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 #include <signal.h>
  37
  38 #include "plot.h"
  39 #include "blkparse.h"
  40 #include "list.h"
  41 #include "tracers.h"
  42 #include "mpstat.h"
  43 #include "fio.h"
  44
  45 LIST_HEAD(all_traces);
  46 LIST_HEAD(fio_traces);
  47
  48 static char line[1024];
  49 static int line_len = 1024;
  50 static int found_mpstat = 0;
  51 static int make_movie = 0;
  52 static int keep_movie_svgs = 0;
  53 static int opt_graph_width = 0;
  54 static int opt_graph_height = 0;
  55
  56 static int columns = 1;
  57 static int num_xticks = 9;
  58 static int num_yticks = 4;
  59
  60 static double min_time = 0;
  61 static double max_time = DBL_MAX;
  62 static unsigned long long min_mb = 0;
  63 static unsigned long long max_mb = ULLONG_MAX >> 20;
  64
  65 int plot_io_action = 0;
  66 int io_per_process = 0;
  67 unsigned int longest_proc_name = 0;
  68
  69 /*
  70  * this doesn't include the IO graph,
  71  * but it counts the other graphs as they go out
  72  */
  73 static int total_graphs_written = 1;
  74
  75 enum {
  76         IO_GRAPH_INDEX = 0,
  77         TPUT_GRAPH_INDEX,
  78         FIO_GRAPH_INDEX,
  79         CPU_SYS_GRAPH_INDEX,
  80         CPU_IO_GRAPH_INDEX,
  81         CPU_IRQ_GRAPH_INDEX,
  82         CPU_SOFT_GRAPH_INDEX,
  83         CPU_USER_GRAPH_INDEX,
  84         LATENCY_GRAPH_INDEX,
  85         QUEUE_DEPTH_GRAPH_INDEX,
  86         IOPS_GRAPH_INDEX,
  87         TOTAL_GRAPHS
  88 };
  89
  90 enum {
  91         MPSTAT_SYS = 0,
  92         MPSTAT_IRQ,
  93         MPSTAT_IO,
  94         MPSTAT_SOFT,
  95         MPSTAT_USER,
  96         MPSTAT_GRAPHS
  97 };
  98
  99 static char *graphs_by_name[] = {
 100         "io",
 101         "tput",
 102         "fio",
 103         "cpu-sys",
 104         "cpu-io",
 105         "cpu-irq",
 106         "cpu-soft",
 107         "cpu-user",
 108         "latency",
 109         "queue-depth",
 110         "iops",
 111 };
 112
 113 enum {
 114         MOVIE_SPINDLE,
 115         MOVIE_RECT,
 116         NUM_MOVIE_STYLES,
 117 };
 118
 119 char *movie_styles[] = {
 120         "spindle",
 121         "rect",
 122         NULL
 123 };
 124
 125 static int movie_style = 0;
 126
 127 static int lookup_movie_style(char *str)
 128 {
 129         int i;
 130
 131         for (i = 0; i < NUM_MOVIE_STYLES; i++) {
 132                 if (strcmp(str, movie_styles[i]) == 0)
 133                         return i;
 134         }
 135         return -1;
 136 }
 137
 138 static int active_graphs[TOTAL_GRAPHS];
 139 static int last_active_graph = IOPS_GRAPH_INDEX;
 140
 141 static int label_index = 0;
 142 static int num_traces = 0;
 143 static int num_fio_traces = 0;
 144 static int longest_label = 0;
 145
 146 static char *graph_title = "";
 147 static char *output_filename = "trace.svg";
 148 static char *blktrace_devices[MAX_DEVICES_PER_TRACE];
 149 static int num_blktrace_devices = 0;
 150 static char *blktrace_outfile = "trace";
 151 static char *blktrace_dest_dir = ".";
 152 static char **prog_argv = NULL;
 153 static int prog_argc = 0;
 154 static char *ffmpeg_codec = "libx264";
 155
 156 static void alloc_mpstat_gld(struct trace_file *tf)
 157 {
 158         struct graph_line_data **ptr;
 159
 160         if (tf->trace->mpstat_num_cpus == 0)
 161                 return;
 162
 163         ptr = calloc((tf->trace->mpstat_num_cpus + 1) * MPSTAT_GRAPHS,
 164                      sizeof(struct graph_line_data *));
 165         if (!ptr) {
 166                 perror("Unable to allocate mpstat arrays\n");
 167                 exit(1);
 168         }
 169         tf->mpstat_gld = ptr;
 170 }
 171
 172 static void enable_all_graphs(void)
 173 {
 174         int i;
 175         for (i = 0; i < TOTAL_GRAPHS; i++)
 176                 active_graphs[i] = 1;
 177 }
 178
 179 static void disable_all_graphs(void)
 180 {
 181         int i;
 182         for (i = 0; i < TOTAL_GRAPHS; i++)
 183                 active_graphs[i] = 0;
 184 }
 185
 186 static int enable_one_graph(char *name)
 187 {
 188         int i;
 189         for (i = 0; i < TOTAL_GRAPHS; i++) {
 190                 if (strcmp(name, graphs_by_name[i]) == 0) {
 191                         active_graphs[i] = 1;
 192                         return 0;
 193                 }
 194         }
 195         return -ENOENT;
 196 }
 197
 198 static int disable_one_graph(char *name)
 199 {
 200         int i;
 201         for (i = 0; i < TOTAL_GRAPHS; i++) {
 202                 if (strcmp(name, graphs_by_name[i]) == 0) {
 203                         active_graphs[i] = 0;
 204                         return 0;
 205                 }
 206         }
 207         return -ENOENT;
 208 }
 209
 210 static int last_graph(void)
 211 {
 212         int i;
 213         for (i = TOTAL_GRAPHS - 1; i >= 0; i--) {
 214                 if (active_graphs[i]) {
 215                         return i;
 216                 }
 217         }
 218         return -ENOENT;
 219 }
 220
 221 static int graphs_left(int cur)
 222 {
 223         int i;
 224         int left = 0;
 225         for (i = cur; i < TOTAL_GRAPHS; i++) {
 226                 if (active_graphs[i])
 227                         left++;
 228         }
 229         return left;
 230 }
 231
 232 static char * join_path(char *dest_dir, char *filename)
 233 {
 234         /* alloc 2 extra bytes for '/' and '\0' */
 235         char *path = malloc(strlen(dest_dir) + strlen(filename) + 2);
 236         sprintf(path, "%s%s%s", dest_dir, "/", filename);
 237
 238         return path;
 239 }
 240
 241 static void add_trace_file(char *filename)
 242 {
 243         struct trace_file *tf;
 244
 245         tf = calloc(1, sizeof(*tf));
 246         if (!tf) {
 247                 fprintf(stderr, "Unable to allocate memory\n");
 248                 exit(1);
 249         }
 250         tf->label = "";
 251         tf->filename = strdup(filename);
 252         list_add_tail(&tf->list, &all_traces);
 253         tf->line_color = "black";
 254         num_traces++;
 255 }
 256
 257 static void add_fio_trace_file(char *filename)
 258 {
 259         struct trace_file *tf;
 260
 261         tf = calloc(1, sizeof(*tf));
 262         if (!tf) {
 263                 fprintf(stderr, "Unable to allocate memory\n");
 264                 exit(1);
 265         }
 266         tf->label = "";
 267         tf->filename = strdup(filename);
 268         list_add_tail(&tf->list, &fio_traces);
 269         tf->line_color = pick_fio_color();
 270         tf->fio_trace = 1;
 271         num_fio_traces++;
 272 }
 273
 274 static void setup_trace_file_graphs(void)
 275 {
 276         struct trace_file *tf;
 277         int i;
 278         int alloc_ptrs;
 279
 280         if (io_per_process)
 281                 alloc_ptrs = 16;
 282         else
 283                 alloc_ptrs = 1;
 284
 285         list_for_each_entry(tf, &all_traces, list) {
 286                 tf->tput_reads_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 287                 tf->tput_writes_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 288                 tf->latency_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 289                 tf->queue_depth_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 290
 291                 tf->iop_gld = alloc_line_data(tf->min_seconds, tf->max_seconds, tf->stop_seconds);
 292                 tf->gdd_writes = calloc(alloc_ptrs, sizeof(struct graph_dot_data *));
 293                 tf->gdd_reads = calloc(alloc_ptrs, sizeof(struct graph_dot_data *));
 294                 tf->io_plots_allocated = alloc_ptrs;
