2 * Copyright (C) 2012 Fusion-io
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.
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.
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
17 * Parts of this file were imported from Jens Axboe's blktrace sources (also GPL)
19 #include <sys/types.h>
28 #include <asm/types.h>
36 static int io_graph_scale = 8;
37 static int graph_width = 700;
38 static int graph_height = 250;
39 static int graph_circle_extra = 30;
40 static int graph_inner_x_margin = 2;
41 static int graph_inner_y_margin = 2;
42 static int graph_tick_len = 5;
43 static int graph_left_pad = 120;
44 static int tick_label_pad = 16;
45 static int tick_font_size = 15;
46 static char *font_family = "sans-serif";
48 /* this is the title for the whole page */
49 static int plot_title_height = 50;
50 static int plot_title_font_size = 25;
52 /* this is the label at the top of each plot */
53 static int plot_label_height = 60;
54 static int plot_label_font_size = 20;
56 /* label for each axis is slightly smaller */
57 static int axis_label_font_size = 16;
59 int legend_x_off = 45;
60 int legend_y_off = -10;
61 int legend_font_size = 15;
62 int legend_width = 80;
64 static int rolling_avg_secs = 0;
66 static int line_len = 1024;
67 static char line[1024];
69 static int final_height = 0;
70 static int final_width = 0;
72 static char *colors[] = {
84 extern unsigned int longest_proc_name;
86 char *pick_color(void)
88 static int color_index;
89 char *ret = colors[color_index];
93 ret = colors[color_index];
99 char *pick_fio_color(void)
101 static int fio_color_index;
102 char *ret = colors[fio_color_index];
106 ret = colors[fio_color_index];
108 fio_color_index += 2;
112 static int cpu_color_index;
114 char *pick_cpu_color(void)
116 char *ret = colors[cpu_color_index];
119 ret = colors[cpu_color_index];
125 void reset_cpu_color(void)
130 struct graph_line_data *alloc_line_data(unsigned int min_seconds,
131 unsigned int max_seconds,
132 unsigned int stop_seconds)
134 int size = sizeof(struct graph_line_data) + (stop_seconds + 1) * sizeof(struct graph_line_pair);
135 struct graph_line_data *gld;
137 gld = calloc(1, size);
139 fprintf(stderr, "Unable to allocate memory for graph data\n");
142 gld->min_seconds = min_seconds;
143 gld->max_seconds = max_seconds;
144 gld->stop_seconds = stop_seconds;
148 struct graph_dot_data *alloc_dot_data(unsigned int min_seconds,
149 unsigned int max_seconds,
150 u64 min_offset, u64 max_offset,
151 unsigned int stop_seconds,
152 char *color, char *label)
156 int rows = graph_height * io_graph_scale;
157 int cols = graph_width;
158 struct graph_dot_data *gdd;
160 size = sizeof(struct graph_dot_data);
162 /* the number of bits */
163 arr_size = (rows + 1) * cols;
165 /* the number of bytes */
166 arr_size = (arr_size + 7) / 8;
168 gdd = calloc(1, size + arr_size);
170 fprintf(stderr, "Unable to allocate memory for graph data\n");
173 gdd->min_seconds = min_seconds;
174 gdd->max_seconds = max_seconds;
175 gdd->stop_seconds = stop_seconds;
178 gdd->min_offset = min_offset;
179 gdd->max_offset = max_offset;
183 if (strlen(label) > longest_proc_name)
184 longest_proc_name = strlen(label);
189 void set_gdd_bit(struct graph_dot_data *gdd, u64 offset, double bytes, double time)
191 double bytes_per_row = (double)(gdd->max_offset - gdd->min_offset + 1) / gdd->rows;
192 double secs_per_col = (double)(gdd->max_seconds - gdd->min_seconds) / gdd->cols;
200 double mod = bytes_per_row;
202 if (offset > gdd->max_offset || offset < gdd->min_offset)
204 time = time / 1000000000.0;
205 if (time < gdd->min_seconds || time > gdd->max_seconds)
208 while (bytes > 0 && offset <= gdd->max_offset) {
209 row = (double)(offset - gdd->min_offset) / bytes_per_row;
210 col = (time - gdd->min_seconds) / secs_per_col;
212 col_int = floor(col);
213 row_int = floor(row);
214 bit_index = row_int * gdd->cols + col_int;
215 arr_index = bit_index / 8;
216 bit_mod = bit_index % 8;
218 gdd->data[arr_index] |= 1 << bit_mod;
224 static double rolling_avg(struct graph_line_pair *data, int index, int distance)
231 if (distance > index) {
234 start = index - distance;
237 while (start <= index) {
240 if (data[start].count)
241 avg = ((double)data[start].sum) / data[start].count;
249 return sum / distance;
252 static void write_check(int fd, char *buf, size_t size)
256 ret = write(fd, buf, size);
257 if (ret != (ssize_t)size) {
259 perror("write failed");
