_gld->max = max;
1214
1215         setup_axis(plot);
1216         set_plot_label(plot, "IO Latency");
1217
1218         tf = list_entry(all_traces.next, struct trace_file, list);
1219
1220         scale_line_graph_time(&max, &units);
1221         sprintf(line, "latency (%ss)", units);
1222         set_ylabel(plot, line);
1223         set_yticks(plot, num_yticks, 0, max, "");
1224         set_xticks(plot, num_xticks, min_seconds, max_seconds);
1225
1226         list_for_each_entry(tf, &all_traces, list) {
1227                 svg_line_graph(plot, tf->latency_gld, tf->line_color, 0, 0);
1228                 if (num_traces > 1)
1229                         svg_add_legend(plot, tf->label, "", tf->line_color);
1230         }
1231
1232         if (plot->add_xlabel)
1233                 set_xlabel(plot, "Time (seconds)");
1234         if (num_traces > 1)
1235                 svg_write_legend(plot);
1236         close_plot(plot);
1237         total_graphs_written++;
1238 }
1239
1240 static void plot_iops(struct plot *plot, int min_seconds, int max_seconds)
1241 {
1242         struct trace_file *tf;
1243         char *units;
1244         u64 max = 0;
1245
1246         if (active_graphs[IOPS_GRAPH_INDEX] == 0)
1247                 return;
1248
1249         list_for_each_entry(tf, &all_traces, list) {
1250                 if (tf->iop_gld->max > max)
1251                         max = tf->iop_gld->max;
1252         }
1253
1254         list_for_each_entry(tf, &all_traces, list)
1255                 tf->iop_gld->max = max;
1256
1257         setup_axis(plot);
1258         set_plot_label(plot, "IOPs");
1259         if (num_traces > 1)
1260                 svg_alloc_legend(plot, num_traces);
1261
1262         tf = list_entry(all_traces.next, struct trace_file, list);
1263
1264         scale_line_graph_bytes(&max, &units, 1000);
1265         set_ylabel(plot, "IO/s");
1266
1267         set_yticks(plot, num_yticks, 0, max, units);
1268         set_xticks(plot, num_xticks, min_seconds, max_seconds);
1269
1270         list_for_each_entry(tf, &all_traces, list) {
1271                 svg_line_graph(plot, tf->iop_gld, tf->line_color, 0, 0);
1272                 if (num_traces > 1)
1273                         svg_add_legend(plot, tf->label, "", tf->line_color);
1274         }
1275
1276         if (plot->add_xlabel)
1277                 set_xlabel(plot, "Time (seconds)");
1278         if (num_traces > 1)
1279                 svg_write_legend(plot);
1280
1281         close_plot(plot);
1282         total_graphs_written++;
1283 }
1284
1285 static void check_plot_columns(struct plot *plot, int index)
1286 {
1287         int count;
1288
1289         if (columns > 1 && (total_graphs_written == 0 ||
1290             total_graphs_written % columns != 0)) {
1291                 count = graphs_left(index);
1292                 if (plot->direction == PLOT_DOWN) {
1293                         plot->start_x_offset = 0;
1294                         if (count <= columns)
1295                                 plot->add_xlabel = 1;
1296                 }
1297                 plot->direction = PLOT_ACROSS;
1298
1299         } else {
1300                 plot->direction = PLOT_DOWN;
1301                 if (index == last_active_graph)
1302                         plot->add_xlabel = 1;
1303         }
1304
1305 }
1306
1307 enum {
1308         HELP_LONG_OPT = 1,
1309 };
1310
1311 char *option_string = "F:T:t:o:l:r:O:N:d:D:p:m::h:w:c:x:y:a:C:PK";
1312 static struct option long_options[] = {
1313         {"columns", required_argument, 0, 'c'},
1314         {"fio-trace", required_argument, 0, 'F'},
1315         {"title", required_argument, 0, 'T'},
1316         {"trace", required_argument, 0, 't'},
1317         {"output", required_argument, 0, 'o'},
1318         {"label", required_argument, 0, 'l'},
1319         {"rolling", required_argument, 0, 'r'},
1320         {"no-graph", required_argument, 0, 'N'},
1321         {"only-graph", required_argument, 0, 'O'},
1322         {"device", required_argument, 0, 'd'},
1323         {"blktrace-destination", required_argument, 0, 'D'},
1324         {"prog", required_argument, 0, 'p'},
1325         {"movie", optional_argument, 0, 'm'},
1326         {"codec", optional_argument, 0, 'C'},
1327         {"keep-movie-svgs", no_argument, 0, 'K'},
1328         {"width", required_argument, 0, 'w'},
1329         {"height", required_argument, 0, 'h'},
1330         {"xzoom", required_argument, 0, 'x'},