 295
 296                 if (tf->trace->mpstat_num_cpus == 0)
 297                         continue;
 298
 299                 alloc_mpstat_gld(tf);
 300                 for (i = 0; i < (tf->trace->mpstat_num_cpus + 1) * MPSTAT_GRAPHS; i++) {
 301                         tf->mpstat_gld[i] =
 302                                 alloc_line_data(tf->mpstat_min_seconds,
 303                                                 tf->mpstat_max_seconds,
 304                                                 tf->mpstat_max_seconds);
 305                         tf->mpstat_gld[i]->max = 100;
 306                 }
 307         }
 308
 309         list_for_each_entry(tf, &fio_traces, list) {
 310                 if (tf->trace->fio_seconds > 0) {
 311                         tf->fio_gld = alloc_line_data(tf->min_seconds,
 312                                                       tf->max_seconds,
 313                                                       tf->stop_seconds);
 314                 }
 315         }
 316
 317 }
 318
 319 static void read_traces(void)
 320 {
 321         struct trace_file *tf;
 322         struct trace *trace;
 323         u64 last_time;
 324         u64 ymin;
 325         u64 ymax;
 326         u64 max_bank;
 327         u64 max_bank_offset;
 328         char *path = NULL;
 329
 330         list_for_each_entry(tf, &all_traces, list) {
 331                 if (num_blktrace_devices)
 332                         path = join_path(blktrace_dest_dir, tf->filename);
 333                 else
 334                         path = strdup(tf->filename);
 335
 336                 trace = open_trace(path);
 337                 if (!trace)
 338                         exit(1);
 339
 340                 last_time = find_last_time(trace);
 341                 tf->trace = trace;
 342                 tf->max_seconds = SECONDS(last_time) + 1;
 343                 tf->stop_seconds = SECONDS(last_time) + 1;
 344
 345                 find_extreme_offsets(trace, &tf->min_offset, &tf->max_offset,
 346                                     &max_bank, &max_bank_offset);
 347                 filter_outliers(trace, tf->min_offset, tf->max_offset, &ymin, &ymax);
 348                 tf->min_offset = ymin;
 349                 tf->max_offset = ymax;
 350
 351                 read_mpstat(trace, path);
 352                 tf->mpstat_stop_seconds = trace->mpstat_seconds;
 353                 tf->mpstat_max_seconds = trace->mpstat_seconds;
 354                 if (tf->mpstat_max_seconds)
 355                         found_mpstat = 1;
 356
 357                 free(path);
 358         }
 359
 360         list_for_each_entry(tf, &fio_traces, list) {
 361                 trace = open_fio_trace(tf->filename);
 362                 if (!trace)
 363                         exit(1);
 364                 tf->trace = trace;
 365                 tf->max_seconds = tf->trace->fio_seconds;
 366                 tf->stop_seconds = tf->trace->fio_seconds;
 367         }
 368 }
 369
 370 static void pick_line_graph_color(void)
 371 {
 372         struct trace_file *tf;
 373         int i;
 374
 375         list_for_each_entry(tf, &all_traces, list) {
 376                 for (i = 0; i < tf->io_plots; i++) {
 377                         if (tf->gdd_reads[i]) {
 378                                 tf->line_color = tf->gdd_reads[i]->color;
 379                                 tf->reads_color = tf->gdd_reads[i]->color;
 380                         }
 381                         if (tf->gdd_writes[i]) {
 382                                 tf->line_color = tf->gdd_writes[i]->color;
 383                                 tf->writes_color = tf->gdd_writes[i]->color;
 384                         }
 385                         if (tf->writes_color && tf->reads_color)
 386                                 break;
 387                 }
 388                 if (!tf->reads_color)
 389                         tf->reads_color = tf->line_color;
 390                 if (!tf->writes_color)
 391                         tf->writes_color = tf->line_color;
 392         }
 393 }
 394
 395 static void read_fio_events(struct trace_file *tf)
 396 {
 397         u64 bw = 0;
 398         int time = 0;
 399         int dir = 0;
 400         int ret;
 401
 402         first_fio(tf->trace);
 403         while (1) {
 404                 ret = read_fio_event(tf->trace, &time, &bw, &dir);
 405                 if (ret)
 406                         break;
 407
 408                 if (dir <= 1)
 409                         add_fio_gld(time, bw, tf->fio_gld);
 410                 if (next_fio_line(tf->trace))
 411                         break;
 412         }
 413 }
 414
 415 static void read_trace_events(void)
 416 {
 417
 418         struct trace_file *tf;
 419         struct trace *trace;
 420         int ret;
 421         int i;
 422         unsigned int time;
 423         double user, sys, iowait, irq, soft;
 424         double max_user = 0, max_sys = 0, max_iowait = 0,
 425                max_irq = 0, max_soft = 0;
 426
 427         list_for_each_entry(tf, &fio_traces, list)
 428                 read_fio_events(tf);
 429
 430         list_for_each_entry(tf, &all_traces, list) {
 431                 trace = tf->trace;
 432
 433                 first_record(trace);
 434                 do {
 435                         check_record(trace);
 436                         if (SECONDS(get_record_time(trace)) > tf->max_seconds)
 437                                 continue;
 438                         add_tput(trace, tf->tput_writes_gld, tf->tput_reads_gld);
 439                         add_iop(trace, tf->iop_gld);
 440                         add_io(trace, tf);
 441                         add_pending_io(trace, tf->queue_depth_gld);
 442                         add_completed_io(trace, tf->latency_gld);
 443                 } while (!(ret = next_record(trace)));
 444         }
 445         list_for_each_entry(tf, &all_traces, list) {
 446                 trace = tf->trace;
 447
 448                 if (trace->mpstat_num_cpus == 0)
 449                         continue;
 450
 451                 first_mpstat(trace);
 452
 453                 for (time = 0; time < tf->mpstat_stop_seconds; time++) {
 454                         for (i = 0; i < (trace->mpstat_num_cpus + 1) * MPSTAT_GRAPHS; i += MPSTAT_GRAPHS) {
 455                                 ret = read_mpstat_event(trace, &user, &sys,
 456                                                         &iowait, &irq, &soft);
 457                                 if (ret)
 458                                         goto mpstat_done;
 459                                 if (next_mpstat_line(trace))
 460                                         goto mpstat_done;
 461
 462                                 if (sys > max_sys)
 463                                         max_sys = sys;
 464                                 if (user > max_user)
 465                                         max_user = user;
 466                                 if (irq > max_irq)
 467                                         max_irq = irq;
 468                                 if (iowait > max_iowait)
 469                                         max_iowait = iowait;
 470
 471                                 add_mpstat_gld(time, sys, tf->mpstat_gld[i + MPSTAT_SYS]);
 472                                 add_mpstat_gld(time, irq, tf->mpstat_gld[i + MPSTAT_IRQ]);
 473                                 add_mpstat_gld(time, soft, tf->mpstat_gld[i + MPSTAT_SOFT]);
 474                                 add_mpstat_gld(time, user, tf->mpstat_gld[i + MPSTAT_USER]);