261 fprintf(stderr, "error: short write\n");
266 void write_svg_header(int fd)
268 char *spaces = " \n";
269 char *header = "<svg xmlns=\"http://www.w3.org/2000/svg\">\n";
270 char *filter1 ="<filter id=\"shadow\">\n "
271 "<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"4\" dy=\"4\" />\n "
272 "<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n "
273 "<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
275 char *filter2 ="<filter id=\"textshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n "
276 "<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"1\" dy=\"1\" />\n "
277 "<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"1.5\" />\n "
278 "<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
280 char *filter3 ="<filter id=\"labelshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n "
281 "<feOffset result=\"offOut\" in=\"SourceGraphic\" dx=\"3\" dy=\"3\" />\n "
282 "<feColorMatrix result=\"matrixOut\" in=\"offOut\" type=\"matrix\" "
283 "values=\"0.2 0 0 0 0 0 0.2 0 0 0 0 0 0.2 0 0 0 0 0 1 0\" /> "
284 "<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n "
285 "<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
287 char *defs_start = "<defs>\n";
288 char *defs_close = "</defs>\n";
292 write_check(fd, header, strlen(header));
293 /* write a bunch of spaces so we can stuff in the width and height later */
294 write_check(fd, spaces, strlen(spaces));
295 write_check(fd, spaces, strlen(spaces));
296 write_check(fd, spaces, strlen(spaces));
298 write_check(fd, defs_start, strlen(defs_start));
299 write_check(fd, filter1, strlen(filter1));
300 write_check(fd, filter2, strlen(filter2));
301 write_check(fd, filter3, strlen(filter3));
302 write_check(fd, defs_close, strlen(defs_close));
305 /* svg y offset for the traditional 0,0 (bottom left corner) of the plot */
306 static int axis_y(void)
308 return plot_label_height + graph_height + graph_inner_y_margin;
311 /* this gives you the correct pixel for a given offset from the bottom left y axis */
312 static double axis_y_off_double(double y)
314 return plot_label_height + graph_height - y;
317 static int axis_y_off(int y)
319 return axis_y_off_double(y);
322 /* svg x axis offset from 0 */
323 static int axis_x(void)
325 return graph_left_pad;
328 /* the correct pixel for a given X offset */
329 static double axis_x_off_double(double x)
331 return graph_left_pad + graph_inner_x_margin + x;
334 static int axis_x_off(int x)
336 return (int)axis_x_off_double(x);
340 * this draws a backing rectangle for the plot and it
341 * also creates a new svg element so our offsets can
342 * be relative to this one plot.
344 void setup_axis(struct plot *plot)
348 int bump_height = tick_font_size * 3 + axis_label_font_size;
349 int local_legend_width = legend_width;
352 local_legend_width = 0;
354 plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + local_legend_width;
355 plot->total_height = axis_y() + tick_label_pad + tick_font_size;
357 if (plot->add_xlabel)
358 plot->total_height += bump_height;
361 snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
362 "height=\"%d\" fill=\"white\" stroke=\"none\"/>",
363 plot->start_x_offset,
364 plot->start_y_offset, plot->total_width + 40,
365 plot->total_height + 20);
367 write_check(fd, line, len);
369 snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
370 "filter=\"url(#shadow)\" "
371 "height=\"%d\" fill=\"white\" stroke=\"none\"/>",
372 plot->start_x_offset + 15,
373 plot->start_y_offset, plot->total_width, plot->total_height);
375 write_check(fd, line, len);
376 plot->total_height += 20;
377 plot->total_width += 20;
379 if (plot->total_height + plot->start_y_offset > final_height)
380 final_height = plot->total_height + plot->start_y_offset;
381 if (plot->start_x_offset + plot->total_width + 40 > final_width)
382 final_width = plot->start_x_offset + plot->total_width + 40;
384 /* create an svg object for all our coords to be relative against */
385 snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset);
386 write_check(fd, line, strlen(line));
388 snprintf(line, 1024, "<path d=\"M%d %d h %d V %d H %d Z\" stroke=\"black\" stroke-width=\"2\" fill=\"none\"/>\n",
390 graph_width + graph_inner_x_margin * 2, axis_y_off(graph_height) - graph_inner_y_margin,
393 write_check(fd, line, len);
397 * this draws a backing rectangle for the plot and it
398 * also creates a new svg element so our offsets can
399 * be relative to this one plot.