1331         {"yzoom", required_argument, 0, 'y'},
1332         {"io-plot-action", required_argument, 0, 'a'},
1333         {"per-process-io", no_argument, 0, 'P'},
1334         {"help", no_argument, 0, HELP_LONG_OPT},
1335         {0, 0, 0, 0}
1336 };
1337
1338 static void print_usage(void)
1339 {
1340         fprintf(stderr, "iowatcher usage:\n"
1341                 "\t-d (--device): device for blktrace to trace\n"
1342                 "\t-D (--blktrace-destination): destination for blktrace\n"
1343                 "\t-t (--trace): trace file name (more than one allowed)\n"
1344                 "\t-F (--fio-trace): fio bandwidth trace (more than one allowed)\n"
1345                 "\t-l (--label): trace label in the graph\n"
1346                 "\t-o (--output): output file name (SVG only)\n"
1347                 "\t-p (--prog): program to run while blktrace is run\n"
1348                 "\t-K (--keep-movie-svgs keep svgs generated for movie mode\n"
1349                 "\t-m (--movie [=spindle|rect]): create IO animations\n"
1350                 "\t-C (--codec): ffmpeg codec. Use ffmpeg -codecs to list\n"
1351                 "\t-r (--rolling): number of seconds in the rolling averge\n"
1352                 "\t-T (--title): graph title\n"
1353                 "\t-N (--no-graph): skip a single graph (io, tput, latency, queue_depth, \n"
1354                 "\t\t\tiops, cpu-sys, cpu-io, cpu-irq cpu-soft cpu-user)\n"
1355                 "\t-O (--only-graph): add a single graph to the output\n"
1356                 "\t-h (--height): set the height of each graph\n"
1357                 "\t-w (--width): set the width of each graph\n"
1358                 "\t-c (--columns): numbers of columns in graph output\n"
1359                 "\t-x (--xzoom): limit processed time to min:max\n"
1360                 "\t-y (--yzoom): limit processed sectors to min:max\n"
1361                 "\t-a (--io-plot-action): plot given action (one of Q,D,C) in IO graph\n"
1362                 "\t-P (--per-process-io): distinguish between processes in IO graph\n"
1363                );
1364         exit(1);
1365 }
1366
1367 static int parse_double_range(char *str, double *min, double *max)
1368 {
1369         char *end;
1370
1371         /* Empty lower bound - leave original value */
1372         if (str[0] != ':') {
1373                 *min = strtod(str, &end);
1374                 if (*min == HUGE_VAL || *min == -HUGE_VAL)
1375                         return -ERANGE;
1376                 if (*end != ':')
1377                         return -EINVAL;
1378         } else
1379                 end = str;
1380         /* Empty upper bound - leave original value */
1381         if (end[1]) {
1382                 *max = strtod(end+1, &end);
1383                 if (*max == HUGE_VAL || *max == -HUGE_VAL)
1384                         return -ERANGE;
1385                 if (*end != 0)
1386                         return -EINVAL;
1387         }
1388         if (*min > *max)
1389                 return -EINVAL;
1390         return 0;
1391 }
1392
1393 static int parse_ull_range(char *str, unsigned long long *min,
1394                            unsigned long long *max)
1395 {
1396         char *end;
1397
1398         /* Empty lower bound - leave original value */
1399         if (str[0] != ':') {
1400                 *min = strtoull(str, &end, 10);
1401                 if (*min == ULLONG_MAX && errno == ERANGE)
1402                         return -ERANGE;
1403                 if (*end != ':')
1404                         return -EINVAL;
1405         } else
1406                 end = str;
1407         /* Empty upper bound - leave original value */
1408         if (end[1]) {
1409                 *max = strtoull(end+1, &end, 10);
1410                 if (*max == ULLONG_MAX && errno == ERANGE)
1411                         return -ERANGE;
1412                 if (*end != 0)
1413                         return -EINVAL;
1414         }
1415         if (*min > *max)
1416                 return -EINVAL;
1417         return 0;
1418 }
1419
1420 static int parse_options(int ac, char **av)
1421 {
1422         int c;
1423         int disabled = 0;
1424
1425         while (1) {
1426                 // int this_option_optind = optind ? optind : 1;
1427                 int option_index = 0;
1428
1429                 c = getopt_long(ac, av, option_string,
1430                                 long_options, &option_index);
1431
1432                 if (c == -1)