 475                                 add_mpstat_gld(time, iowait, tf->mpstat_gld[i + MPSTAT_IO]);
 476                         }
 477                         if (next_mpstat(trace) == NULL)
 478                                 break;
 479                 }
 480         }
 481
 482 mpstat_done:
 483         list_for_each_entry(tf, &all_traces, list) {
 484                 trace = tf->trace;
 485
 486                 if (trace->mpstat_num_cpus == 0)
 487                         continue;
 488
 489                 tf->mpstat_gld[MPSTAT_SYS]->max = max_sys;
 490                 tf->mpstat_gld[MPSTAT_IRQ]->max = max_irq;
 491                 tf->mpstat_gld[MPSTAT_SOFT]->max = max_soft;
 492                 tf->mpstat_gld[MPSTAT_USER]->max = max_user;
 493                 tf->mpstat_gld[MPSTAT_IO]->max = max_iowait;;
 494         }
 495         return;
 496 }
 497
 498 static void set_trace_label(char *label)
 499 {
 500         int cur = 0;
 501         struct trace_file *tf;
 502         int len = strlen(label);
 503
 504         if (len > longest_label)
 505                 longest_label = len;
 506
 507         list_for_each_entry(tf, &all_traces, list) {
 508                 if (cur == label_index) {
 509                         tf->label = strdup(label);
 510                         label_index++;
 511                         return;
 512                         break;
 513                 }
 514                 cur++;
 515         }
 516         list_for_each_entry(tf, &fio_traces, list) {
 517                 if (cur == label_index) {
 518                         tf->label = strdup(label);
 519                         label_index++;
 520                         break;
 521                 }
 522                 cur++;
 523         }
 524 }
 525
 526 static void set_blktrace_outfile(char *arg)
 527 {
 528         char *s = strdup(arg);
 529         char *last_dot = strrchr(s, '.');
 530
 531         if (last_dot) {
 532                 if (strcmp(last_dot, ".dump") == 0)
 533                         *last_dot = '\0';
 534         }
 535         blktrace_outfile = s;
 536 }
 537
 538
 539 static void compare_minmax_tf(struct trace_file *tf, unsigned int *max_seconds,
 540                               u64 *min_offset, u64 *max_offset)
 541 {
 542         if (tf->max_seconds > *max_seconds)
 543                 *max_seconds = tf->max_seconds;
 544         if (tf->max_offset > *max_offset)
 545                 *max_offset = tf->max_offset;
 546         if (tf->min_offset < *min_offset)
 547                 *min_offset = tf->min_offset;
 548 }
 549
 550 static void set_all_minmax_tf(unsigned int min_seconds,
 551                               unsigned int max_seconds,
 552                               u64 min_offset, u64 max_offset)
 553 {
 554         struct trace_file *tf;
 555         struct list_head *traces = &all_traces;
 556 again:
 557         list_for_each_entry(tf, traces, list) {
 558                 tf->min_seconds = min_seconds;
 559                 tf->max_seconds = max_seconds;
 560                 if (tf->stop_seconds > max_seconds)
 561                         tf->stop_seconds = max_seconds;
 562                 if (tf->mpstat_max_seconds) {
 563                         tf->mpstat_min_seconds = min_seconds;
 564                         tf->mpstat_max_seconds = max_seconds;
 565                         if (tf->mpstat_stop_seconds > max_seconds)
 566                                 tf->mpstat_stop_seconds = max_seconds;
 567                 }
 568                 tf->min_offset = min_offset;
 569                 tf->max_offset = max_offset;
 570         }
 571         if (traces == &all_traces) {
 572                 traces = &fio_traces;
 573                 goto again;
 574         }
 575 }
 576
 577 static struct pid_plot_history *alloc_pid_plot_history(char *color)
 578 {
 579         struct pid_plot_history *pph;
 580
 581         pph = calloc(1, sizeof(struct pid_plot_history));
 582         if (!pph) {
 583                 perror("memory allocation failed");
 584                 exit(1);
 585         }
 586         pph->history = malloc(sizeof(double) * 4096);
 587         if (!pph->history) {
 588                 perror("memory allocation failed");
 589                 exit(1);
 590         }
 591         pph->history_len = 4096;
 592         pph->color = color;
 593
 594         return pph;
 595 }
 596
 597 static struct plot_history *alloc_plot_history(struct trace_file *tf)
 598 {
 599         struct plot_history *ph = calloc(1, sizeof(struct plot_history));
 600         int i;
 601
 602         if (!ph) {
 603                 perror("memory allocation failed");
 604                 exit(1);
 605         }
 606         ph->read_pid_history = calloc(tf->io_plots, sizeof(struct pid_plot_history *));
 607         if (!ph->read_pid_history) {
 608                 perror("memory allocation failed");
 609                 exit(1);
 610         }
 611         ph->write_pid_history = calloc(tf->io_plots, sizeof(struct pid_plot_history *));
 612         if (!ph->write_pid_history) {
 613                 perror("memory allocation failed");
 614                 exit(1);
 615         }
 616         ph->pid_history_count = tf->io_plots;
 617         for (i = 0; i < tf->io_plots; i++) {
 618                 if (tf->gdd_reads[i])
 619                         ph->read_pid_history[i] = alloc_pid_plot_history(tf->gdd_reads[i]->color);
 620                 if (tf->gdd_writes[i])
 621                         ph->write_pid_history[i] = alloc_pid_plot_history(tf->gdd_writes[i]->color);
 622         }
 623         return ph;
 624 }
 625
 626 LIST_HEAD(movie_history);
 627 int num_histories = 0;
 628
 629 static void free_plot_history(struct plot_history *ph)
 630 {
 631         int pid;
 632
 633         for (pid = 0; pid < ph->pid_history_count; pid++) {
 634                 if (ph->read_pid_history[pid])
 635                         free(ph->read_pid_history[pid]);
 636                 if (ph->write_pid_history[pid])
 637                         free(ph->write_pid_history[pid]);
 638         }
 639         free(ph->read_pid_history);
 640         free(ph->write_pid_history);
 641         free(ph);
 642 }
 643
 644 static void add_history(struct plot_history *ph, struct list_head *list)
 645 {
 646         struct plot_history *entry;
 647
 648         list_add_tail(&ph->list, list);
 649         num_histories++;
 650
 651         if (num_histories > 12) {
 652                 num_histories--;
 653                 entry = list_entry(list->next, struct plot_history, list);
 654                 list_del(&entry->list);
 655                 free_plot_history(entry);
 656         }
 657 }
 658
 659 static void plot_movie_history(struct plot *plot, struct list_head *list)
 660 {
 661         struct plot_history *ph;
 662         int pid;
 663
 664         if (num_histories > 2)
 665                 rewind_spindle_steps(num_histories - 1);
 666
 667         list_for_each_entry(ph, list, list) {
 668                 for (pid = 0; pid < ph->pid_history_count; pid++) {
 669                         if (ph->read_pid_history[pid]) {
 670                                 if (movie_style == MOVIE_SPINDLE) {
 671                                         svg_io_graph_movie_array_spindle(plot,
 672                                                 ph->read_pid_history[pid]);
 673                                 } else {
 674                                         svg_io_graph_movie_array(plot,
 675                                                 ph->read_pid_history[pid]);
