src/bootchart/svg.c

   1 /*
   2  * svg.c
   3  *
   4  * Copyright (C) 2009-2012 Intel Coproration
   5  *
   6  * Authors:
   7  *   Auke Kok <auke-jan.h.kok@intel.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; version 2
  12  * of the License.
  13  */
  14
  15 #include <stdio.h>
  16 #include <stdarg.h>
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <time.h>
  20 #include <limits.h>
  21 #include <unistd.h>
  22 #include <sys/utsname.h>
  23
  24 #include "bootchart.h"
  25
  26
  27 #define time_to_graph(t) ((t) * scale_x)
  28 #define ps_to_graph(n) ((n) * scale_y)
  29 #define kb_to_graph(m) ((m) * scale_y * 0.0001)
  30 #define to_color(n) (192.0 - ((n) * 192.0))
  31
  32 #define max(x, y) (((x) > (y)) ? (x) : (y))
  33 #define min(x, y) (((x) < (y)) ? (x) : (y))
  34
  35 static char str[8092];
  36
  37 #define svg(a...) do { snprintf(str, 8092, ## a); fputs(str, of); fflush(of); } while (0)
  38
  39 static const char *colorwheel[12] = {
  40         "rgb(255,32,32)",  // red
  41         "rgb(32,192,192)", // cyan
  42         "rgb(255,128,32)", // orange
  43         "rgb(128,32,192)", // blue-violet
  44         "rgb(255,255,32)", // yellow
  45         "rgb(192,32,128)", // red-violet
  46         "rgb(32,255,32)",  // green
  47         "rgb(255,64,32)",  // red-orange
  48         "rgb(32,32,255)",  // blue
  49         "rgb(255,192,32)", // yellow-orange
  50         "rgb(192,32,192)", // violet
  51         "rgb(32,192,32)"   // yellow-green
  52 };
  53
  54 static double idletime = -1.0;
  55 static int pfiltered = 0;
  56 static int pcount = 0;
  57 static int kcount = 0;
  58 static float psize = 0;
  59 static float ksize = 0;
  60 static float esize = 0;
  61
  62
  63 static void svg_header(void)
  64 {
  65         float w;
  66         float h;
  67
  68         /* min width is about 1600px due to the label */
  69         w = 150.0 + 10.0 + time_to_graph(sampletime[samples-1] - graph_start);
  70         w = ((w < 1600.0) ? 1600.0 : w);
  71
  72         /* height is variable based on pss, psize, ksize */
  73         h = 400.0 + (scale_y * 30.0) /* base graphs and title */
  74             + (pss ? (100.0 * scale_y) + (scale_y * 7.0) : 0.0) /* pss estimate */
  75             + psize + ksize + esize;
  76
  77         svg("<?xml version=\"1.0\" standalone=\"no\"?>\n");
  78         svg("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" ");
  79         svg("\"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n");
  80
  81         //svg("<g transform=\"translate(10,%d)\">\n", 1000 + 150 + (pcount * 20));
  82         svg("<svg width=\"%.0fpx\" height=\"%.0fpx\" version=\"1.1\" ",
  83             w, h);
  84         svg("xmlns=\"http://www.w3.org/2000/svg\">\n\n");
  85
  86         /* write some basic info as a comment, including some help */
  87         svg("<!-- This file is a bootchart SVG file. It is best rendered in a browser -->\n");
  88         svg("<!-- such as Chrome/Chromium, firefox. Other applications that render    -->\n");
  89         svg("<!-- these files properly but much more slow are ImageMagick, gimp,      -->\n");
  90         svg("<!-- inkscape, etc.. To display the files on your system, just point     -->\n");
  91         svg("<!-- your browser to file:///var/log/ and click. This bootchart was      -->\n\n");
  92
  93         svg("<!-- generated by bootchart version %s, running with options:  -->\n", VERSION);
  94         svg("<!-- hz=\"%f\" n=\"%d\" -->\n", hz, len);
  95         svg("<!-- x=\"%f\" y=\"%f\" -->\n", scale_x, scale_y);
  96         svg("<!-- rel=\"%d\" f=\"%d\" -->\n", relative, filter);
  97         svg("<!-- p=\"%d\" e=\"%d\" -->\n", pss, entropy);
  98         svg("<!-- o=\"%s\" i=\"%s\" -->\n\n", output_path, init_path);
  99
 100         /* style sheet */
 101         svg("<defs>\n  <style type=\"text/css\">\n    <![CDATA[\n");
 102
 103         svg("      rect       { stroke-width: 1; }\n");
 104         svg("      rect.cpu   { fill: rgb(64,64,240); stroke-width: 0; fill-opacity: 0.7; }\n");
 105         svg("      rect.wait  { fill: rgb(240,240,0); stroke-width: 0; fill-opacity: 0.7; }\n");
 106         svg("      rect.bi    { fill: rgb(240,128,128); stroke-width: 0; fill-opacity: 0.7; }\n");
 107         svg("      rect.bo    { fill: rgb(192,64,64); stroke-width: 0; fill-opacity: 0.7; }\n");
 108         svg("      rect.ps    { fill: rgb(192,192,192); stroke: rgb(128,128,128); fill-opacity: 0.7; }\n");
 109         svg("      rect.krnl  { fill: rgb(240,240,0); stroke: rgb(128,128,128); fill-opacity: 0.7; }\n");
 110         svg("      rect.box   { fill: rgb(240,240,240); stroke: rgb(192,192,192); }\n");
 111         svg("      rect.clrw  { stroke-width: 0; fill-opacity: 0.7;}\n");
 112         svg("      line       { stroke: rgb(64,64,64); stroke-width: 1; }\n");
 113         svg("//    line.sec1  { }\n");
 114         svg("      line.sec5  { stroke-width: 2; }\n");
 115         svg("      line.sec01 { stroke: rgb(224,224,224); stroke-width: 1; }\n");
 116         svg("      line.dot   { stroke-dasharray: 2 4; }\n");
 117         svg("      line.idle  { stroke: rgb(64,64,64); stroke-dasharray: 10 6; stroke-opacity: 0.7; }\n");
 118
 119         svg("      .run       { font-size: 8; font-style: italic; }\n");
 120         svg("      text       { font-family: Verdana, Helvetica; font-size: 10; }\n");
 121         svg("      text.sec   { font-size: 8; }\n");
 122         svg("      text.t1    { font-size: 24; }\n");
 123         svg("      text.t2    { font-size: 12; }\n");
 124         svg("      text.idle  { font-size: 18; }\n");
 125
 126         svg("    ]]>\n   </style>\n</defs>\n\n");
 127
 128 }
 129
 130
 131 static void svg_title(void)
 132 {
 133         char cmdline[256] = "";
 134         char filename[PATH_MAX];
 135         char buf[256];
 136         char rootbdev[16] = "Unknown";
