From 611a546bec3e1af2a87af0862398fc711dc47aef Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Sun, 20 Sep 2009 18:14:38 +0200 Subject: [PATCH] perf util: SVG performance improvements Tweak the output SVG to increase performance in SVG viewers by limiting the different types of font sizes and by smarter transformations on the text. At least with Inkscape this gives a notable performance improvement during zoom and scrolling. Signed-off-by: Arjan van de Ven Cc: Peter Zijlstra Cc: Paul Mackerras Cc: Frederic Weisbecker LKML-Reference: <20090920181438.3a49cb93@linux.intel.com> Signed-off-by: Ingo Molnar --- tools/perf/util/svghelper.c | 78 ++++++++++++++++++++++++++++++++------------- 1 file changed, 55 insertions(+), 23 deletions(-) diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c index be1555e..a778fd0 100644 --- a/tools/perf/util/svghelper.c +++ b/tools/perf/util/svghelper.c @@ -51,6 +51,25 @@ static double time2pixels(u64 time) return X; } +/* + * Round text sizes so that the svg viewer only needs a discrete + * number of renderings of the font + */ +static double round_text_size(double size) +{ + int loop = 100; + double target = 10.0; + + if (size >= 10.0) + return size; + while (loop--) { + if (size >= target) + return target; + target = target / 2.0; + } + return size; +} + void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end) { int new_width; @@ -122,8 +141,10 @@ void svg_sample(int Yslot, int cpu, u64 start, u64 end) text_size = text_size/2; if (text_size > 1.25) text_size = 1.25; + text_size = round_text_size(text_size); + if (text_size > MIN_TEXT_SIZE) - fprintf(svgfile, "%i\n", + fprintf(svgfile, "%i\n", time2pixels(start), Yslot * SLOT_MULT + SLOT_HEIGHT - 1, text_size, cpu + 1); } @@ -162,17 +183,20 @@ void svg_waiting(int Yslot, u64 start, u64 end) text = time_to_string(end-start); - font_size = 1.0 * (time2pixels(end)-time2pixels(start)) / strlen(text); + font_size = 1.0 * (time2pixels(end)-time2pixels(start)); - if (font_size > 0.2) - font_size = 0.2; + if (font_size > 3) + font_size = 3; + font_size = round_text_size(font_size); - fprintf(svgfile, "\n", - time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT, style); + fprintf(svgfile, "\n", time2pixels(start), Yslot * SLOT_MULT); + fprintf(svgfile, "\n", + time2pixels(end)-time2pixels(start), SLOT_HEIGHT, style); if (font_size > MIN_TEXT_SIZE) - fprintf(svgfile, "%s\n", - time2pixels(start), Yslot * SLOT_MULT + 2, font_size, text); + fprintf(svgfile, " %s\n", + font_size, text); + fprintf(svgfile, "\n"); } static char *cpu_model(void) @@ -211,7 +235,7 @@ void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq) cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT); sprintf(cpu_string, "CPU %i", (int)cpu+1); - fprintf(svgfile, "%s\n", + fprintf(svgfile, "%s\n", 10+time2pixels(first_time), cpu2y(cpu) + SLOT_HEIGHT/2, cpu_string); fprintf(svgfile, "%s\n", @@ -225,15 +249,21 @@ void svg_process(int cpu, u64 start, u64 end, const char *type, const char *name if (!svgfile) return; - fprintf(svgfile, "\n", - time2pixels(start), time2pixels(end)-time2pixels(start), cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT, type); + + fprintf(svgfile, "\n", time2pixels(start), cpu2y(cpu)); + fprintf(svgfile, "\n", + time2pixels(end)-time2pixels(start), SLOT_MULT+SLOT_HEIGHT, type); width = time2pixels(end)-time2pixels(start); if (width > 6) width = 6; + width = round_text_size(width); + if (width > MIN_TEXT_SIZE) - fprintf(svgfile, "%s\n", - time2pixels(start), cpu2y(cpu), width, name); + fprintf(svgfile, "%s\n", + width, name); + + fprintf(svgfile, "\n"); } void svg_cstate(int cpu, u64 start, u64 end, int type) @@ -254,13 +284,15 @@ void svg_cstate(int cpu, u64 start, u64 end, int type) time2pixels(start), time2pixels(end)-time2pixels(start), cpu2y(cpu), SLOT_MULT+SLOT_HEIGHT); - width = time2pixels(end)-time2pixels(start); + width = (time2pixels(end)-time2pixels(start))/2.0; if (width > 6) width = 6; + width = round_text_size(width); + if (width > MIN_TEXT_SIZE) - fprintf(svgfile, "C%i\n", - time2pixels(start), cpu2y(cpu), width, type); + fprintf(svgfile, "C%i\n", + time2pixels(start), cpu2y(cpu)+width, width, type); } static char *HzToHuman(unsigned long hz) @@ -299,7 +331,7 @@ void svg_pstate(int cpu, u64 start, u64 end, u64 freq) height = 1 + cpu2y(cpu) + SLOT_MULT + SLOT_HEIGHT - height; fprintf(svgfile, "\n", time2pixels(start), time2pixels(end), height, height); - fprintf(svgfile, "%s\n", + fprintf(svgfile, "%s\n", time2pixels(start), height+0.9, HzToHuman(freq)); } @@ -318,14 +350,14 @@ void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc fprintf(svgfile, "\n", time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32); if (desc2) - fprintf(svgfile, "%s >\n", + fprintf(svgfile, "%s >\n", time2pixels(start), row1 * SLOT_MULT + SLOT_HEIGHT + SLOT_HEIGHT/48, desc2); } if (row2) { fprintf(svgfile, "\n", time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32, time2pixels(start), row2 * SLOT_MULT); if (desc1) - fprintf(svgfile, "%s >\n", + fprintf(svgfile, "%s >\n", time2pixels(start), row2 * SLOT_MULT - SLOT_MULT/32, desc1); } } else { @@ -333,14 +365,14 @@ void svg_partial_wakeline(u64 start, int row1, char *desc1, int row2, char *desc fprintf(svgfile, "\n", time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT, time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/32); if (desc1) - fprintf(svgfile, "%s <\n", + fprintf(svgfile, "%s <\n", time2pixels(start), row2 * SLOT_MULT + SLOT_HEIGHT + SLOT_MULT/48, desc1); } if (row1) { fprintf(svgfile, "\n", time2pixels(start), row1 * SLOT_MULT - SLOT_MULT/32, time2pixels(start), row1 * SLOT_MULT); if (desc2) - fprintf(svgfile, "%s <\n", + fprintf(svgfile, "%s <\n", time2pixels(start), row1 * SLOT_MULT - SLOT_HEIGHT/32, desc2); } } @@ -390,7 +422,7 @@ void svg_text(int Yslot, u64 start, const char *text) if (!svgfile) return; - fprintf(svgfile, "%s\n", + fprintf(svgfile, "%s\n", time2pixels(start), Yslot * SLOT_MULT+SLOT_HEIGHT/2, text); } @@ -401,7 +433,7 @@ static void svg_legenda_box(int X, const char *text, const char *style) fprintf(svgfile, "\n", X, boxsize, boxsize, style); - fprintf(svgfile, "%s\n", + fprintf(svgfile, "%s\n", X + boxsize + 5, boxsize, 0.8 * boxsize, text); } -- 1.8.2.3