 676                                 }
 677                         }
 678                         if (ph->write_pid_history[pid]) {
 679                                 if (movie_style == MOVIE_SPINDLE) {
 680                                         svg_io_graph_movie_array_spindle(plot,
 681                                                 ph->write_pid_history[pid]);
 682                                 } else {
 683                                         svg_io_graph_movie_array(plot,
 684                                                 ph->write_pid_history[pid]);
 685                                 }
 686                         }
 687                 }
 688          }
 689 }
 690
 691 static void free_all_plot_history(struct list_head *head)
 692 {
 693         struct plot_history *entry;
 694
 695         while (!list_empty(head)) {
 696                 entry = list_entry(head->next, struct plot_history, list);
 697                 list_del(&entry->list);
 698                 free_plot_history(entry);
 699         }
 700 }
 701
 702 static int count_io_plot_types(void)
 703 {
 704         struct trace_file *tf;
 705         int i;
 706         int total_io_types = 0;
 707
 708         list_for_each_entry(tf, &all_traces, list) {
 709                 for (i = 0; i < tf->io_plots; i++) {
 710                         if (tf->gdd_reads[i])
 711                                 total_io_types++;
 712                         if (tf->gdd_writes[i])
 713                                 total_io_types++;
 714                 }
 715         }
 716         return total_io_types;
 717 }
 718
 719 static void plot_io_legend(struct plot *plot, struct graph_dot_data *gdd, char *prefix, char *rw)
 720 {
 721         int ret = 0;
 722         char *label = NULL;
 723         if (io_per_process)
 724                 ret = asprintf(&label, "%s %s", prefix, gdd->label);
 725         else
 726                 ret = asprintf(&label, "%s", prefix);
 727         if (ret < 0) {
 728                 perror("Failed to process labels");
 729                 exit(1);
 730         }
 731         svg_add_legend(plot, label, rw, gdd->color);
 732         free(label);
 733 }
 734
 735 static void plot_io(struct plot *plot, unsigned int min_seconds,
 736                     unsigned int max_seconds, u64 min_offset, u64 max_offset)
 737 {
 738         struct trace_file *tf;
 739         int i;
 740
 741         if (active_graphs[IO_GRAPH_INDEX] == 0)
 742                 return;
 743
 744         setup_axis(plot);
 745
 746         svg_alloc_legend(plot, count_io_plot_types() * 2);
 747
 748         set_plot_label(plot, "Device IO");
 749         set_ylabel(plot, "Offset (MB)");
 750         set_yticks(plot, num_yticks, min_offset / (1024 * 1024),
 751                    max_offset / (1024 * 1024), "");
 752         set_xticks(plot, num_xticks, min_seconds, max_seconds);
 753
 754         list_for_each_entry(tf, &all_traces, list) {
 755                 char *prefix = tf->label ? tf->label : "";
 756
 757                 for (i = 0; i < tf->io_plots; i++) {
 758                         if (tf->gdd_writes[i]) {
 759                                 svg_io_graph(plot, tf->gdd_writes[i]);
 760                                 plot_io_legend(plot, tf->gdd_writes[i], prefix, " Writes");
 761                         }
 762                         if (tf->gdd_reads[i]) {
 763                                 svg_io_graph(plot, tf->gdd_reads[i]);
 764                                 plot_io_legend(plot, tf->gdd_reads[i], prefix, " Reads");
 765                         }
 766                 }
 767         }
 768         if (plot->add_xlabel)
 769                 set_xlabel(plot, "Time (seconds)");
 770         svg_write_legend(plot);
 771         close_plot(plot);
 772 }
 773
 774 static void plot_tput(struct plot *plot, unsigned int min_seconds,
 775                       unsigned int max_seconds, int with_legend)
 776 {
 777         struct trace_file *tf;
 778         char *units;
 779         char line[128];
 780         u64 max = 0, val;
 781
 782         if (active_graphs[TPUT_GRAPH_INDEX] == 0)
 783                 return;
 784
 785         if (with_legend)
 786                 svg_alloc_legend(plot, num_traces * 2);
 787
 788         list_for_each_entry(tf, &all_traces, list) {
 789                 val = line_graph_roll_avg_max(tf->tput_writes_gld);
 790                 if (val > max)
 791                         max = val;
 792                 val = line_graph_roll_avg_max(tf->tput_reads_gld);
 793                 if (val > max)
 794                         max = val;
 795         }
 796         list_for_each_entry(tf, &all_traces, list) {
 797                 if (tf->tput_writes_gld->max > 0)
 798                         tf->tput_writes_gld->max = max;
 799                 if (tf->tput_reads_gld->max > 0)
 800                         tf->tput_reads_gld->max = max;
 801         }
 802
 803         setup_axis(plot);
 804         set_plot_label(plot, "Throughput");
 805
 806         tf = list_entry(all_traces.next, struct trace_file, list);
 807
 808         scale_line_graph_bytes(&max, &units, 1024);
 809         sprintf(line, "%sB/s", units);
 810         set_ylabel(plot, line);
 811         set_yticks(plot, num_yticks, 0, max, "");
 812         set_xticks(plot, num_xticks, min_seconds, max_seconds);
 813
 814         list_for_each_entry(tf, &all_traces, list) {
 815                 if (tf->tput_writes_gld->max > 0) {
 816                         svg_line_graph(plot, tf->tput_writes_gld, tf->writes_color, 0, 0);
 817                         if (with_legend)
 818                                 svg_add_legend(plot, tf->label, " Writes", tf->writes_color);
 819                 }
 820                 if (tf->tput_reads_gld->max > 0) {
 821                         svg_line_graph(plot, tf->tput_reads_gld, tf->reads_color, 0, 0);
 822                         if (with_legend)
 823                                 svg_add_legend(plot, tf->label, " Reads", tf->reads_color);
 824                 }
 825         }
 826
 827         if (plot->add_xlabel)
 828                 set_xlabel(plot, "Time (seconds)");
 829
 830         if (with_legend)
 831                 svg_write_legend(plot);
 832
 833         close_plot(plot);
 834         total_graphs_written++;
 835 }
 836
 837 static void plot_fio_tput(struct plot *plot,
 838                           unsigned int min_seconds, unsigned int max_seconds)
 839 {
 840         struct trace_file *tf;
 841         char *units;
 842         char line[128];
 843         u64 max = 0, val;
 844
 845         if (num_fio_traces == 0 || active_graphs[FIO_GRAPH_INDEX] == 0)
 846                 return;
 847
 848         if (num_fio_traces > 1)
 849                 svg_alloc_legend(plot, num_fio_traces);
 850
 851         list_for_each_entry(tf, &fio_traces, list) {
 852                 val = line_graph_roll_avg_max(tf->fio_gld);
 853                 if (val > max)
 854                         max = val;
 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, unsigned 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         unsigned 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 (gld_i = tf->mpstat_gld[0]->min_seconds;
 934                      gld_i < tf->mpstat_gld[0]->stop_seconds; gld_i++) {
 935                         if (tf->mpstat_gld[gld_index]->data[gld_i].count) {
 936                                 avg += (tf->mpstat_gld[gld_index]->data[gld_i].sum /
 937                                         tf->mpstat_gld[gld_index]->data[gld_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, unsigned int min_seconds,