401 void setup_axis_spindle(struct plot *plot)
405 int bump_height = tick_font_size * 3 + axis_label_font_size;
409 plot->total_width = axis_x_off(graph_width) + legend_width;
410 plot->total_height = axis_y() + tick_label_pad + tick_font_size;
412 if (plot->add_xlabel)
413 plot->total_height += bump_height;
416 snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
417 "height=\"%d\" fill=\"white\" stroke=\"none\"/>",
418 plot->start_x_offset,
419 plot->start_y_offset, plot->total_width + 10,
420 plot->total_height + 20);
422 write_check(fd, line, len);
424 snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
425 "filter=\"url(#shadow)\" "
426 "height=\"%d\" fill=\"white\" stroke=\"none\"/>",
427 plot->start_x_offset + 15,
428 plot->start_y_offset, plot->total_width - 30,
431 write_check(fd, line, len);
432 plot->total_height += 20;
434 if (plot->total_height + plot->start_y_offset > final_height)
435 final_height = plot->total_height + plot->start_y_offset;
436 if (plot->start_x_offset + plot->total_width + 40 > final_width)
437 final_width = plot->start_x_offset + plot->total_width + 40;
439 /* create an svg object for all our coords to be relative against */
440 snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset);
441 write_check(fd, line, strlen(line));
445 /* draw a plot title. This should be done only once,
446 * and it bumps the plot width/height numbers by
449 * Call this before setting up the first axis
451 void set_plot_title(struct plot *plot, char *title)
456 plot->total_height = plot_title_height;
457 plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + legend_width;
460 snprintf(line, line_len, "<rect x=\"0\" y=\"%d\" width=\"%d\" height=\"%d\" fill=\"white\" stroke=\"none\"/>",
461 plot->start_y_offset, plot->total_width + 40, plot_title_height + 20);
463 write_check(fd, line, len);
465 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
466 "font-weight=\"bold\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
467 axis_x_off(graph_width / 2),
468 plot->start_y_offset + plot_title_height / 2,
469 font_family, plot_title_font_size, "middle", title);
470 plot->start_y_offset += plot_title_height;
472 write_check(fd, line, len);
475 #define TICK_MINI_STEPS 3
477 static double find_step(double first, double last, int num_ticks)
479 int mini_step[TICK_MINI_STEPS] = { 1, 2, 5 };
480 int cur_mini_step = 0;
481 double step = (last - first) / num_ticks;
482 double log10 = log(10);
484 /* Round to power of 10 */
485 step = exp(floor(log(step) / log10) * log10);
486 /* Scale down step to provide enough ticks */
487 while (cur_mini_step < TICK_MINI_STEPS
488 && (last - first) / (step * mini_step[cur_mini_step]) > num_ticks)
491 if (cur_mini_step > 0)
492 step *= mini_step[cur_mini_step - 1];
498 * create evenly spread out ticks along the xaxis. if tick only is set
499 * this just makes the ticks, otherwise it labels each tick as it goes
501 void set_xticks(struct plot *plot, int num_ticks, int first, int last)
506 int tick_y = axis_y_off(graph_tick_len) + graph_inner_y_margin;
507 int tick_x = axis_x();
508 int tick_only = plot->add_xlabel == 0;
510 int text_y = axis_y() + tick_label_pad;
512 char *middle = "middle";
513 char *start = "start";
515 step = find_step(first, last, num_ticks);
517 * We don't want last two ticks to be too close together so subtract
518 * 20% of the step from the interval
520 num_ticks = (double)(last - first - step) / step + 1;
521 pixels_per_tick = graph_width * step / (double)(last - first);
523 for (i = 0; i < num_ticks; i++) {
526 snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"2\" height=\"%d\" style=\"stroke:none;fill:black;\"/>\n",
