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linux/tools/perf/util/svghelper.c
Arjan van de Ven a92fe7b306 perf timechart: Show the duration of scheduler delays in the SVG 
Given that scheduler latencies are the hot thing nowadays, show the
duration of said latencies in the SVG in text form.

In addition, if the latency is more than 10 msec, pick a brighter
yellow color as a way to point these long delays out.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090920181353.796f4509@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 19:37:35 +02:00

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/*
* svghelper.c - helper functions for outputting svg
*
* (C) Copyright 2009 Intel Corporation
*
* Authors:
* Arjan van de Ven <arjan@linux.intel.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; version 2
* of the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "svghelper.h"
static u64 first_time, last_time;
static u64 turbo_frequency, max_freq;
#define SLOT_MULT 30.0
#define SLOT_HEIGHT 25.0
#define WIDTH 1000.0
#define MIN_TEXT_SIZE 0.001
static u64 total_height;
static FILE *svgfile;
static double cpu2slot(int cpu)
{
return 2 * cpu + 1;
}
static double cpu2y(int cpu)
{
return cpu2slot(cpu) * SLOT_MULT;
}
static double time2pixels(u64 time)
{
double X;
X = WIDTH * (time - first_time) / (last_time - first_time);
return X;
}
void open_svg(const char *filename, int cpus, int rows)
{
svgfile = fopen(filename, "w");
if (!svgfile) {
fprintf(stderr, "Cannot open %s for output\n", filename);
return;
}
total_height = (1 + rows + cpu2slot(cpus)) * SLOT_MULT;
fprintf(svgfile, "<?xml version=\"1.0\" standalone=\"no\"?> \n");
fprintf(svgfile, "<svg width=\"%4.1f\" height=\"%llu\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">\n", WIDTH, total_height);
fprintf(svgfile, "<defs>\n <style type=\"text/css\">\n <![CDATA[\n");
fprintf(svgfile, " rect { stroke-width: 1; }\n");
fprintf(svgfile, " rect.process { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:1; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.process2 { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.sample { fill:rgb( 0, 0,255); fill-opacity:0.8; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.blocked { fill:rgb(255, 0, 0); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.waiting { fill:rgb(214,214, 0); fill-opacity:0.3; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.WAITING { fill:rgb(255,214, 48); fill-opacity:0.6; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.cpu { fill:rgb(192,192,192); fill-opacity:0.2; stroke-width:0.5; stroke:rgb(128,128,128); } \n");
fprintf(svgfile, " rect.pstate { fill:rgb(128,128,128); fill-opacity:0.8; stroke-width:0; } \n");
fprintf(svgfile, " rect.c1 { fill:rgb(255,214,214); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c2 { fill:rgb(255,172,172); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c3 { fill:rgb(255,130,130); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c4 { fill:rgb(255, 88, 88); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c5 { fill:rgb(255, 44, 44); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " rect.c6 { fill:rgb(255, 0, 0); fill-opacity:0.5; stroke-width:0; } \n");
fprintf(svgfile, " line.pstate { stroke:rgb(255,255, 0); stroke-opacity:0.8; stroke-width:2; } \n");
fprintf(svgfile, " ]]>\n </style>\n</defs>\n");
}
void svg_box(int Yslot, u64 start, u64 end, const char *type)
{
if (!svgfile)
return;
fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT, type);
}
void svg_sample(int Yslot, int cpu, u64 start, u64 end)
{
double text_size;
if (!svgfile)
return;
fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"sample\"/>\n",
time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT);
text_size = (time2pixels(end)-time2pixels(start));
if (cpu > 9)
text_size = text_size/2;
if (text_size > 1.25)
text_size = 1.25;
if (text_size > MIN_TEXT_SIZE)
fprintf(svgfile, "<text transform=\"translate(%1.8f,%1.8f)\" font-size=\"%1.6fpt\">%i</text>\n",
time2pixels(start), Yslot * SLOT_MULT + SLOT_HEIGHT - 1, text_size, cpu + 1);
}