 137         char model[256] = "Unknown";
 138         char date[256] = "Unknown";
 139         char cpu[256] = "Unknown";
 140         char build[256] = "Unknown";
 141         char *c;
 142         FILE *f;
 143         time_t t;
 144         struct utsname uts;
 145
 146         /* grab /proc/cmdline */
 147         f = fopen("/proc/cmdline", "r");
 148         if (f) {
 149                 if (!fgets(cmdline, 255, f))
 150                         sprintf(cmdline, "Unknown");
 151                 fclose(f);
 152         }
 153
 154         /* extract root fs so we can find disk model name in sysfs */
 155         c = strstr(cmdline, "root=/dev/");
 156         if (c) {
 157                 strncpy(rootbdev, &c[10], 3);
 158                 rootbdev[3] = '\0';
 159         }
 160         sprintf(filename, "/sys/block/%s/device/model", rootbdev);
 161         f = fopen(filename, "r");
 162         if (f) {
 163                 if (!fgets(model, 255, f))
 164                         fprintf(stderr, "Error reading disk model for %s\n", rootbdev);
 165                 fclose(f);
 166         }
 167
 168         /* various utsname parameters */
 169         if (uname(&uts))
 170                 fprintf(stderr, "Error getting uname info\n");
 171
 172         /* date */
 173         t = time(NULL);
 174         strftime(date, sizeof(date), "%a, %d %b %Y %H:%M:%S %z", localtime(&t));
 175
 176         /* CPU type */
 177         f = fopen("/proc/cpuinfo", "r");
 178         if (f) {
 179                 while (fgets(buf, 255, f)) {
 180                         if (strstr(buf, "model name")) {
 181                                 strncpy(cpu, &buf[13], 255);
 182                                 break;
 183                         }
 184                 }
 185                 fclose(f);
 186         }
 187
 188         /* Build - 1st line from /etc/system-release */
 189         f = fopen("/etc/system-release", "r");
 190         if (f) {
 191                 if (fgets(buf, 255, f))
 192                         strncpy(build, buf, 255);
 193                 fclose(f);
 194         }
 195
 196         svg("<text class=\"t1\" x=\"0\" y=\"30\">Bootchart for %s - %s</text>\n",
 197             uts.nodename, date);
 198         svg("<text class=\"t2\" x=\"20\" y=\"50\">System: %s %s %s %s</text>\n",
 199             uts.sysname, uts.release, uts.version, uts.machine);
 200         svg("<text class=\"t2\" x=\"20\" y=\"65\">CPU: %s</text>\n",
 201             cpu);
 202         svg("<text class=\"t2\" x=\"20\" y=\"80\">Disk: %s</text>\n",
 203             model);
 204         svg("<text class=\"t2\" x=\"20\" y=\"95\">Boot options: %s</text>\n",
 205             cmdline);
 206         svg("<text class=\"t2\" x=\"20\" y=\"110\">Build: %s</text>\n",
 207             build);
 208         svg("<text class=\"t2\" x=\"20\" y=\"125\">Log start time: %.03fs</text>\n", log_start);
 209         svg("<text class=\"t2\" x=\"20\" y=\"140\">Idle time: ");
 210
 211         if (idletime >= 0.0)
 212                 svg("%.03fs", idletime);
 213         else
 214                 svg("Not detected");
 215         svg("</text>\n");
 216         svg("<text class=\"sec\" x=\"20\" y=\"155\">Graph data: %.03f samples/sec, recorded %i total, dropped %i samples, %i processes, %i filtered</text>\n",
 217             hz, len, overrun, pscount, pfiltered);
 218 }
 219
 220
 221 static void svg_graph_box(int height)
 222 {
 223         double d = 0.0;
 224         int i = 0;
 225
 226         /* outside box, fill */
 227         svg("<rect class=\"box\" x=\"%.03f\" y=\"0\" width=\"%.03f\" height=\"%.03f\" />\n",
 228             time_to_graph(0.0),
 229             time_to_graph(sampletime[samples-1] - graph_start),
 230             ps_to_graph(height));
 231
 232         for (d = graph_start; d <= sampletime[samples-1];
 233              d += (scale_x < 2.0 ? 60.0 : scale_x < 10.0 ? 1.0 : 0.1)) {
 234                 /* lines for each second */
 235                 if (i % 50 == 0)
 236                         svg("  <line class=\"sec5\" x1=\"%.03f\" y1=\"0\" x2=\"%.03f\" y2=\"%.03f\" />\n",
 237                             time_to_graph(d - graph_start),
 238                             time_to_graph(d - graph_start),
 239                             ps_to_graph(height));
 240                 else if (i % 10 == 0)
 241                         svg("  <line class=\"sec1\" x1=\"%.03f\" y1=\"0\" x2=\"%.03f\" y2=\"%.03f\" />\n",
 242                             time_to_graph(d - graph_start),
 243                             time_to_graph(d - graph_start),
 244                             ps_to_graph(height));
 245                 else
 246                         svg("  <line class=\"sec01\" x1=\"%.03f\" y1=\"0\" x2=\"%.03f\" y2=\"%.03f\" />\n",
 247                             time_to_graph(d - graph_start),
 248                             time_to_graph(d - graph_start),
 249                             ps_to_graph(height));
 250
 251                 /* time label */
 252                 if (i % 10 == 0)
 253                         svg("  <text class=\"sec\" x=\"%.03f\" y=\"%.03f\" >%.01fs</text>\n",
 254                             time_to_graph(d - graph_start),
 255                             -5.0,
 256                             d - graph_start);
 257
 258                 i++;
 259         }
 260 }
 261
 262
 263 static void svg_pss_graph(void)
 264 {
 265         struct ps_struct *ps;
 266         int i;
 267
 268         svg("\n\n<!-- Pss memory size graph -->\n");
 269
 270         svg("\n  <text class=\"t2\" x=\"5\" y=\"-15\">Memory allocation - Pss</text>\n");
 271
 272         /* vsize 1000 == 1000mb */
 273         svg_graph_box(100);
 274         /* draw some hlines for usable memory sizes */
 275         for (i = 100000; i < 1000000; i += 100000) {
 276                 svg("  <line class=\"sec01\" x1=\"%.03f\" y1=\"%.0f\" x2=\"%.03f\" y2=\"%.0f\"/>\n",