 994                              unsigned int max_seconds)
 995 {
 996         struct trace_file *tf;
 997         u64 max = 0, val;
 998
 999         if (active_graphs[QUEUE_DEPTH_GRAPH_INDEX] == 0)
1000                 return;
1001
1002         setup_axis(plot);
1003         set_plot_label(plot, "Queue Depth");
1004         if (num_traces > 1)
1005                 svg_alloc_legend(plot, num_traces);
1006
1007         list_for_each_entry(tf, &all_traces, list) {
1008                 val = line_graph_roll_avg_max(tf->queue_depth_gld);
1009                 if (val > max)
1010                         max = val;
1011         }
1012
1013         list_for_each_entry(tf, &all_traces, list)
1014                 tf->queue_depth_gld->max = max;
1015
1016         set_ylabel(plot, "Pending IO");
1017         set_yticks(plot, num_yticks, 0, max, "");
1018         set_xticks(plot, num_xticks, min_seconds, max_seconds);
1019
1020         list_for_each_entry(tf, &all_traces, list) {
1021                 svg_line_graph(plot, tf->queue_depth_gld, tf->line_color, 0, 0);
1022                 if (num_traces > 1)
1023                         svg_add_legend(plot, tf->label, "", tf->line_color);
1024         }
1025
1026         if (plot->add_xlabel)
1027                 set_xlabel(plot, "Time (seconds)");
1028         if (num_traces > 1)
1029                 svg_write_legend(plot);
1030         close_plot(plot);
1031         total_graphs_written++;
1032 }
1033
1034 static void system_check(const char *cmd)
1035 {
1036         if (system(cmd) < 0) {
1037                 int err = errno;
1038
1039                 fprintf(stderr, "system exec failed (%d): %s\n", err, cmd);
1040                 exit(1);
1041         }
1042 }
1043
1044 static void convert_movie_files(char *movie_dir)
1045 {
1046         fprintf(stderr, "Converting svg files in %s\n", movie_dir);
1047         snprintf(line, line_len, "find %s -name \\*.svg | xargs -I{} -n 1 -P 8 rsvg-convert -o {}.png {}",
1048                  movie_dir);
1049         system_check(line);
1050 }
1051
1052 static void mencode_movie(char *movie_dir)
1053 {
1054         fprintf(stderr, "Creating movie %s with ffmpeg\n", movie_dir);
1055         snprintf(line, line_len, "ffmpeg -r 20 -y -i %s/%%10d-%s.svg.png -b:v 250k "
1056                  "-vcodec %s %s", movie_dir, output_filename, ffmpeg_codec,
1057                  output_filename);
1058         system_check(line);
1059 }
1060
1061 static void tencode_movie(char *movie_dir)
1062 {
1063         fprintf(stderr, "Creating movie %s with png2theora\n", movie_dir);
1064         snprintf(line, line_len, "png2theora -o %s %s/%%010d-%s.svg.png",
1065                         output_filename, movie_dir, output_filename);
1066         system_check(line);
1067 }
1068
1069 static void encode_movie(char *movie_dir)
1070 {
1071         char *last_dot = strrchr(output_filename, '.');
1072
1073         if (last_dot &&
1074             (!strncmp(last_dot, ".ogg", 4) || !strncmp(last_dot, ".ogv", 4))) {
1075                 tencode_movie(movie_dir);
1076         } else
1077                 mencode_movie(movie_dir);
1078 }
1079
1080 static void cleanup_movie(char *movie_dir)
1081 {
1082         if (keep_movie_svgs) {
1083                 fprintf(stderr, "Keeping movie dir %s\n", movie_dir);
1084                 return;
1085         }
1086         fprintf(stderr, "Removing movie dir %s\n", movie_dir);
1087         snprintf(line, line_len, "rm %s/*", movie_dir);
1088         system_check(line);
1089
1090         snprintf(line, line_len, "rmdir %s", movie_dir);
1091         system_check(line);
1092 }
1093
1094 static void plot_io_movie(struct plot *plot)
1095 {
1096         struct trace_file *tf;
1097         int i, pid;
1098         struct plot_history *history;
1099         int batch_i;
1100         int movie_len = 30;
1101         int movie_frames_per_sec = 20;
1102         int total_frames = movie_len * movie_frames_per_sec;
1103         int rows, cols;
1104         int batch_count;
1105         int graph_width_factor = 5;
1106         int orig_y_offset;
1107         char movie_dir[] = "io-movie-XXXXXX";
1108
1109         if (mkdtemp(movie_dir) == NULL) {
1110                 perror("Unable to create temp directory for movie files");
1111                 exit(1);
1112         }
1113
1114         get_graph_size(&cols, &rows);
1115         batch_count = cols / total_frames;
1116
1117         if (batch_count == 0)
1118                 batch_count = 1;
1119
1120         list_for_each_entry(tf, &all_traces, list) {
1121                 char *prefix = tf->label ? tf->label : "";
1122
1123                 i = 0;
1124                 while (i < cols) {
1125                         snprintf(line, line_len, "%s/%010d-%s.svg", movie_dir, i, output_filename);
1126                         set_plot_output(plot, line);
1127                         set_plot_title(plot, graph_title);
1128                         orig_y_offset = plot->start_y_offset;
1129
1130                         plot->no_legend = 1;
1131
1132                         set_graph_size(cols / graph_width_factor, rows / 8);
1133                         plot->timeline = i / graph_width_factor;
1134
1135                         plot_tput(plot, tf->min_seconds, tf->max_seconds, 0);
1136
1137                         plot_cpu(plot, tf->max_seconds,
1138                                    "CPU System Time", CPU_SYS_GRAPH_INDEX, MPSTAT_SYS);
1139
1140                         plot->direction = PLOT_ACROSS;
1141                         plot_queue_depth(plot, tf->min_seconds, tf->max_seconds);
1142
1143                         /* movie graph starts here */
1144                         plot->start_y_offset = orig_y_offset;
1145                         set_graph_size(cols - cols / graph_width_factor, rows);
1146                         plot->no_legend = 0;
1147                         plot->timeline = 0;
1148                         plot->direction = PLOT_DOWN;;
1149
1150                         if (movie_style == MOVIE_SPINDLE)
1151                                 setup_axis_spindle(plot);
1152                         else
1153                                 setup_axis(plot);
1154
1155                         svg_alloc_legend(plot, count_io_plot_types() * 2);
1156
1157                         history = alloc_plot_history(tf);
1158                         history->col = i;
1159
1160                         for (pid = 0; pid < tf->io_plots; pid++) {
1161                                 if (tf->gdd_reads[pid])
1162                                         plot_io_legend(plot, tf->gdd_reads[pid], prefix, " Reads");
1163                                 if (tf->gdd_writes[pid])
1164                                         plot_io_legend(plot, tf->gdd_writes[pid], prefix, " Writes");
1165                         }
1166
1167                         batch_i = 0;
1168                         while (i < cols && batch_i < batch_count) {
1169                                 for (pid = 0; pid < tf->io_plots; pid++) {
1170                                         if (tf->gdd_reads[pid]) {
1171                                                 svg_io_graph_movie(tf->gdd_reads[pid],
1172                                                                    history->read_pid_history[pid],
1173                                                                    i);
1174                                         }
1175                                         if (tf->gdd_writes[pid]) {
1176                                                 svg_io_graph_movie(tf->gdd_writes[pid],