static char *time_to_string(u64 duration)
{
static char text[80];
text[0] = 0;
if (duration < 1000) /* less than 1 usec */
return text;
if (duration < 1000 * 1000) { /* less than 1 msec */
sprintf(text, "%4.1f us", duration / 1000.0);
return text;
}
sprintf(text, "%4.1f ms", duration / 1000.0 / 1000);
return text;
}
void svg_waiting(int Yslot, u64 start, u64 end)
{
char *text;
const char *style;
double font_size;
if (!svgfile)
return;
style = "waiting";
if (end-start > 10 * 1000000) /* 10 msec */
style = "WAITING";
text = time_to_string(end-start);
font_size = 1.0 * (time2pixels(end)-time2pixels(start)) / strlen(text);
if (font_size > 0.2)
font_size = 0.2;
fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT, style);
if (font_size > MIN_TEXT_SIZE)
fprintf(svgfile, "<text transform=\"translate(%1.8f,%1.8f)\" font-size=\"%1.6fpt\">%s</text>\n",
time2pixels(start), Yslot * SLOT_MULT + 2, font_size, text);
}
static char *cpu_model(void)
{
static char cpu_m[255];
char buf[256];
FILE *file;
cpu_m[0] = 0;
/* CPU type */
file = fopen("/proc/cpuinfo", "r");
if (file) {
while (fgets(buf, 255, file)) {
if (strstr(buf, "model name")) {
strncpy(cpu_m, &buf[13], 255);
break;
}
}
fclose(file);
}
return cpu_m;
}
void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq)
{
char cpu_string[80];
if (!svgfile)
return;
max_freq = __max_freq;
turbo_frequency = __turbo_freq;
fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"cpu\"/>\n",
time2pixels(first_time),
time2pixels(last_time)-time2pixels(first_time),
cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
sprintf(cpu_string, "CPU %i", (int)cpu+1);
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\">%s</text>\n",
10+time2pixels(first_time), cpu2y(cpu) + SLOT_HEIGHT/2, cpu_string);
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\" font-size=\"1.25pt\">%s</text>\n",
10+time2pixels(first_time), cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - 4, cpu_model());
}
void svg_process(int cpu, u64 start, u64 end, const char *type, const char *name)
{
double width;
if (!svgfile)
return;
fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
time2pixels(start), time2pixels(end)-time2pixels(start), cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT, type);
width = time2pixels(end)-time2pixels(start);
if (width > 6)
width = 6;
if (width > MIN_TEXT_SIZE)
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"%3.4fpt\">%s</text>\n",
time2pixels(start), cpu2y(cpu), width, name);
}
void svg_cstate(int cpu, u64 start, u64 end, int type)
{
double width;
char style[128];
if (!svgfile)
return;
if (type > 6)
type = 6;
sprintf(style, "c%i", type);
fprintf(svgfile, "<rect class=\"%s\" x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\"/>\n",
style,
time2pixels(start), time2pixels(end)-time2pixels(start),
cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT);
width = time2pixels(end)-time2pixels(start);
if (width > 6)
width = 6;
if (width > MIN_TEXT_SIZE)
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"%3.4fpt\">C%i</text>\n",
time2pixels(start), cpu2y(cpu), width, type);
}
static char *HzToHuman(unsigned long hz)
{
static char buffer[1024];
unsigned long long Hz;
memset(buffer, 0, 1024);
Hz = hz;
/* default: just put the Number in */
sprintf(buffer, "%9lli", Hz);
if (Hz > 1000)
sprintf(buffer, " %6lli Mhz", (Hz+500)/1000);
if (Hz > 1500000)
sprintf(buffer, " %6.2f Ghz", (Hz+5000.0)/1000000);
if (Hz == turbo_frequency)
sprintf(buffer, "Turbo");
return buffer;
}
void svg_pstate(int cpu, u64 start, u64 end, u64 freq)
{
double height = 0;
if (!svgfile)
return;
if (max_freq)
height = freq * 1.0 / max_freq * (SLOT_HEIGHT + SLOT_MULT);
height = 1 + cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - height;
fprintf(svgfile, "<line x1=\"%4.8f\" x2=\"%4.8f\" y1=\"%4.1f\" y2=\"%4.1f\" class=\"pstate\"/>\n",
time2pixels(start), time2pixels(end), height, height);
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\" font-size=\"0.25pt\">%s</text>\n",
time2pixels(start), height+0.9, HzToHuman(freq));
}
void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc2)