 277                         time_to_graph(.0),
 278                         kb_to_graph(i),
 279                         time_to_graph(sampletime[samples-1] - graph_start),
 280                         kb_to_graph(i));
 281                 svg("  <text class=\"sec\" x=\"%.03f\" y=\"%.0f\">%dM</text>\n",
 282                     time_to_graph(sampletime[samples-1] - graph_start) + 5,
 283                     kb_to_graph(i), (1000000 - i) / 1000);
 284         }
 285         svg("\n");
 286
 287         /* now plot the graph itself */
 288         for (i = 1; i < samples ; i++) {
 289                 int bottom;
 290                 int top;
 291
 292                 bottom = 0;
 293                 top = 0;
 294
 295                 /* put all the small pss blocks into the bottom */
 296                 ps = ps_first;
 297                 while (ps->next_ps) {
 298                         ps = ps->next_ps;
 299                         if (!ps)
 300                                 continue;
 301                         if (ps->sample[i].pss <= (100 * scale_y))
 302                                 top += ps->sample[i].pss;
 303                 };
 304                 svg("    <rect class=\"clrw\" style=\"fill: %s\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 305                     "rgb(64,64,64)",
 306                     time_to_graph(sampletime[i - 1] - graph_start),
 307                     kb_to_graph(1000000.0 - top),
 308                     time_to_graph(sampletime[i] - sampletime[i - 1]),
 309                     kb_to_graph(top - bottom));
 310
 311                 bottom = top;
 312
 313                 /* now plot the ones that are of significant size */
 314                 ps = ps_first;
 315                 while (ps->next_ps) {
 316                         ps = ps->next_ps;
 317                         if (!ps)
 318                                 continue;
 319                         /* don't draw anything smaller than 2mb */
 320                         if (ps->sample[i].pss > (100 * scale_y)) {
 321                                 top = bottom + ps->sample[i].pss;
 322                                 svg("    <rect class=\"clrw\" style=\"fill: %s\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 323                                     colorwheel[ps->pid % 12],
 324                                     time_to_graph(sampletime[i - 1] - graph_start),
 325                                     kb_to_graph(1000000.0 - top),
 326                                     time_to_graph(sampletime[i] - sampletime[i - 1]),
 327                                     kb_to_graph(top - bottom));
 328                                 bottom = top;
 329                         }
 330                 }
 331         }
 332
 333         /* overlay all the text labels */
 334         for (i = 1; i < samples ; i++) {
 335                 int bottom;
 336                 int top;
 337
 338                 bottom = 0;
 339                 top = 0;
 340
 341                 /* put all the small pss blocks into the bottom */
 342                 ps = ps_first;
 343                 while (ps->next_ps) {
 344                         ps = ps->next_ps;
 345                         if (!ps)
 346                                 continue;
 347                         if (ps->sample[i].pss <= (100 * scale_y))
 348                                 top += ps->sample[i].pss;
 349                 };
 350
 351                 bottom = top;
 352
 353                 /* now plot the ones that are of significant size */
 354                 ps = ps_first;
 355                 while (ps->next_ps) {
 356                         ps = ps->next_ps;
 357                         if (!ps)
 358                                 continue;
 359                         /* don't draw anything smaller than 2mb */
 360                         if (ps->sample[i].pss > (100 * scale_y)) {
 361                                 top = bottom + ps->sample[i].pss;
 362                                 /* draw a label with the process / PID */
 363                                 if ((i == 1) || (ps->sample[i - 1].pss <= (100 * scale_y)))
 364                                         svg("  <text x=\"%.03f\" y=\"%.03f\">%s [%i]</text>\n",
 365                                             time_to_graph(sampletime[i] - graph_start),
 366                                             kb_to_graph(1000000.0 - bottom - ((top -  bottom) / 2)),
 367                                             ps->name,
 368                                             ps->pid);
 369                                 bottom = top;
 370                         }
 371                 }
 372         }
 373
 374         /* debug output - full data dump */
 375         svg("\n\n<!-- PSS map - csv format -->\n");
 376         ps = ps_first;
 377         while (ps->next_ps) {
 378                 ps = ps->next_ps;
 379                 if (!ps)
 380                         continue;
 381                 svg("<!-- %s [%d] pss=", ps->name, ps->pid);
 382                 for (i = 0; i < samples ; i++) {
 383                         svg("%d," , ps->sample[i].pss);
 384                 }
 385                 svg(" -->\n");
 386         }
 387
 388 }
 389
 390 static void svg_io_bi_bar(void)
 391 {
 392         double max = 0.0;
 393         double range;
 394         int max_here = 0;
 395         int i;
 396
 397         svg("<!-- IO utilization graph - In -->\n");
 398
 399         svg("<text class=\"t2\" x=\"5\" y=\"-15\">IO utilization - read</text>\n");
 400
 401         /*
 402          * calculate rounding range
 403          *
 404          * We need to round IO data since IO block data is not updated on
 405          * each poll. Applying a smoothing function loses some burst data,
 406          * so keep the smoothing range short.