1433                         break;
1434
1435                 switch(c) {
1436                 case 'T':
1437                         graph_title = strdup(optarg);
1438                         break;
1439                 case 't':
1440                         add_trace_file(optarg);
1441                         set_blktrace_outfile(optarg);
1442                         break;
1443                 case 'F':
1444                         add_fio_trace_file(optarg);
1445                         break;
1446                 case 'o':
1447                         output_filename = strdup(optarg);
1448                         break;
1449                 case 'l':
1450                         set_trace_label(optarg);
1451                         break;
1452                 case 'r':
1453                         set_rolling_avg(atoi(optarg));
1454                         break;
1455                 case 'O':
1456                         if (!disabled) {
1457                                 disable_all_graphs();
1458                                 disabled = 1;
1459                         }
1460                         enable_one_graph(optarg);
1461                         break;
1462                 case 'N':
1463                         disable_one_graph(optarg);
1464                         break;
1465                 case 'd':
1466                         if (num_blktrace_devices == MAX_DEVICES_PER_TRACE - 1) {
1467                                 fprintf(stderr, "Too many blktrace devices provided\n");
1468                                 exit(1);
1469                         }
1470                         blktrace_devices[num_blktrace_devices++] = strdup(optarg);
1471                         break;
1472                 case 'D':
1473                         blktrace_dest_dir = strdup(optarg);
1474                         if (!strcmp(blktrace_dest_dir, "")) {
1475                                 fprintf(stderr, "Need a directory\n");
1476                                 print_usage();
1477                         }
1478                         break;
1479                 case 'p':
1480                         program_to_run = strdup(optarg);
1481                         break;
1482                 case 'K':
1483                         keep_movie_svgs = 1;
1484                         break;
1485                 case 'm':
1486                         make_movie = 1;
1487                         if (optarg) {
1488                                 movie_style = lookup_movie_style(optarg);
1489                                 if (movie_style < 0) {
1490                                         fprintf(stderr, "Unknown movie style %s\n", optarg);
1491                                         print_usage();
1492                                 }
1493                         }
1494                         fprintf(stderr, "Using movie style: %s\n",
1495                                 movie_styles[movie_style]);
1496                         break;
1497                 case 'C':
1498                         ffmpeg_codec = strdup(optarg);
1499                         break;
1500                 case 'h':
1501                         opt_graph_height = atoi(optarg);
1502                         break;
1503                 case 'w':
1504                         opt_graph_width = atoi(optarg);
1505                         break;
1506                 case 'c':
1507                         columns = atoi(optarg);
1508                         break;
1509                 case 'x':
1510                         if (parse_double_range(optarg, &min_time, &max_time)
1511                             < 0) {
1512                                 fprintf(stderr, "Cannot parse time range %s\n",
1513                                         optarg);
1514                                 exit(1);
1515                         }
1516                         break;
1517                 case 'y':
1518                         if (parse_ull_range(optarg, &min_mb, &max_mb)
1519                             < 0) {
1520                                 fprintf(stderr,
1521                                         "Cannot parse offset range %s\n",
1522                                         optarg);
1523                                 exit(1);
1524                         }
1525                         if (max_mb > ULLONG_MAX >> 20) {
1526                                 fprintf(stderr,
1527                                         "Upper range limit too big."