1177                                                                    history->write_pid_history[pid],
1178                                                                    i);
1179                                         }
1180                                 }
1181                                 i++;
1182                                 batch_i++;
1183                         }
1184
1185                         add_history(history, &movie_history);
1186
1187                         plot_movie_history(plot, &movie_history);
1188
1189                         svg_write_legend(plot);
1190                         close_plot(plot);
1191                         close_plot(plot);
1192
1193                         close_plot_file(plot);
1194                 }
1195                 free_all_plot_history(&movie_history);
1196         }
1197         convert_movie_files(movie_dir);
1198         encode_movie(movie_dir);
1199         cleanup_movie(movie_dir);
1200 }
1201
1202 static void plot_latency(struct plot *plot, unsigned int min_seconds,
1203                          unsigned int max_seconds)
1204 {
1205         struct trace_file *tf;
1206         char *units;
1207         char line[128];
1208         u64 max = 0, val;
1209
1210         if (active_graphs[LATENCY_GRAPH_INDEX] == 0)
1211                 return;
1212
1213         if (num_traces > 1)
1214                 svg_alloc_legend(plot, num_traces);
1215
1216         list_for_each_entry(tf, &all_traces, list) {
1217                 val = line_graph_roll_avg_max(tf->latency_gld);
1218                 if (val > max)
1219                         max = val;
1220         }
1221
1222         list_for_each_entry(tf, &all_traces, list)
1223                 tf->latency_gld->max = max;
1224
1225         setup_axis(plot);
1226         set_plot_label(plot, "IO Latency");
1227
1228         tf = list_entry(all_traces.next, struct trace_file, list);
1229
1230         scale_line_graph_time(&max, &units);
1231         sprintf(line, "latency (%ss)", units);
1232         set_ylabel(plot, line);
1233         set_yticks(plot, num_yticks, 0, max, "");
1234         set_xticks(plot, num_xticks, min_seconds, max_seconds);
1235
1236         list_for_each_entry(tf, &all_traces, list) {
1237                 svg_line_graph(plot, tf->latency_gld, tf->line_color, 0, 0);
1238                 if (num_traces > 1)
1239                         svg_add_legend(plot, tf->label, "", tf->line_color);
1240         }
1241
1242         if (plot->add_xlabel)
1243                 set_xlabel(plot, "Time (seconds)");
1244         if (num_traces > 1)
1245                 svg_write_legend(plot);
1246         close_plot(plot);
1247         total_graphs_written++;
1248 }
1249
1250 static void plot_iops(struct plot *plot, unsigned int min_seconds,
1251                       unsigned int max_seconds)
1252 {
1253         struct trace_file *tf;
1254         char *units;
1255         u64 max = 0, val;
1256
1257         if (active_graphs[IOPS_GRAPH_INDEX] == 0)
1258                 return;
1259
1260         list_for_each_entry(tf, &all_traces, list) {
1261                 val = line_graph_roll_avg_max(tf->iop_gld);
1262                 if (val > max)
1263                         max = val;
1264         }
1265
1266         list_for_each_entry(tf, &all_traces, list)
1267                 tf->iop_gld->max = max;
1268
1269         setup_axis(plot);
1270         set_plot_label(plot, "IOPs");
1271         if (num_traces > 1)
1272                 svg_alloc_legend(plot, num_traces);
1273
1274         tf = list_entry(all_traces.next, struct trace_file, list);
1275
1276         scale_line_graph_bytes(&max, &units, 1000);
1277         set_ylabel(plot, "IO/s");
1278
1279         set_yticks(plot, num_yticks, 0, max, units);
1280         set_xticks(plot, num_xticks, min_seconds, max_seconds);
1281
1282         list_for_each_entry(tf, &all_traces, list) {
1283                 svg_line_graph(plot, tf->iop_gld, tf->line_color, 0, 0);
1284                 if (num_traces > 1)
1285                         svg_add_legend(plot, tf->label, "", tf->line_color);
1286         }
1287
1288         if (plot->add_xlabel)
1289                 set_xlabel(plot, "Time (seconds)");
1290         if (num_traces > 1)
1291                 svg_write_legend(plot);
1292
1293         close_plot(plot);
1294         total_graphs_written++;
1295 }
1296
1297 static void check_plot_columns(struct plot *plot, int index)
1298 {
1299         int count;
1300
1301         if (columns > 1 && (total_graphs_written == 0 ||
1302             total_graphs_written % columns != 0)) {
1303                 count = graphs_left(index);
1304                 if (plot->direction == PLOT_DOWN) {
1305                         plot->start_x_offset = 0;
1306                         if (count <= columns)
1307                                 plot->add_xlabel = 1;
1308                 }
1309                 plot->direction = PLOT_ACROSS;
1310
1311         } else {
1312                 plot->direction = PLOT_DOWN;
1313                 if (index == last_active_graph)
1314                         plot->add_xlabel = 1;
1315         }
1316
1317 }
1318
1319 enum {
1320         HELP_LONG_OPT = 1,
1321 };
1322
1323 char *option_string = "+F:T:t:o:l:r:O:N:d:D:pm::h:w:c:x:y:a:C:PK";
1324 static struct option long_options[] = {
1325         {"columns", required_argument, 0, 'c'},
1326         {"fio-trace", required_argument, 0, 'F'},
1327         {"title", required_argument, 0, 'T'},
1328         {"trace", required_argument, 0, 't'},
1329         {"output", required_argument, 0, 'o'},
1330         {"label", required_argument, 0, 'l'},
1331         {"rolling", required_argument, 0, 'r'},
1332         {"no-graph", required_argument, 0, 'N'},
1333         {"only-graph", required_argument, 0, 'O'},
1334         {"device", required_argument, 0, 'd'},
1335         {"blktrace-destination", required_argument, 0, 'D'},
1336         {"prog", no_argument, 0, 'p'},
1337         {"movie", optional_argument, 0, 'm'},
1338         {"codec", optional_argument, 0, 'C'},
1339         {"keep-movie-svgs", no_argument, 0, 'K'},
1340         {"width", required_argument, 0, 'w'},
1341         {"height", required_argument, 0, 'h'},
1342         {"xzoom", required_argument, 0, 'x'},
1343         {"yzoom", required_argument, 0, 'y'},
1344         {"io-plot-action", required_argument, 0, 'a'},
1345         {"per-process-io", no_argument, 0, 'P'},
1346         {"help", no_argument, 0, HELP_LONG_OPT},
1347         {0, 0, 0, 0}
1348 };
1349
1350 static void print_usage(void)
1351 {
1352         fprintf(stderr, "iowatcher usage:\n"
1353                 "\t-d (--device): device for blktrace to trace\n"
1354                 "\t-D (--blktrace-destination): destination for blktrace\n"
1355                 "\t-t (--trace): trace file name (more than one allowed)\n"
1356                 "\t-F (--fio-trace): fio bandwidth trace (more than one allowed)\n"
1357                 "\t-l (--label): trace label in the graph\n"
1358                 "\t-o (--output): output file name for the SVG image or video\n"
1359                 "\t-p (--prog): run a program while blktrace is run\n"
1360                 "\t-K (--keep-movie-svgs keep svgs generated for movie mode\n"
1361                 "\t-m (--movie [=spindle|rect]): create IO animations\n"
1362                 "\t-C (--codec): ffmpeg codec. Use ffmpeg -codecs to list\n"
1363                 "\t-r (--rolling): number of seconds in the rolling averge\n"
1364                 "\t-T (--title): graph title\n"