 407          */
 408         range = 0.25 / (1.0 / hz);
 409         if (range < 2.0)
 410                 range = 2.0; /* no smoothing */
 411
 412         /* surrounding box */
 413         svg_graph_box(5);
 414
 415         /* find the max IO first */
 416         for (i = 1; i < samples; i++) {
 417                 int start;
 418                 int stop;
 419                 double tot;
 420
 421                 start = max(i - ((range / 2) - 1), 0);
 422                 stop = min(i + (range / 2), samples - 1);
 423
 424                 tot = (double)(blockstat[stop].bi - blockstat[start].bi)
 425                       / (stop - start);
 426                 if (tot > max) {
 427                         max = tot;
 428                         max_here = i;
 429                 }
 430                 tot = (double)(blockstat[stop].bo - blockstat[start].bo)
 431                       / (stop - start);
 432                 if (tot > max)
 433                         max = tot;
 434         }
 435
 436         /* plot bi */
 437         for (i = 1; i < samples; i++) {
 438                 int start;
 439                 int stop;
 440                 double tot;
 441                 double pbi;
 442
 443                 start = max(i - ((range / 2) - 1), 0);
 444                 stop = min(i + (range / 2), samples);
 445
 446                 tot = (double)(blockstat[stop].bi - blockstat[start].bi)
 447                       / (stop - start);
 448                 pbi = tot / max;
 449
 450                 if (pbi > 0.001)
 451                         svg("<rect class=\"bi\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 452                             time_to_graph(sampletime[i - 1] - graph_start),
 453                             (scale_y * 5) - (pbi * (scale_y * 5)),
 454                             time_to_graph(sampletime[i] - sampletime[i - 1]),
 455                             pbi * (scale_y * 5));
 456
 457                 /* labels around highest value */
 458                 if (i == max_here) {
 459                         svg("  <text class=\"sec\" x=\"%.03f\" y=\"%.03f\">%0.2fmb/sec</text>\n",
 460                             time_to_graph(sampletime[i] - graph_start) + 5,
 461                             ((scale_y * 5) - (pbi * (scale_y * 5))) + 15,
 462                             max / 1024.0 / (interval / 1000000000.0));
 463                 }
 464         }
 465 }
 466
 467 static void svg_io_bo_bar(void)
 468 {
 469         double max = 0.0;
 470         double range;
 471         int max_here = 0;
 472         int i;
 473
 474         svg("<!-- IO utilization graph - out -->\n");
 475
 476         svg("<text class=\"t2\" x=\"5\" y=\"-15\">IO utilization - write</text>\n");
 477
 478         /*
 479          * calculate rounding range
 480          *
 481          * We need to round IO data since IO block data is not updated on
 482          * each poll. Applying a smoothing function loses some burst data,
 483          * so keep the smoothing range short.