{
double height;
if (!svgfile)
return;
if (row1 < row2) {
if (row1) {
fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
if (desc2)
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"0.02pt\">%s &gt;</text>\n",
time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_HEIGHT/48, desc2);
}
if (row2) {
fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32, time2pixels(start), row2 * SLOT_MULT);
if (desc1)
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"0.02pt\">%s &gt;</text>\n",
time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32, desc1);
}
} else {
if (row2) {
fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32);
if (desc1)
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"0.02pt\">%s &lt;</text>\n",
time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/48, desc1);
}
if (row1) {
fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row1 * SLOT_MULT - SLOT_MULT/32, time2pixels(start), row1 * SLOT_MULT);
if (desc2)
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f) rotate(90)\" font-size=\"0.02pt\">%s &lt;</text>\n",
time2pixels(start), row1 * SLOT_MULT - SLOT_HEIGHT/32, desc2);
}
}
height = row1 * SLOT_MULT;
if (row2 > row1)
height += SLOT_HEIGHT;
if (row1)
fprintf(svgfile, "<circle cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\" style=\"fill:rgb(32,255,32)\"/>\n",
time2pixels(start), height);
}
void svg_wakeline(u64 start, int row1, int row2)
{
double height;
if (!svgfile)
return;
if (row1 < row2)
fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row2 * SLOT_MULT);
else
fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%4.2f\" style=\"stroke:rgb(32,255,32);stroke-width:0.009\"/>\n",
time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row1 * SLOT_MULT);
height = row1 * SLOT_MULT;
if (row2 > row1)
height += SLOT_HEIGHT;
fprintf(svgfile, "<circle cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\" style=\"fill:rgb(32,255,32)\"/>\n",
time2pixels(start), height);
}
void svg_interrupt(u64 start, int row)
{
if (!svgfile)
return;
fprintf(svgfile, "<circle cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\" style=\"fill:rgb(255,128,128)\"/>\n",
time2pixels(start), row * SLOT_MULT);
fprintf(svgfile, "<circle cx=\"%4.8f\" cy=\"%4.2f\" r = \"0.01\" style=\"fill:rgb(255,128,128)\"/>\n",
time2pixels(start), row * SLOT_MULT + SLOT_HEIGHT);
}
void svg_text(int Yslot, u64 start, const char *text)
{
if (!svgfile)
return;
fprintf(svgfile, "<text transform=\"translate(%4.8f,%4.8f)\">%s</text>\n",
time2pixels(start), Yslot * SLOT_MULT+SLOT_HEIGHT/2, text);
}
static void svg_legenda_box(int X, const char *text, const char *style)
{
double boxsize;
boxsize = SLOT_HEIGHT / 2;
fprintf(svgfile, "<rect x=\"%i\" width=\"%4.8f\" y=\"0\" height=\"%4.1f\" class=\"%s\"/>\n",
X, boxsize, boxsize, style);
fprintf(svgfile, "<text transform=\"translate(%4.8f, %4.8f)\" font-size=\"%4.4fpt\">%s</text>\n",
X + boxsize + 5, boxsize, 0.8 * boxsize, text);
}
void svg_legenda(void)
{
if (!svgfile)
return;
svg_legenda_box(0, "Running", "sample");
svg_legenda_box(100, "Idle","rect.c1");
svg_legenda_box(200, "Deeper Idle", "rect.c3");
svg_legenda_box(350, "Deepest Idle", "rect.c6");
svg_legenda_box(550, "Sleeping", "process2");
svg_legenda_box(650, "Waiting for cpu", "waiting");
svg_legenda_box(800, "Blocked on IO", "blocked");
}
void svg_time_grid(u64 start, u64 end)
{
u64 i;
first_time = start;
last_time = end;
first_time = first_time / 100000000 * 100000000;
if (!svgfile)
return;
i = first_time;
while (i < last_time) {
int color = 220;
double thickness = 0.075;
if ((i % 100000000) == 0) {
thickness = 0.5;
color = 192;
}
if ((i % 1000000000) == 0) {
thickness = 2.0;
color = 128;
}
fprintf(svgfile, "<line x1=\"%4.8f\" y1=\"%4.2f\" x2=\"%4.8f\" y2=\"%llu\" style=\"stroke:rgb(%i,%i,%i);stroke-width:%1.3f\"/>\n",
time2pixels(i), SLOT_MULT/2, time2pixels(i), total_height, color, color, color, thickness);
i += 10000000;
}
}
void svg_close(void)
{
if (svgfile) {
fprintf(svgfile, "</svg>\n");
fclose(svgfile);
svgfile = NULL;
}
}
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