1528                                         " Maximum is %llu.\n", ULLONG_MAX >> 20);
1529                                 exit(1);
1530                         }
1531                         break;
1532                 case 'a':
1533                         if (strlen(optarg) != 1) {
1534 action_err:
1535                                 fprintf(stderr, "Action must be one of Q, D, C.");
1536                                 exit(1);
1537                         }
1538                         plot_io_action = action_char_to_num(optarg[0]);
1539                         if (plot_io_action < 0)
1540                                 goto action_err;
1541                         break;
1542                 case 'P':
1543                         io_per_process = 1;
1544                         break;
1545                 case '?':
1546                 case HELP_LONG_OPT:
1547                         print_usage();
1548                         break;
1549                 default:
1550                         break;
1551                 }
1552         }
1553         return 0;
1554 }
1555
1556 static void dest_mkdir(char *dir)
1557 {
1558         int ret;
1559
1560         ret = mkdir(dir, 0777);
1561         if (ret && errno != EEXIST) {
1562                 fprintf(stderr, "failed to mkdir error %s\n", strerror(errno));
1563                 exit(errno);
1564         }
1565 }
1566
1567 int main(int ac, char **av)
1568 {
1569         struct plot *plot;
1570         int min_seconds = 0;
1571         int max_seconds = 0;
1572         u64 max_offset = 0;
1573         u64 min_offset = ~(u64)0;
1574         struct trace_file *tf;
1575         int ret;
1576         int rows, cols;
1577
1578         init_io_hash_table();
1579         init_process_hash_table();
1580
1581         enable_all_graphs();
1582
1583         parse_options(ac, av);
1584
1585         last_active_graph = last_graph();
1586         if (make_movie) {
1587                 set_io_graph_scale(256);
1588                 if (movie_style == MOVIE_SPINDLE)
1589                         set_graph_size(750, 550);
1590                 else
1591                         set_graph_size(700, 400);
1592
1593                 /*
1594                  * the plots in the movie don't have a seconds
1595                  * line yet, this makes us skip it
1596                  */
1597                 last_active_graph = TOTAL_GRAPHS + 1;
1598         }
1599         if (opt_graph_height)
1600                 set_graph_height(opt_graph_height);
1601
1602         if (opt_graph_width)
1603                 set_graph_width(opt_graph_width);
1604
1605         if (list_empty(&all_traces) && list_empty(&fio_traces)) {
1606                 fprintf(stderr, "No traces found, exiting\n");
1607                 exit(1);
1608         }
1609
1610         if (num_blktrace_devices) {
1611                 char *path;
1612
1613                 dest_mkdir(blktrace_dest_dir);
1614                 if (num_blktrace_devices > 1) {
1615                         snprintf(line, line_len, "%s/%s", blktrace_dest_dir,
1616                                  blktrace_outfile);
1617                         dest_mkdir(line);
1618                 }
1619
1620                 path = join_path(blktrace_dest_dir, blktrace_outfile);
1621
1622                 snprintf(line, line_len, "%s.dump", path);
1623                 unlink(line);
1624
1625                 ret = start_blktrace(blktrace_devices, num_blktrace_devices,
1626                                      blktrace_outfile, blktrace_dest_dir);
1627                 if (ret) {
1628                         fprintf(stderr, "exiting due to blktrace failure\n");
1629                         exit(1);
1630                 }
1631
1632                 start_mpstat(path);
1633                 if (program_to_run) {
1634                         ret = run_program(program_to_run);
1635                         if (ret) {
1636                                 fprintf(stderr, "failed to run %s\n",
1637                                         program_to_run);
1638                                 exit(1);
1639                         }
1640                         wait_for_tracers();
1641                 } else {
1642                         /* no program specified, just wait for