527 tick_x, tick_y, graph_tick_len);
528 write_check(plot->fd, line, strlen(line));
536 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
537 "fill=\"black\" style=\"text-anchor: %s\">%d</text>\n",
538 tick_x, text_y, font_family, tick_font_size, anchor,
539 (int)(first + step * i));
541 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
542 "fill=\"black\" style=\"text-anchor: %s\">%.2f</text>\n",
543 tick_x, text_y, font_family, tick_font_size, anchor,
545 write_check(plot->fd, line, strlen(line));
547 tick_x += pixels_per_tick;
552 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
553 "fill=\"black\" style=\"text-anchor: middle\">%d</text>\n",
554 axis_x_off(graph_width - 2),
555 text_y, font_family, tick_font_size, last);
557 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
558 "fill=\"black\" style=\"text-anchor: middle\">%.2f</text>\n",
559 axis_x_off(graph_width - 2),
560 text_y, font_family, tick_font_size, (double)last);
561 write_check(plot->fd, line, strlen(line));
565 void set_ylabel(struct plot *plot, char *label)
570 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
571 "transform=\"rotate(-90 %d %d)\" font-weight=\"bold\" "
572 "font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
573 graph_left_pad / 2 - axis_label_font_size,
574 axis_y_off(graph_height / 2),
576 graph_left_pad / 2 - axis_label_font_size,
577 (int)axis_y_off(graph_height / 2),
578 axis_label_font_size, "middle", label);
580 write_check(fd, line, len);
583 void set_xlabel(struct plot *plot, char *label)
587 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
588 "font-weight=\"bold\" "
589 "font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
590 axis_x_off(graph_width / 2),
591 axis_y() + tick_font_size * 3 + axis_label_font_size / 2,
593 axis_label_font_size, "middle", label);
595 write_check(fd, line, len);
600 * create evenly spread out ticks along the y axis.
601 * The ticks are labeled as it goes
603 void set_yticks(struct plot *plot, int num_ticks, int first, int last, char *units)
605 int pixels_per_tick = graph_height / num_ticks;
606 int step = (last - first) / num_ticks;
609 int text_x = axis_x() - 6;
610 int tick_x = axis_x();
611 char *anchor = "end";
613 for (i = 0; i < num_ticks; i++) {
615 snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" "
616 "style=\"stroke:lightgray;stroke-width:2;stroke-dasharray:9,12;\"/>\n",
617 tick_x, axis_y_off(tick_y),
618 axis_x_off(graph_width), axis_y_off(tick_y));
619 write_check(plot->fd, line, strlen(line));
622 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
623 "fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n",
625 axis_y_off(tick_y - tick_font_size / 2),
626 font_family, tick_font_size, anchor, first + step * i, units);
627 write_check(plot->fd, line, strlen(line));
628 tick_y += pixels_per_tick;
630 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
631 "fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n",
632 text_x, axis_y_off(graph_height), font_family, tick_font_size, anchor, last, units);
633 write_check(plot->fd, line, strlen(line));
636 void set_plot_label(struct plot *plot, char *label)
641 snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
642 "font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
643 axis_x() + graph_width / 2,
644 plot_label_height / 2,
645 font_family, plot_label_font_size, "middle", label);
647 write_check(fd, line, len);
650 static void close_svg(int fd)
652 char *close_line = "</svg>\n";
654 write_check(fd, close_line, strlen(close_line));
657 int close_plot(struct plot *plot)