 484          */
 485         range = 0.25 / (1.0 / hz);
 486         if (range < 2.0)
 487                 range = 2.0; /* no smoothing */
 488
 489         /* surrounding box */
 490         svg_graph_box(5);
 491
 492         /* find the max IO first */
 493         for (i = 1; i < samples; i++) {
 494                 int start;
 495                 int stop;
 496                 double tot;
 497
 498                 start = max(i - ((range / 2) - 1), 0);
 499                 stop = min(i + (range / 2), samples - 1);
 500
 501                 tot = (double)(blockstat[stop].bi - blockstat[start].bi)
 502                       / (stop - start);
 503                 if (tot > max)
 504                         max = tot;
 505                 tot = (double)(blockstat[stop].bo - blockstat[start].bo)
 506                       / (stop - start);
 507                 if (tot > max) {
 508                         max = tot;
 509                         max_here = i;
 510                 }
 511         }
 512
 513         /* plot bo */
 514         for (i = 1; i < samples; i++) {
 515                 int start;
 516                 int stop;
 517                 double tot;
 518                 double pbo;
 519
 520                 start = max(i - ((range / 2) - 1), 0);
 521                 stop = min(i + (range / 2), samples);
 522
 523                 tot = (double)(blockstat[stop].bo - blockstat[start].bo)
 524                       / (stop - start);
 525                 pbo = tot / max;
 526
 527                 if (pbo > 0.001)
 528                         svg("<rect class=\"bo\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 529                             time_to_graph(sampletime[i - 1] - graph_start),
 530                             (scale_y * 5) - (pbo * (scale_y * 5)),
 531                             time_to_graph(sampletime[i] - sampletime[i - 1]),
 532                             pbo * (scale_y * 5));
 533
 534                 /* labels around highest bo value */
 535                 if (i == max_here) {
 536                         svg("  <text class=\"sec\" x=\"%.03f\" y=\"%.03f\">%0.2fmb/sec</text>\n",
 537                             time_to_graph(sampletime[i] - graph_start) + 5,
 538                             ((scale_y * 5) - (pbo * (scale_y * 5))),
 539                             max / 1024.0 / (interval / 1000000000.0));
 540                 }
 541         }
 542 }
 543
 544
 545 static void svg_cpu_bar(void)
 546 {
 547         int i;
 548
 549         svg("<!-- CPU utilization graph -->\n");
 550
 551         svg("<text class=\"t2\" x=\"5\" y=\"-15\">CPU utilization</text>\n");
 552         /* surrounding box */
 553         svg_graph_box(5);
 554
 555         /* bars for each sample, proportional to the CPU util. */
 556         for (i = 1; i < samples; i++) {
 557                 int c;
 558                 double trt;
 559                 double ptrt;
 560
 561                 ptrt = trt = 0.0;
 562
 563                 for (c = 0; c < cpus; c++)
 564                         trt += cpustat[c].sample[i].runtime - cpustat[c].sample[i - 1].runtime;
 565
 566                 trt = trt / 1000000000.0;
 567
 568                 trt = trt / (double)cpus;
 569
 570                 if (trt > 0.0)
 571                         ptrt = trt / (sampletime[i] - sampletime[i - 1]);
 572
 573                 if (ptrt > 1.0)
 574                         ptrt = 1.0;
 575
 576                 if (ptrt > 0.001) {
 577                         svg("<rect class=\"cpu\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 578                             time_to_graph(sampletime[i - 1] - graph_start),
 579                             (scale_y * 5) - (ptrt * (scale_y * 5)),
 580                             time_to_graph(sampletime[i] - sampletime[i - 1]),
 581                             ptrt * (scale_y * 5));
 582                 }
 583         }
 584 }
 585
 586 static void svg_wait_bar(void)
 587 {
 588         int i;
 589
 590         svg("<!-- Wait time aggregation box -->\n");
 591
 592         svg("<text class=\"t2\" x=\"5\" y=\"-15\">CPU wait</text>\n");
 593
 594         /* surrounding box */
 595         svg_graph_box(5);
 596
 597         /* bars for each sample, proportional to the CPU util. */
 598         for (i = 1; i < samples; i++) {
 599                 int c;
 600                 double twt;
 601                 double ptwt;
 602
 603                 ptwt = twt = 0.0;
 604
 605                 for (c = 0; c < cpus; c++)
 606                         twt += cpustat[c].sample[i].waittime - cpustat[c].sample[i - 1].waittime;
 607
 608                 twt = twt / 1000000000.0;
 609
 610                 twt = twt / (double)cpus;
 611
 612                 if (twt > 0.0)
 613                         ptwt = twt / (sampletime[i] - sampletime[i - 1]);
 614
 615                 if (ptwt > 1.0)
 616                         ptwt = 1.0;
 617
 618                 if (ptwt > 0.001) {
 619                         svg("<rect class=\"wait\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 620                             time_to_graph(sampletime[i - 1] - graph_start),
 621                             ((scale_y * 5) - (ptwt * (scale_y * 5))),
 622                             time_to_graph(sampletime[i] - sampletime[i - 1]),
 623                             ptwt * (scale_y * 5));
 624                 }
 625         }
 626 }
 627
 628
 629 static void svg_entropy_bar(void)
 630 {
 631         int i;
 632
 633         svg("<!-- entropy pool graph -->\n");
 634
 635         svg("<text class=\"t2\" x=\"5\" y=\"-15\">Entropy pool size</text>\n");
 636         /* surrounding box */
 637         svg_graph_box(5);
 638
 639         /* bars for each sample, scale 0-4096 */
 640         for (i = 1; i < samples; i++) {
 641                 /* svg("<!-- entropy %.03f %i -->\n", sampletime[i], entropy_avail[i]); */
 642                 svg("<rect class=\"cpu\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 643                     time_to_graph(sampletime[i - 1] - graph_start),
 644                     ((scale_y * 5) - ((entropy_avail[i] / 4096.) * (scale_y * 5))),
 645                     time_to_graph(sampletime[i] - sampletime[i - 1]),
 646                     (entropy_avail[i] / 4096.) * (scale_y * 5));
 647         }
 648 }
 649
 650
 651 static struct ps_struct *get_next_ps(struct ps_struct *ps)
 652 {
 653         /*
 654          * walk the list of processes and return the next one to be
 655          * painted
 656          */
 657         if (ps == ps_first)
 658                 return ps->next_ps;
 659
 660         /* go deep */
 661         if (ps->children)
 662                 return ps->children;
 663
 664         /* find siblings */
 665         if (ps->next)
 666                 return ps->next;
 667
 668         /* go back for parent siblings */
 669         while (1) {
 670                 if (ps->parent)
 671                         if (ps->parent->next)
 672                                 return ps->parent->next;
 673                 ps = ps->parent;
 674                 if (!ps)
 675                         return ps;
 676         }
 677
 678         return NULL;
 679 }
 680
 681
 682 static int ps_filter(struct ps_struct *ps)
 683 {
 684         if (!filter)
 685                 return 0;
 686
 687         /* can't draw data when there is only 1 sample (need start + stop) */
 688         if (ps->first == ps->last)
 689                 return -1;
 690
 691         /* don't filter kthreadd */
 692         if (ps->pid == 2)
 693                 return 0;
 694
 695         /* drop stuff that doesn't use any real CPU time */
 696         if (ps->total <= 0.001)
 697                 return -1;
 698
 699         return 0;
 700 }
 701
 702
 703 static void svg_do_initcall(int count_only)
 704 {
 705         FILE *f;
 706         double t;
 707         char func[256];
 708         int ret;
 709         int usecs;
 710
 711         /* can't plot initcall when disabled or in relative mode */
 712         if (!initcall || relative) {
 713                 kcount = 0;
 714                 return;
 715         }
 716
 717         if (!count_only) {
 718                 svg("<!-- initcall -->\n");
 719
 720                 svg("<text class=\"t2\" x=\"5\" y=\"-15\">Kernel init threads</text>\n");
 721                 /* surrounding box */
 722                 svg_graph_box(kcount);
 723         }
 724
 725         kcount = 0;
 726
 727         /*
 728          * Initcall graphing - parses dmesg buffer and displays kernel threads
 729          * This somewhat uses the same methods and scaling to show processes
 730          * but looks a lot simpler. It's overlaid entirely onto the PS graph
 731          * when appropriate.