1643                          * blktrace to exit
1644                          */
1645                         wait_for_tracers();
1646                 }
1647                 free(path);
1648         }
1649
1650         /* step one, read all the traces */
1651         read_traces();
1652
1653         /* step two, find the maxes for time and offset */
1654         list_for_each_entry(tf, &all_traces, list)
1655                 compare_minmax_tf(tf, &max_seconds, &min_offset, &max_offset);
1656         list_for_each_entry(tf, &fio_traces, list)
1657                 compare_minmax_tf(tf, &max_seconds, &min_offset, &max_offset);
1658         min_seconds = min_time;
1659         if (max_seconds > max_time)
1660                 max_seconds = ceil(max_time);
1661         if (min_offset < min_mb << 20)
1662                 min_offset = min_mb << 20;
1663         if (max_offset > max_mb << 20)
1664                 max_offset = max_mb << 20;
1665
1666         /* push the max we found into all the tfs */
1667         set_all_minmax_tf(min_seconds, max_seconds, min_offset, max_offset);
1668
1669         /* alloc graphing structs for all the traces */
1670         setup_trace_file_graphs();
1671
1672         /* run through all the traces and read their events */
1673         read_trace_events();
1674
1675         pick_line_graph_color();
1676
1677         plot = alloc_plot();
1678
1679         if (make_movie) {
1680                 set_legend_width(longest_label + longest_proc_name + 1 + strlen("writes"));
1681                 plot_io_movie(plot);
1682                 exit(0);
1683         }
1684
1685         set_plot_output(plot, output_filename);
1686
1687         if (active_graphs[IO_GRAPH_INDEX] || found_mpstat)
1688                 set_legend_width(longest_label + longest_proc_name + 1 + strlen("writes"));
1689         else if (num_traces >= 1 || num_fio_traces >= 1)
1690                 set_legend_width(longest_label);
1691         else
1692                 set_legend_width(0);
1693
1694         get_graph_size(&cols, &rows);
1695         if (columns > 1)
1696                 plot->add_xlabel = 1;
1697         set_plot_title(plot, graph_title);
1698
1699         check_plot_columns(plot, IO_GRAPH_INDEX);
1700         plot_io(plot, min_seconds, max_seconds, min_offset, max_offset);
1701         plot->add_xlabel = 0;
1702
1703         if (columns > 1) {
1704                 set_graph_size(cols / columns, rows);
1705                 num_xticks /= columns;
1706                 if (num_xticks < 2)
1707                         num_xticks = 2;
1708         }
1709         if (rows <= 50)
1710                 num_yticks--;
1711
1712         check_plot_columns(plot, TPUT_GRAPH_INDEX);
1713         plot_tput(plot, min_seconds, max_seconds, 1);
1714
1715         check_plot_columns(plot, FIO_GRAPH_INDEX);
1716         plot_fio_tput(plot, min_seconds, max_seconds);
1717
1718         check_plot_columns(plot, CPU_IO_GRAPH_INDEX);
1719         plot_cpu(plot, max_seconds, "CPU IO Wait Time",
1720                  CPU_IO_GRAPH_INDEX, MPSTAT_IO);
1721
1722         check_plot_columns(plot, CPU_SYS_GRAPH_INDEX);
1723         plot_cpu(plot, max_seconds, "CPU System Time",
1724                  CPU_SYS_GRAPH_INDEX, MPSTAT_SYS);
1725
1726         check_plot_columns(plot, CPU_IRQ_GRAPH_INDEX);
1727         plot_cpu(plot, max_seconds, "CPU IRQ Time",
1728                  CPU_IRQ_GRAPH_INDEX, MPSTAT_IRQ);
1729
1730         check_plot_columns(plot, CPU_SOFT_GRAPH_INDEX);
1731         plot_cpu(plot, max_seconds, "CPU SoftIRQ Time",
1732                  CPU_SOFT_GRAPH_INDEX, MPSTAT_SOFT);
1733
1734         check_plot_columns(plot, CPU_USER_GRAPH_INDEX);
1735         plot_cpu(plot, max_seconds, "CPU User Time",
1736                  CPU_USER_GRAPH_INDEX, MPSTAT_USER);
1737
1738         check_plot_columns(plot, LATENCY_GRAPH_INDEX);
1739         plot_latency(plot, min_seconds, max_seconds);
1740
1741         check_plot_columns(plot, QUEUE_DEPTH_GRAPH_INDEX);
1742         plot_queue_depth(plot, min_seconds, max_seconds);
1743
1744         check_plot_columns(plot, IOPS_GRAPH_INDEX);
1745         plot_iops(plot, min_seconds, max_seconds);
1746
1747         /* once for all */
1748         close_plot(plot);
1749         close_plot_file(plot);
1750         return 0;
1751 }