660 if (plot->direction == PLOT_DOWN)
661 plot->start_y_offset += plot->total_height;
662 else if (plot->direction == PLOT_ACROSS)
663 plot->start_x_offset += plot->total_width;
667 struct plot *alloc_plot(void)
670 plot = calloc(1, sizeof(*plot));
672 fprintf(stderr, "Unable to allocate memory %s\n", strerror(errno));
679 int close_plot_file(struct plot *plot)
682 ret = lseek(plot->fd, 0, SEEK_SET);
683 if (ret == (off_t)-1) {
687 final_width = ((final_width + 1) / 2) * 2;
688 final_height = ((final_height + 1) / 2) * 2;
689 snprintf(line, line_len, "<svg xmlns=\"http://www.w3.org/2000/svg\" "
690 "width=\"%d\" height=\"%d\">\n",
691 final_width, final_height);
692 write_check(plot->fd, line, strlen(line));
693 snprintf(line, line_len, "<rect x=\"0\" y=\"0\" width=\"%d\" "
694 "height=\"%d\" fill=\"white\"/>\n", final_width, final_height);
695 write_check(plot->fd, line, strlen(line));
701 void set_plot_output(struct plot *plot, char *filename)
706 close_plot_file(plot);
707 fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600);
709 fprintf(stderr, "Unable to open output file %s err %s\n", filename, strerror(errno));
713 plot->start_y_offset = plot->start_x_offset = 0;
714 write_svg_header(fd);
717 char *byte_unit_names[] = { "", "K", "M", "G", "T", "P", "E", "Z", "Y", "unobtainium" };
718 int MAX_BYTE_UNIT_SCALE = 9;
720 char *time_unit_names[] = { "n", "u", "m", "s" };
721 int MAX_TIME_UNIT_SCALE = 3;
723 void scale_line_graph_bytes(u64 *max, char **units, u64 factor)
728 while (val > factor * 64) {
733 *units = byte_unit_names[scale];
737 if (scale > MAX_BYTE_UNIT_SCALE)
738 scale = MAX_BYTE_UNIT_SCALE;
743 void scale_line_graph_time(u64 *max, char **units)
748 while (val > 1000 * 10) {
752 if (scale == MAX_TIME_UNIT_SCALE)
755 *units = time_unit_names[scale];
762 static int rolling_span(struct graph_line_data *gld)
764 if (rolling_avg_secs)
765 return rolling_avg_secs;
766 return (gld->stop_seconds - gld->min_seconds) / 25;
770 double line_graph_roll_avg_max(struct graph_line_data *gld)
776 rolling = rolling_span(gld);
777 for (i = gld->min_seconds; i < gld->stop_seconds; i++) {
778 avg = rolling_avg(gld->data, i, rolling);
785 int svg_line_graph(struct plot *plot, struct graph_line_data *gld, char *color, int thresh1, int thresh2)
792 char *start = "<path d=\"";
793 double yscale = ((double)gld->max) / graph_height;
794 double xscale = (double)(gld->max_seconds - gld->min_seconds - 1) / graph_width;
797 int printed_header = 0;
798 int printed_lines = 0;
800 if (thresh1 && thresh2)
803 rolling = rolling_span(gld);
805 for (i = gld->min_seconds; i < gld->stop_seconds; i++) {
806 avg = rolling_avg(gld->data, i, rolling);
812 if (val > graph_height)
817 x = (double)(i - gld->min_seconds) / xscale;
818 if (!thresh1 && !thresh2) {
819 if (!printed_header) {
820 write_check(fd, start, strlen(start));
824 /* in full line mode, everything in the graph is connected */
825 snprintf(line, line_len, "%c %d %d ", c, axis_x_off(x), axis_y_off(val));
827 write_check(fd, line, strlen(line));
829 } else if (avg > thresh1 || avg > thresh2) {
831 if (!printed_header) {
832 write_check(fd, start, strlen(start));
836 /* otherwise, we just print a bar up there to show this one data point */
837 if (i >= gld->stop_seconds - 2)
841 * we don't use the rolling averages here to show high
844 snprintf(line, line_len, "M %d %d h %d ", axis_x_off(x),
845 axis_y_off(val), len);
846 write_check(fd, line, strlen(line));
852 snprintf(line, line_len, "\" fill=\"none\" stroke=\"%s\" stroke-width=\"2\"/>\n", color);
853 write_check(fd, line, strlen(line));
856 svg_write_time_line(plot, plot->timeline);