 732          */
 733
 734         f = popen("dmesg", "r");
 735         if (!f)
 736                 return;
 737
 738         while (!feof(f)) {
 739                 int c;
 740                 int z = 0;
 741                 char l[256];
 742
 743                 if (fgets(l, sizeof(l) - 1, f) == NULL)
 744                         continue;
 745
 746                 c = sscanf(l, "[%lf] initcall %s %*s %d %*s %d %*s",
 747                            &t, func, &ret, &usecs);
 748                 if (c != 4) {
 749                         /* also parse initcalls done by module loading */
 750                         c = sscanf(l, "[%lf] initcall %s %*s %*s %d %*s %d %*s",
 751                                    &t, func, &ret, &usecs);
 752                         if (c != 4)
 753                                 continue;
 754                 }
 755
 756                 /* chop the +0xXX/0xXX stuff */
 757                 while(func[z] != '+')
 758                         z++;
 759                 func[z] = 0;
 760
 761                 if (count_only) {
 762                         /* filter out irrelevant stuff */
 763                         if (usecs >= 1000)
 764                                 kcount++;
 765                         continue;
 766                 }
 767
 768                 svg("<!-- thread=\"%s\" time=\"%.3f\" elapsed=\"%d\" result=\"%d\" -->\n",
 769                     func, t, usecs, ret);
 770
 771                 if (usecs < 1000)
 772                         continue;
 773
 774                 /* rect */
 775                 svg("  <rect class=\"krnl\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 776                     time_to_graph(t - (usecs / 1000000.0)),
 777                     ps_to_graph(kcount),
 778                     time_to_graph(usecs / 1000000.0),
 779                     ps_to_graph(1));
 780
 781                 /* label */
 782                 svg("  <text x=\"%.03f\" y=\"%.03f\">%s <tspan class=\"run\">%.03fs</tspan></text>\n",
 783                     time_to_graph(t - (usecs / 1000000.0)) + 5,
 784                     ps_to_graph(kcount) + 15,
 785                     func,
 786                     usecs / 1000000.0);
 787
 788                 kcount++;
 789         }
 790
 791         fclose(f);
 792 }
 793
 794
 795 static void svg_ps_bars(void)
 796 {
 797         struct ps_struct *ps;
 798         int i = 0;
 799         int j = 0;
 800         int w;
 801         int pid;
 802
 803         svg("<!-- Process graph -->\n");
 804
 805         svg("<text class=\"t2\" x=\"5\" y=\"-15\">Processes</text>\n");
 806
 807         /* surrounding box */
 808         svg_graph_box(pcount);
 809
 810         /* pass 2 - ps boxes */
 811         ps = ps_first;
 812         while ((ps = get_next_ps(ps))) {
 813                 double starttime;
 814                 int t;
 815
 816                 if (!ps)
 817                         continue;
 818
 819                 /* leave some trace of what we actually filtered etc. */
 820                 svg("<!-- %s [%i] ppid=%i runtime=%.03fs -->\n", ps->name, ps->pid,
 821                     ps->ppid, ps->total);
 822
 823                 /* it would be nice if we could use exec_start from /proc/pid/sched,
 824                  * but it's unreliable and gives bogus numbers */
 825                 starttime = sampletime[ps->first];
 826
 827                 if (!ps_filter(ps)) {
 828                         /* remember where _to_ our children need to draw a line */
 829                         ps->pos_x = time_to_graph(starttime - graph_start);
 830                         ps->pos_y = ps_to_graph(j+1); /* bottom left corner */
 831                 } else {
 832                         /* hook children to our parent coords instead */
 833                         ps->pos_x = ps->parent->pos_x;
 834                         ps->pos_y = ps->parent->pos_y;
 835
 836                         /* if this is the last child, we might still need to draw a connecting line */
 837                         if ((!ps->next) && (ps->parent))
 838                                 svg("  <line class=\"dot\" x1=\"%.03f\" y1=\"%.03f\" x2=\"%.03f\" y2=\"%.03f\" />\n",
 839                                     ps->parent->pos_x,
 840                                     ps_to_graph(j-1) + 10.0, /* whee, use the last value here */
 841                                     ps->parent->pos_x,
 842                                     ps->parent->pos_y);
 843                         continue;
 844                 }
 845
 846                 svg("  <rect class=\"ps\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 847                     time_to_graph(starttime - graph_start),
 848                     ps_to_graph(j),
 849                     time_to_graph(sampletime[ps->last] - starttime),
 850                     ps_to_graph(1));
 851
 852                 /* paint cpu load over these */
 853                 for (t = ps->first + 1; t < ps->last; t++) {
