torch.svg

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" width="1200" height="486" onload="init(evt)" viewBox="0 0 1200 486" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- Flame graph stack visualization. See https://github.com/brendangregg/FlameGraph for latest version, and http://www.brendangregg.com/flamegraphs.html for examples. -->
<!-- NOTES:  -->
<defs>
	<linearGradient id="background" y1="0" y2="1" x1="0" x2="0" >
		<stop stop-color="#eeeeee" offset="5%" />
		<stop stop-color="#eeeeb0" offset="95%" />
	</linearGradient>
</defs>
<style type="text/css">
	text { font-family:Verdana; font-size:12px; fill:rgb(0,0,0); }
	#search, #ignorecase { opacity:0.1; cursor:pointer; }
	#search:hover, #search.show, #ignorecase:hover, #ignorecase.show { opacity:1; }
	#subtitle { text-anchor:middle; font-color:rgb(160,160,160); }
	#title { text-anchor:middle; font-size:17px}
	#unzoom { cursor:pointer; }
	#frames > *:hover { stroke:black; stroke-width:0.5; cursor:pointer; }
	.hide { display:none; }
	.parent { opacity:0.5; }
</style>
<script type="text/ecmascript">
<![CDATA[
	"use strict";
	var details, searchbtn, unzoombtn, matchedtxt, svg, searching, currentSearchTerm, ignorecase, ignorecaseBtn;
	function init(evt) {
		details = document.getElementById("details").firstChild;
		searchbtn = document.getElementById("search");
		ignorecaseBtn = document.getElementById("ignorecase");
		unzoombtn = document.getElementById("unzoom");
		matchedtxt = document.getElementById("matched");
		svg = document.getElementsByTagName("svg")[0];
		searching = 0;
		currentSearchTerm = null;
	}

	window.addEventListener("click", function(e) {
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		else if (e.target.id == "search") search_prompt();
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	// mouse-over for info
	// show
	window.addEventListener("mouseover", function(e) {
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		if (target) details.nodeValue = "Function: " + g_to_text(target);
	}, false)

	// clear
	window.addEventListener("mouseout", function(e) {
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	// ctrl-F for search
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	// ctrl-I to toggle case-sensitive search
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		return;
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		if (!parent) return;
		if (parent.id == "frames") return node;
		return find_group(parent);
	}
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		if (e.attributes[attr] == undefined) return;
		if (val == undefined) val = e.attributes[attr].value;
		e.setAttribute("_orig_" + attr, val);
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	function orig_load(e, attr) {
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		e.attributes[attr].value = e.attributes["_orig_" + attr].value;
		e.removeAttribute("_orig_"+attr);
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	function g_to_text(e) {
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		return (text)
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	function g_to_func(e) {
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		// if there's any manipulation we want to do to the function
		// name before it's searched, do it here before returning.
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		var t = find_child(e, "text");
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		var txt = find_child(e, "title").textContent.replace(/\([^(]*\)$/,"");
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		if (w < 2 * 12 * 0.59) {
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			return;
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			orig_load(e, "width");
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				orig_save(e, "x");
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				if (e.tagName == "text")
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			if (e.attributes.width != undefined) {
				orig_save(e, "width");
				e.attributes.width.value = parseFloat(e.attributes.width.value) * ratio;
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		if (e.childNodes == undefined) return;
		for (var i = 0, c = e.childNodes; i < c.length; i++) {
			zoom_child(c[i], x - 10, ratio);
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	function zoom_parent(e) {
		if (e.attributes) {
			if (e.attributes.x != undefined) {
				orig_save(e, "x");
				e.attributes.x.value = 10;
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			if (e.attributes.width != undefined) {
				orig_save(e, "width");
				e.attributes.width.value = parseInt(svg.width.baseVal.value) - (10 * 2);
			}
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		if (e.childNodes == undefined) return;
		for (var i = 0, c = e.childNodes; i < c.length; i++) {
			zoom_parent(c[i]);
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	function zoom(node) {
		var attr = find_child(node, "rect").attributes;
		var width = parseFloat(attr.width.value);
		var xmin = parseFloat(attr.x.value);
		var xmax = parseFloat(xmin + width);
		var ymin = parseFloat(attr.y.value);
		var ratio = (svg.width.baseVal.value - 2 * 10) / width;

		// XXX: Workaround for JavaScript float issues (fix me)
		var fudge = 0.0001;

		unzoombtn.classList.remove("hide");

		var el = document.getElementById("frames").children;
		for (var i = 0; i < el.length; i++) {
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			var a = find_child(e, "rect").attributes;
			var ex = parseFloat(a.x.value);
			var ew = parseFloat(a.width.value);
			var upstack;
			// Is it an ancestor
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			} else {
				upstack = parseFloat(a.y.value) < ymin;
			}
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					e.classList.add("parent");
					zoom_parent(e);
					update_text(e);
				}
				// not in current path
				else
					e.classList.add("hide");
			}
			// Children maybe
			else {
				// no common path
				if (ex < xmin || ex + fudge >= xmax) {
					e.classList.add("hide");
				}
				else {
					zoom_child(e, xmin, ratio);
					update_text(e);
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		search();
	}
	function unzoom() {
		unzoombtn.classList.add("hide");
		var el = document.getElementById("frames").children;
		for(var i = 0; i < el.length; i++) {
			el[i].classList.remove("parent");
			el[i].classList.remove("hide");
			zoom_reset(el[i]);
			update_text(el[i]);
		}
		search();
	}