861 void svg_write_time_line(struct plot *plot, int col)
863 snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" "
864 "style=\"stroke:black;stroke-width:2;\"/>\n",
865 axis_x_off(col), axis_y_off(0),
866 axis_x_off(col), axis_y_off(graph_height));
867 write_check(plot->fd, line, strlen(line));
870 static void svg_add_io(int fd, double row, double col, double width, double height, char *color)
874 snprintf(line, line_len, "<rect x=\"%.2f\" y=\"%.2f\" width=\"%.1f\" height=\"%.1f\" "
875 "rx=\"%.2f\" style=\"stroke:none;fill:%s;stroke-width:0\"/>\n",
876 axis_x_off_double(col), axis_y_off_double(row), width, height, rx, color);
877 write_check(fd, line, strlen(line));
880 int svg_io_graph_movie_array(struct plot *plot, struct pid_plot_history *pph)
887 for (i = 0; i < pph->num_used; i++) {
888 cell_index = pph->history[i];
889 movie_row = floor(cell_index / graph_width);
890 movie_col = cell_index - movie_row * graph_width;
891 svg_add_io(plot->fd, movie_row, movie_col, 4, 4, pph->color);
896 static float spindle_steps = 0;
898 void rewind_spindle_steps(int num)
900 spindle_steps -= num * 0.01;
903 int svg_io_graph_movie_array_spindle(struct plot *plot, struct pid_plot_history *pph)
908 double cells_per_circle;
910 double degrees_per_cell;
914 double graph_width_extra = graph_width + graph_circle_extra;
915 double graph_height_extra = graph_height + graph_circle_extra;
918 if (graph_width_extra > graph_height_extra)
919 graph_width_extra = graph_height_extra;
921 if (graph_width_extra < graph_height_extra)
922 graph_height_extra = graph_width_extra;
924 radius = graph_width_extra;
926 center_x = axis_x_off_double(graph_width_extra / 2);
927 center_y = axis_y_off_double(graph_height_extra / 2);
929 snprintf(line, line_len, "<g transform=\"rotate(%.4f, %.2f, %.2f)\"> "
930 "<circle cx=\"%.2f\" cy=\"%.2f\" "
931 "stroke=\"black\" stroke-width=\"6\" "
932 "r=\"%.2f\" fill=\"none\"/>\n",
933 spindle_steps * 1.2, center_x, center_y, center_x, center_y, graph_width_extra / 2);
934 write_check(plot->fd, line, strlen(line));
935 snprintf(line, line_len, "<circle cx=\"%.2f\" cy=\"%.2f\" "
936 "stroke=\"none\" fill=\"red\" r=\"%.2f\"/>\n</g>\n",
937 axis_x_off_double(graph_width_extra), center_y, 4.5);
938 write_check(plot->fd, line, strlen(line));
939 spindle_steps += 0.01;
941 radius = floor(radius / 2);
942 num_circles = radius / 4 - 3;
943 cells_per_circle = pph->history_max / num_circles;
944 degrees_per_cell = 360 / cells_per_circle;
946 for (i = 0; i < pph->num_used; i++) {
947 cell_index = pph->history[i];
948 circle_num = floor(cell_index / cells_per_circle);
949 rot = cell_index - circle_num * cells_per_circle;
950 circle_num = num_circles - circle_num;
951 radius = circle_num * 4;
953 rot = rot * degrees_per_cell;
954 rot -= spindle_steps;
955 snprintf(line, line_len, "<path transform=\"rotate(%.4f, %.2f, %.2f)\" "
956 "d=\"M %.2f %.2f a %.2f %.2f 0 0 1 0 5\" "
957 "stroke=\"%s\" stroke-width=\"4\"/>\n",
958 -rot, center_x, center_y,
959 axis_x_off_double(graph_width_extra / 2 + radius) + 8, center_y,
960 radius, radius, pph->color);
962 write_check(plot->fd, line, strlen(line));
967 static int add_plot_history(struct pid_plot_history *pph, double val)
969 if (pph->num_used == pph->history_len) {
970 pph->history_len += 4096;
971 pph->history = realloc(pph->history,
972 pph->history_len * sizeof(double));
974 perror("Unable to allocate memory");
978 pph->history[pph->num_used++] = val;
982 int svg_io_graph_movie(struct graph_dot_data *gdd, struct pid_plot_history *pph, int col)
989 double blocks_per_row = (gdd->max_offset - gdd->min_offset + 1) / gdd->rows;