1365                 "\t-N (--no-graph): skip a single graph (io, tput, latency, queue-depth, \n"
1366                 "\t\t\tiops, cpu-sys, cpu-io, cpu-irq cpu-soft cpu-user)\n"
1367                 "\t-O (--only-graph): add a single graph to the output\n"
1368                 "\t-h (--height): set the height of each graph\n"
1369                 "\t-w (--width): set the width of each graph\n"
1370                 "\t-c (--columns): numbers of columns in graph output\n"
1371                 "\t-x (--xzoom): limit processed time to min:max\n"
1372                 "\t-y (--yzoom): limit processed sectors to min:max\n"
1373                 "\t-a (--io-plot-action): plot given action (one of Q,D,C) in IO graph\n"
1374                 "\t-P (--per-process-io): distinguish between processes in IO graph\n"
1375                );
1376         exit(1);
1377 }
1378
1379 static int parse_double_range(char *str, double *min, double *max)
1380 {
1381         char *end;
1382
1383         /* Empty lower bound - leave original value */
1384         if (str[0] != ':') {
1385                 *min = strtod(str, &end);
1386                 if (*min == HUGE_VAL || *min == -HUGE_VAL)
1387                         return -ERANGE;
1388                 if (*end != ':')
1389                         return -EINVAL;
1390         } else
1391                 end = str;
1392         /* Empty upper bound - leave original value */
1393         if (end[1]) {
1394                 *max = strtod(end+1, &end);
1395                 if (*max == HUGE_VAL || *max == -HUGE_VAL)
1396                         return -ERANGE;
1397                 if (*end != 0)
1398                         return -EINVAL;
1399         }
1400         if (*min > *max)
1401                 return -EINVAL;
1402         return 0;
1403 }
1404
1405 static int parse_ull_range(char *str, unsigned long long *min,
1406                            unsigned long long *max)
1407 {
1408         char *end;
1409
1410         /* Empty lower bound - leave original value */
1411         if (str[0] != ':') {
1412                 *min = strtoull(str, &end, 10);
1413                 if (*min == ULLONG_MAX && errno == ERANGE)
1414                         return -ERANGE;
1415                 if (*end != ':')
1416                         return -EINVAL;
1417         } else
1418                 end = str;
1419         /* Empty upper bound - leave original value */
1420         if (end[1]) {
1421                 *max = strtoull(end+1, &end, 10);
1422                 if (*max == ULLONG_MAX && errno == ERANGE)
1423                         return -ERANGE;
1424                 if (*end != 0)
1425                         return -EINVAL;
1426         }
1427         if (*min > *max)
1428                 return -EINVAL;
1429         return 0;
1430 }
1431
1432 static int parse_options(int ac, char **av)
1433 {
1434         int c;
1435         int disabled = 0;
1436         int p_flagged = 0;
1437
1438         while (1) {
1439                 int option_index = 0;
1440
1441                 c = getopt_long(ac, av, option_string,
1442                                 long_options, &option_index);
1443
1444                 if (c == -1)
1445                         break;
1446
1447                 switch(c) {
1448                 case 'T':
1449                         graph_title = strdup(optarg);
1450                         break;
1451                 case 't':
1452                         add_trace_file(optarg);
1453                         set_blktrace_outfile(optarg);
1454                         break;
1455                 case 'F':
1456                         add_fio_trace_file(optarg);
1457                         break;
1458                 case 'o':
1459                         output_filename = strdup(optarg);
1460                         break;
1461                 case 'l':
1462                         set_trace_label(optarg);
1463                         break;
1464                 case 'r':
1465                         set_rolling_avg(atoi(optarg));
1466                         break;
1467                 case 'O':
1468                         if (!disabled) {
1469                                 disable_all_graphs();
1470                                 disabled = 1;
1471                         }
1472                         enable_one_graph(optarg);
1473                         break;
1474                 case 'N':
1475                         disable_one_graph(optarg);
1476                         break;
1477                 case 'd':
1478                         if (num_blktrace_devices == MAX_DEVICES_PER_TRACE - 1) {
1479                                 fprintf(stderr, "Too many blktrace devices provided\n");
1480                                 exit(1);
1481                         }
1482                         blktrace_devices[num_blktrace_devices++] = strdup(optarg);
1483                         break;
1484                 case 'D':
1485                         blktrace_dest_dir = strdup(optarg);
1486                         if (!strcmp(blktrace_dest_dir, "")) {
1487                                 fprintf(stderr, "Need a directory\n");
1488                                 print_usage();
1489                         }
1490                         break;
1491                 case 'p':
1492                         p_flagged = 1;
1493                         break;
1494                 case 'K':
1495                         keep_movie_svgs = 1;
1496                         break;
1497                 case 'm':
1498                         make_movie = 1;
1499                         if (optarg) {
1500                                 movie_style = lookup_movie_style(optarg);
1501                                 if (movie_style < 0) {
1502                                         fprintf(stderr, "Unknown movie style %s\n", optarg);
1503                                         print_usage();
1504                                 }
1505                         }
1506                         fprintf(stderr, "Using movie style: %s\n",
1507                                 movie_styles[movie_style]);
1508                         break;
1509                 case 'C':
1510                         ffmpeg_codec = strdup(optarg);
1511                         break;
1512                 case 'h':
1513                         opt_graph_height = atoi(optarg);
1514                         break;
1515                 case 'w':
1516                         opt_graph_width = atoi(optarg);
1517                         break;
1518                 case 'c':
1519                         columns = atoi(optarg);
1520                         break;
1521                 case 'x':
1522                         if (parse_double_range(optarg, &min_time, &max_time)
1523                             < 0) {
1524                                 fprintf(stderr, "Cannot parse time range %s\n",
1525                                         optarg);
1526                                 exit(1);
1527                         }
1528                         break;
1529                 case 'y':
1530                         if (parse_ull_range(optarg, &min_mb, &max_mb)
1531                             < 0) {
1532                                 fprintf(stderr,
1533                                         "Cannot parse offset range %s\n",
1534                                         optarg);
1535                                 exit(1);
1536                         }
1537                         if (max_mb > ULLONG_MAX >> 20) {
1538                                 fprintf(stderr,
1539                                         "Upper range limit too big."