 854                         double rt, prt;
 855                         double wt, wrt;
 856
 857                         /* calculate over interval */
 858                         rt = ps->sample[t].runtime - ps->sample[t-1].runtime;
 859                         wt = ps->sample[t].waittime - ps->sample[t-1].waittime;
 860
 861                         prt = (rt / 1000000000) / (sampletime[t] - sampletime[t-1]);
 862                         wrt = (wt / 1000000000) / (sampletime[t] - sampletime[t-1]);
 863
 864                         /* this can happen if timekeeping isn't accurate enough */
 865                         if (prt > 1.0)
 866                                 prt = 1.0;
 867                         if (wrt > 1.0)
 868                                 wrt = 1.0;
 869
 870                         if ((prt < 0.1) && (wrt < 0.1)) /* =~ 26 (color threshold) */
 871                                 continue;
 872
 873                         svg("    <rect class=\"wait\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 874                             time_to_graph(sampletime[t - 1] - graph_start),
 875                             ps_to_graph(j),
 876                             time_to_graph(sampletime[t] - sampletime[t - 1]),
 877                             ps_to_graph(wrt));
 878
 879                         /* draw cpu over wait - TODO figure out how/why run + wait > interval */
 880                         svg("    <rect class=\"cpu\" x=\"%.03f\" y=\"%.03f\" width=\"%.03f\" height=\"%.03f\" />\n",
 881                             time_to_graph(sampletime[t - 1] - graph_start),
 882                             ps_to_graph(j + (1.0 - prt)),
 883                             time_to_graph(sampletime[t] - sampletime[t - 1]),
 884                             ps_to_graph(prt));
 885                 }
 886
 887                 /* determine where to display the process name */
 888                 if (sampletime[ps->last] - sampletime[ps->first] < 1.5)
 889                         /* too small to fit label inside the box */
 890                         w = ps->last;
 891                 else
 892                         w = ps->first;
 893
 894                 /* text label of process name */
 895                 svg("  <text x=\"%.03f\" y=\"%.03f\">%s [%i] <tspan class=\"run\">%.03fs</tspan></text>\n",
 896                     time_to_graph(sampletime[w] - graph_start) + 5.0,
 897                     ps_to_graph(j) + 14.0,
 898                     ps->name,
 899                     ps->pid,
 900                     (ps->sample[ps->last].runtime - ps->sample[ps->first].runtime) / 1000000000.0);
 901                 /* paint lines to the parent process */
 902                 if (ps->parent) {
 903                         /* horizontal part */
 904                         svg("  <line class=\"dot\" x1=\"%.03f\" y1=\"%.03f\" x2=\"%.03f\" y2=\"%.03f\" />\n",
 905                             time_to_graph(starttime - graph_start),
 906                             ps_to_graph(j) + 10.0,
 907                             ps->parent->pos_x,
 908                             ps_to_graph(j) + 10.0);
 909
 910                         /* one vertical line connecting all the horizontal ones up */
 911                         if (!ps->next)
 912                                 svg("  <line class=\"dot\" x1=\"%.03f\" y1=\"%.03f\" x2=\"%.03f\" y2=\"%.03f\" />\n",
 913                                     ps->parent->pos_x,
 914                                     ps_to_graph(j) + 10.0,
 915                                     ps->parent->pos_x,
 916                                     ps->parent->pos_y);
 917                 }
 918
 919                 j++; /* count boxes */
 920
 921                 svg("\n");
 922         }
 923
 924         /* last pass - determine when idle */
 925         pid = getpid();
 926         /* make sure we start counting from the point where we actually have
 927          * data: assume that bootchart's first sample is when data started
 928          */
 929         ps = ps_first;
 930         while (ps->next_ps) {
 931                 ps = ps->next_ps;
 932                 if (ps->pid == pid)
 933                         break;
 934         }
 935
 936         for (i = ps->first; i < samples - (hz / 2); i++) {
 937                 double crt;
 938                 double brt;
 939                 int c;
 940
 941                 /* subtract bootchart cpu utilization from total */
 942                 crt = 0.0;
 943                 for (c = 0; c < cpus; c++)
 944                         crt += cpustat[c].sample[i + ((int)hz / 2)].runtime - cpustat[c].sample[i].runtime;
 945                 brt = ps->sample[i + ((int)hz / 2)].runtime - ps->sample[i].runtime;
 946
 947                 /*
 948                  * our definition of "idle":
 949                  *
 950                  * if for (hz / 2) we've used less CPU than (interval / 2) ...