990 double movie_blocks_per_cell = (gdd->max_offset - gdd->min_offset + 1) / (graph_width * graph_height);
992 int margin_orig = graph_inner_y_margin;
994 graph_inner_y_margin += 5;
995 pph->history_max = (gdd->max_offset - gdd->min_offset + 1) / movie_blocks_per_cell;
997 for (row = gdd->rows - 1; row >= 0; row--) {
998 bit_index = row * gdd->cols + col;
999 arr_index = bit_index / 8;
1000 bit_mod = bit_index % 8;
1004 val = gdd->data[arr_index];
1005 if (val & (1 << bit_mod)) {
1006 /* in bytes, linear offset from the start of the drive */
1007 cell_index = (double)row * blocks_per_row;
1009 /* a cell number in the graph */
1010 cell_index /= movie_blocks_per_cell;
1012 add_plot_history(pph, cell_index);
1015 graph_inner_y_margin = margin_orig;
1019 int svg_io_graph(struct plot *plot, struct graph_dot_data *gdd)
1029 for (row = gdd->rows - 1; row >= 0; row--) {
1030 for (col = 0; col < gdd->cols; col++) {
1031 bit_index = row * gdd->cols + col;
1032 arr_index = bit_index / 8;
1033 bit_mod = bit_index % 8;
1037 val = gdd->data[arr_index];
1038 if (val & (1 << bit_mod))
1039 svg_add_io(fd, floor(row / io_graph_scale), col, 1.5, 1.5, gdd->color);
1045 void svg_alloc_legend(struct plot *plot, int num_lines)
1047 char **lines = calloc(num_lines, sizeof(char *));
1048 plot->legend_index = 0;
1049 plot->legend_lines = lines;
1050 plot->num_legend_lines = num_lines;
1053 void svg_free_legend(struct plot *plot)
1056 for (i = 0; i < plot->legend_index; i++)
1057 free(plot->legend_lines[i]);
1058 free(plot->legend_lines);
1059 plot->legend_lines = NULL;
1060 plot->legend_index = 0;
1063 void svg_write_legend(struct plot *plot)
1065 int legend_line_x = axis_x_off(graph_width) + legend_x_off;
1066 int legend_line_y = axis_y_off(graph_height) + legend_y_off;
1069 if (plot->legend_index == 0)
1072 snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "
1073 "fill=\"white\" filter=\"url(#shadow)\"/>\n",
1077 plot->legend_index * legend_font_size + legend_font_size / 2 + 12);
1079 write_check(plot->fd, line, strlen(line));
1080 for (i = 0; i < plot->legend_index; i++) {
1081 write_check(plot->fd, plot->legend_lines[i],
1082 strlen(plot->legend_lines[i]));
1083 free(plot->legend_lines[i]);
1085 free(plot->legend_lines);
1086 plot->legend_lines = NULL;
1087 plot->legend_index = 0;
1090 void svg_add_legend(struct plot *plot, char *text, char *extra, char *color)
1092 int legend_line_x = axis_x_off(graph_width) + legend_x_off;
1093 int legend_line_y = axis_y_off(graph_height) + legend_y_off;
1095 if (!text && (!extra || strlen(extra) == 0))
1098 legend_line_y += plot->legend_index * legend_font_size + legend_font_size / 2;
1099 snprintf(line, line_len, "<path d=\"M %d %d h 8\" stroke=\"%s\" stroke-width=\"8\" "
1100 "filter=\"url(#labelshadow)\"/> "
1101 "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
1102 "fill=\"black\" style=\"text-anchor: left\">%s%s</text>\n",
1103 legend_line_x, legend_line_y,
1104 color, legend_line_x + 13,
1105 legend_line_y + 4, font_family, legend_font_size,
1108 plot->legend_lines[plot->legend_index++] = strdup(line);
1111 void set_legend_width(int longest_str)
1114 legend_width = longest_str * (legend_font_size * 3 / 4) + 25;
1119 void set_rolling_avg(int rolling)
1121 rolling_avg_secs = rolling;
1124 void set_io_graph_scale(int scale)
1126 io_graph_scale = scale;
1129 void set_graph_size(int width, int height)
1131 graph_width = width;
1132 graph_height = height;
1135 void get_graph_size(int *width, int *height)
1137 *width = graph_width;
1138 *height = graph_height;
1141 void set_graph_height(int h)
1145 void set_graph_width(int w)