1540                                         " Maximum is %llu.\n", ULLONG_MAX >> 20);
1541                                 exit(1);
1542                         }
1543                         break;
1544                 case 'a':
1545                         if (strlen(optarg) != 1) {
1546 action_err:
1547                                 fprintf(stderr, "Action must be one of Q, D, C.");
1548                                 exit(1);
1549                         }
1550                         plot_io_action = action_char_to_num(optarg[0]);
1551                         if (plot_io_action < 0)
1552                                 goto action_err;
1553                         break;
1554                 case 'P':
1555                         io_per_process = 1;
1556                         break;
1557                 case '?':
1558                 case HELP_LONG_OPT:
1559                         print_usage();
1560                         break;
1561                 default:
1562                         break;
1563                 }
1564         }
1565
1566         if (optind < ac && p_flagged) {
1567                 prog_argv = &av[optind];
1568                 prog_argc = ac - optind;
1569         } else if (p_flagged) {
1570                 fprintf(stderr, "--prog or -p given but no program specified\n");
1571                 exit(1);
1572         } else if (optind < ac) {
1573                 fprintf(stderr, "Extra arguments '%s'... (and --prog not specified)\n", av[optind]);
1574                 exit(1);
1575         }
1576
1577         return 0;
1578 }
1579
1580 static void dest_mkdir(char *dir)
1581 {
1582         int ret;
1583
1584         ret = mkdir(dir, 0777);
1585         if (ret && errno != EEXIST) {
1586                 fprintf(stderr, "failed to mkdir error %s\n", strerror(errno));
1587                 exit(errno);
1588         }
1589 }
1590
1591 int main(int ac, char **av)
1592 {
1593         struct plot *plot;
1594         unsigned int min_seconds = 0;
1595         unsigned int max_seconds = 0;
1596         u64 max_offset = 0;
1597         u64 min_offset = ~(u64)0;
1598         struct trace_file *tf;
1599         int ret;
1600         int rows, cols;
1601
1602         init_io_hash_table();
1603         init_process_hash_table();
1604
1605         enable_all_graphs();
1606
1607         parse_options(ac, av);
1608
1609         last_active_graph = last_graph();
1610         if (make_movie) {
1611                 set_io_graph_scale(256);
1612                 if (movie_style == MOVIE_SPINDLE)
1613                         set_graph_size(750, 550);
1614                 else
1615                         set_graph_size(700, 400);
1616
1617                 /*
1618                  * the plots in the movie don't have a seconds
1619                  * line yet, this makes us skip it
1620                  */
1621                 last_active_graph = TOTAL_GRAPHS + 1;
1622         }
1623         if (opt_graph_height)
1624                 set_graph_height(opt_graph_height);
1625
1626         if (opt_graph_width)
1627                 set_graph_width(opt_graph_width);
1628
1629         if (list_empty(&all_traces) && list_empty(&fio_traces)) {
1630                 fprintf(stderr, "No traces found, exiting\n");
1631                 exit(1);
1632         }
1633
1634         if (num_blktrace_devices) {
1635                 char *path = join_path(blktrace_dest_dir, blktrace_outfile);
1636                 dest_mkdir(blktrace_dest_dir);
1637                 dest_mkdir(path);
1638
1639                 snprintf(line, line_len, "%s.dump", path);
1640                 unlink(line);
1641
1642                 ret = start_blktrace(blktrace_devices, num_blktrace_devices,
1643                                      blktrace_outfile, blktrace_dest_dir);
1644                 if (ret) {
1645                         perror("Exiting due to blktrace failure");
1646                         exit(ret);
1647                 }
1648
1649                 snprintf(line, line_len, "%s.mpstat", path);
1650                 ret = start_mpstat(line);
1651                 if (ret) {
1652                         perror("Exiting due to mpstat failure");
1653                         exit(ret);
1654                 }
1655
1656                 if (prog_argv && prog_argc) {
1657                         run_program(prog_argc, prog_argv, 1, NULL, NULL);
1658                         wait_for_tracers(SIGINT);
1659                 } else {
1660                         printf("Tracing until interrupted...\n");
1661                         wait_for_tracers(0);
1662                 }
1663                 free(path);
1664         }
1665
1666         /* step one, read all the traces */
1667         read_traces();
1668
1669         /* step two, find the maxes for time and offset */
1670         list_for_each_entry(tf, &all_traces, list)
1671                 compare_minmax_tf(tf, &max_seconds, &min_offset, &max_offset);
1672         list_for_each_entry(tf, &fio_traces, list)
1673                 compare_minmax_tf(tf, &max_seconds, &min_offset, &max_offset);
1674         min_seconds = min_time;
1675         if (max_seconds > max_time)
1676                 max_seconds = ceil(max_time);
1677         if (min_offset < min_mb << 20)
1678                 min_offset = min_mb << 20;
1679         if (max_offset > max_mb << 20)
1680                 max_offset = max_mb << 20;
1681
1682         /* push the max we found into all the tfs */
1683         set_all_minmax_tf(min_seconds, max_seconds, min_offset, max_offset);
1684
1685         /* alloc graphing structs for all the traces */
1686         setup_trace_file_graphs();
1687
1688         /* run through all the traces and read their events */
1689         read_trace_events();
1690
1691         pick_line_graph_color();
1692
1693         plot = alloc_plot();
1694
1695         if (make_movie) {
1696                 set_legend_width(longest_label + longest_proc_name + 1 + strlen("writes"));
1697                 plot_io_movie(plot);
1698                 exit(0);
1699         }
1700
1701         set_plot_output(plot, output_filename);
1702
1703         if (active_graphs[IO_GRAPH_INDEX] || found_mpstat)
1704                 set_legend_width(longest_label + longest_proc_name + 1 + strlen("writes"));
1705         else if (num_traces >= 1 || num_fio_traces >= 1)
1706                 set_legend_width(longest_label);
1707         else
1708                 set_legend_width(0);
1709
1710         get_graph_size(&cols, &rows);
1711         if (columns > 1)
1712                 plot->add_xlabel = 1;
1713         set_plot_title(plot, graph_title);
1714
1715         check_plot_columns(plot, IO_GRAPH_INDEX);
1716         plot_io(plot, min_seconds, max_seconds, min_offset, max_offset);
1717         plot->add_xlabel = 0;
1718
1719         if (columns > 1) {
1720                 set_graph_size(cols / columns, rows);
1721                 num_xticks /= columns;
1722                 if (num_xticks < 2)
1723                         num_xticks = 2;
1724         }
1725         if (rows <= 50)
1726                 num_yticks--;
1727
1728         check_plot_columns(plot, TPUT_GRAPH_INDEX);
1729         plot_tput(plot, min_seconds, max_seconds, 1);
1730
1731         check_plot_columns(plot, FIO_GRAPH_INDEX);
1732         plot_fio_tput(plot, min_seconds, max_seconds);
1733
1734         check_plot_columns(plot, CPU_IO_GRAPH_INDEX);
1735         plot_cpu(plot, max_seconds, "CPU IO Wait Time",
1736                  CPU_IO_GRAPH_INDEX, MPSTAT_IO);
1737
1738         check_plot_columns(plot, CPU_SYS_GRAPH_INDEX);
1739         plot_cpu(plot, max_seconds, "CPU System Time",
1740                  CPU_SYS_GRAPH_INDEX, MPSTAT_SYS);
1741
1742         check_plot_columns(plot, CPU_IRQ_GRAPH_INDEX);
1743         plot_cpu(plot, max_seconds, "CPU IRQ Time",
1744                  CPU_IRQ_GRAPH_INDEX, MPSTAT_IRQ);
1745
1746         check_plot_columns(plot, CPU_SOFT_GRAPH_INDEX);
1747         plot_cpu(plot, max_seconds, "CPU SoftIRQ Time",
1748                  CPU_SOFT_GRAPH_INDEX, MPSTAT_SOFT);
1749
1750         check_plot_columns(plot, CPU_USER_GRAPH_INDEX);
1751         plot_cpu(plot, max_seconds, "CPU User Time",
1752                  CPU_USER_GRAPH_INDEX, MPSTAT_USER);
1753
1754         check_plot_columns(plot, LATENCY_GRAPH_INDEX);
1755         plot_latency(plot, min_seconds, max_seconds);
1756
1757         check_plot_columns(plot, QUEUE_DEPTH_GRAPH_INDEX);
1758         plot_queue_depth(plot, min_seconds, max_seconds);
1759
1760         check_plot_columns(plot, IOPS_GRAPH_INDEX);
1761         plot_iops(plot, min_seconds, max_seconds);
1762
1763         /* once for all */
1764         close_plot(plot);
1765         close_plot_file(plot);
1766         return 0;
1767 }