 951                  * defaults to 4.0%, which experimentally, is where atom idles
 952                  */
 953                 if ((crt - brt) < (interval / 2.0)) {
 954                         idletime = sampletime[i] - graph_start;
 955                         svg("\n<!-- idle detected at %.03f seconds -->\n",
 956                             idletime);
 957                         svg("<line class=\"idle\" x1=\"%.03f\" y1=\"%.03f\" x2=\"%.03f\" y2=\"%.03f\" />\n",
 958                             time_to_graph(idletime),
 959                             -scale_y,
 960                             time_to_graph(idletime),
 961                             ps_to_graph(pcount) + scale_y);
 962                         svg("<text class=\"idle\" x=\"%.03f\" y=\"%.03f\">%.01fs</text>\n",
 963                             time_to_graph(idletime) + 5.0,
 964                             ps_to_graph(pcount) + scale_y,
 965                             idletime);
 966                         break;
 967                 }
 968         }
 969 }
 970
 971
 972 static void svg_top_ten_cpu(void)
 973 {
 974         struct ps_struct *top[10];
 975         struct ps_struct emptyps;
 976         struct ps_struct *ps;
 977         int n, m;
 978
 979         memset(&emptyps, 0, sizeof(struct ps_struct));
 980         for (n=0; n < 10; n++)
 981                 top[n] = &emptyps;
 982
 983         /* walk all ps's and setup ptrs */
 984         ps = ps_first;
 985         while ((ps = get_next_ps(ps))) {
 986                 for (n = 0; n < 10; n++) {
 987                         if (ps->total <= top[n]->total)
 988                                 continue;
 989                         /* cascade insert */
 990                         for (m = 9; m > n; m--)
 991                                 top[m] = top[m-1];
 992                         top[n] = ps;
 993                         break;
 994                 }
 995         }
 996
 997         svg("<text class=\"t2\" x=\"20\" y=\"0\">Top CPU consumers:</text>\n");
 998         for (n = 0; n < 10; n++)
 999                 svg("<text class=\"t3\" x=\"20\" y=\"%d\">%3.03fs - %s[%d]</text>\n",
1000                     20 + (n * 13),
1001                     top[n]->total,
1002                     top[n]->name,
1003                     top[n]->pid);
1004 }
1005
1006
1007 static void svg_top_ten_pss(void)
1008 {
1009         struct ps_struct *top[10];
1010         struct ps_struct emptyps;
1011         struct ps_struct *ps;
1012         int n, m;
1013
1014         memset(&emptyps, 0, sizeof(struct ps_struct));
1015         for (n=0; n < 10; n++)
1016                 top[n] = &emptyps;
1017
1018         /* walk all ps's and setup ptrs */
1019         ps = ps_first;
1020         while ((ps = get_next_ps(ps))) {
1021                 for (n = 0; n < 10; n++) {
1022                         if (ps->pss_max <= top[n]->pss_max)
1023                                 continue;
1024                         /* cascade insert */
1025                         for (m = 9; m > n; m--)
1026                                 top[m] = top[m-1];
1027                         top[n] = ps;
1028                         break;
1029                 }
1030         }
1031
1032         svg("<text class=\"t2\" x=\"20\" y=\"0\">Top PSS consumers:</text>\n");
1033         for (n = 0; n < 10; n++)
1034                 svg("<text class=\"t3\" x=\"20\" y=\"%d\">%dK - %s[%d]</text>\n",
1035                     20 + (n * 13),
1036                     top[n]->pss_max,
1037                     top[n]->name,
1038                     top[n]->pid);
1039 }
1040
1041
1042 void svg_do(void)
1043 {
1044         struct ps_struct *ps;
1045
1046         memset(&str, 0, sizeof(str));
1047
1048         ps = ps_first;
1049
1050         /* count initcall thread count first */
1051         svg_do_initcall(1);
1052         ksize = (kcount ? ps_to_graph(kcount) + (scale_y * 2) : 0);
1053
1054         /* then count processes */
1055         while ((ps = get_next_ps(ps))) {
1056                 if (!ps_filter(ps))
1057                         pcount++;
1058                 else
1059                         pfiltered++;
1060         }
1061         psize = ps_to_graph(pcount) + (scale_y * 2);
1062
1063         esize = (entropy ? scale_y * 7 : 0);
1064
1065         /* after this, we can draw the header with proper sizing */
1066         svg_header();
1067
1068         svg("<g transform=\"translate(10,400)\">\n");
1069         svg_io_bi_bar();
1070         svg("</g>\n\n");
1071
1072         svg("<g transform=\"translate(10,%.03f)\">\n", 400.0 + (scale_y * 7.0));
1073         svg_io_bo_bar();
1074         svg("</g>\n\n");
1075
1076         svg("<g transform=\"translate(10,%.03f)\">\n", 400.0 + (scale_y * 14.0));
1077         svg_cpu_bar();
1078         svg("</g>\n\n");
1079
1080         svg("<g transform=\"translate(10,%.03f)\">\n", 400.0 + (scale_y * 21.0));
1081         svg_wait_bar();
1082         svg("</g>\n\n");
1083
1084         if (kcount) {
1085                 svg("<g transform=\"translate(10,%.03f)\">\n", 400.0 + (scale_y * 28.0));
1086                 svg_do_initcall(0);
1087                 svg("</g>\n\n");
1088         }
1089
1090         svg("<g transform=\"translate(10,%.03f)\">\n", 400.0 + (scale_y * 28.0) + ksize);
1091         svg_ps_bars();
1092         svg("</g>\n\n");
1093
1094         svg("<g transform=\"translate(10,  0)\">\n");
1095         svg_title();
1096         svg("</g>\n\n");
1097
1098         svg("<g transform=\"translate(10,200)\">\n");
1099         svg_top_ten_cpu();
1100         svg("</g>\n\n");
1101
1102         if (entropy) {
1103                 svg("<g transform=\"translate(10,%.03f)\">\n", 400.0 + (scale_y * 28.0) + ksize + psize);
1104                 svg_entropy_bar();
1105                 svg("</g>\n\n");
1106         }
1107
1108         if (pss) {
1109                 svg("<g transform=\"translate(10,%.03f)\">\n", 400.0 + (scale_y * 28.0) + ksize + psize + esize);
1110                 svg_pss_graph();
1111                 svg("</g>\n\n");
1112
1113                 svg("<g transform=\"translate(410,200)\">\n");
1114                 svg_top_ten_pss();
1115                 svg("</g>\n\n");
1116         }
1117
1118         /* svg footer */
1119         svg("\n</svg>\n");
1120 }