	// search
	function toggle_ignorecase() {
		ignorecase = !ignorecase;
		if (ignorecase) {
			ignorecaseBtn.classList.add("show");
		} else {
			ignorecaseBtn.classList.remove("show");
		}
		reset_search();
		search();
	}
	function reset_search() {
		var el = document.querySelectorAll("#frames rect");
		for (var i = 0; i < el.length; i++) {
			orig_load(el[i], "fill")
		}
	}
	function search_prompt() {
		if (!searching) {
			var term = prompt("Enter a search term (regexp " +
			    "allowed, eg: ^ext4_)"
			    + (ignorecase ? ", ignoring case" : "")
			    + "\nPress Ctrl-i to toggle case sensitivity", "");
			if (term != null) {
				currentSearchTerm = term;
				search();
			}
		} else {
			reset_search();
			searching = 0;
			currentSearchTerm = null;
			searchbtn.classList.remove("show");
			searchbtn.firstChild.nodeValue = "Search"
			matchedtxt.classList.add("hide");
			matchedtxt.firstChild.nodeValue = ""
		}
	}
	function search(term) {
		if (currentSearchTerm === null) return;
		var term = currentSearchTerm;

		var re = new RegExp(term, ignorecase ? 'i' : '');
		var el = document.getElementById("frames").children;
		var matches = new Object();
		var maxwidth = 0;
		for (var i = 0; i < el.length; i++) {
			var e = el[i];
			var func = g_to_func(e);
			var rect = find_child(e, "rect");
			if (func == null || rect == null)
				continue;

			// Save max width. Only works as we have a root frame
			var w = parseFloat(rect.attributes.width.value);
			if (w > maxwidth)
				maxwidth = w;

			if (func.match(re)) {
				// highlight
				var x = parseFloat(rect.attributes.x.value);
				orig_save(rect, "fill");
				rect.attributes.fill.value = "rgb(230,0,230)";

				// remember matches
				if (matches[x] == undefined) {
					matches[x] = w;
				} else {
					if (w > matches[x]) {
						// overwrite with parent
						matches[x] = w;
					}
				}
				searching = 1;
			}
		}
		if (!searching)
			return;

		searchbtn.classList.add("show");
		searchbtn.firstChild.nodeValue = "Reset Search";

		// calculate percent matched, excluding vertical overlap
		var count = 0;
		var lastx = -1;
		var lastw = 0;
		var keys = Array();
		for (k in matches) {
			if (matches.hasOwnProperty(k))
				keys.push(k);
		}
		// sort the matched frames by their x location
		// ascending, then width descending
		keys.sort(function(a, b){
			return a - b;
		});
		// Step through frames saving only the biggest bottom-up frames
		// thanks to the sort order. This relies on the tree property
		// where children are always smaller than their parents.
		var fudge = 0.0001;	// JavaScript floating point
		for (var k in keys) {
			var x = parseFloat(keys[k]);
			var w = matches[keys[k]];
			if (x >= lastx + lastw - fudge) {
				count += w;
				lastx = x;
				lastw = w;
			}
		}
		// display matched percent
		matchedtxt.classList.remove("hide");
		var pct = 100 * count / maxwidth;
		if (pct != 100) pct = pct.toFixed(1)
		matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";
	}
]]>
</script>
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<text id="title" x="600.00" y="24" >Flame Graph</text>
<text id="details" x="10.00" y="469" > </text>
<text id="unzoom" x="10.00" y="24" class="hide">Reset Zoom</text>
<text id="search" x="1090.00" y="24" >Search</text>
<text id="ignorecase" x="1174.00" y="24" >ic</text>
<text id="matched" x="1090.00" y="469" > </text>
<g id="frames">
<g >
<title>runtime.gcMarkTermination (1 samples, 0.04%)</title><rect x="747.8" y="389" width="0.5" height="15.0" fill="rgb(213,188,51)" rx="2" ry="2" />
<text  x="750.84" y="399.5" ></text>
</g>
<g >
<title>runtime.walltime1 (4 samples, 0.15%)</title><rect x="1187.7" y="421" width="1.8" height="15.0" fill="rgb(223,225,29)" rx="2" ry="2" />
<text  x="1190.73" y="431.5" ></text>
</g>
<g >
<title>runtime.(*mheap).freeMSpanLocked (1 samples, 0.04%)</title><rect x="746.9" y="325" width="0.5" height="15.0" fill="rgb(216,201,44)" rx="2" ry="2" />
<text  x="749.93" y="335.5" ></text>
</g>
<g >
<title>runtime.lockWithRank (1 samples, 0.04%)</title><rect x="91.0" y="197" width="0.4" height="15.0" fill="rgb(237,47,37)" rx="2" ry="2" />
<text  x="93.97" y="207.5" ></text>
</g>
<g >
<title>runtime.wbBufFlush (1 samples, 0.04%)</title><rect x="1022.1" y="293" width="0.5" height="15.0" fill="rgb(230,90,48)" rx="2" ry="2" />
<text  x="1025.14" y="303.5" ></text>
</g>
<g >
<title>runtime.gcDrainN (2 samples, 0.08%)</title><rect x="866.1" y="165" width="0.9" height="15.0" fill="rgb(229,220,46)" rx="2" ry="2" />
<text  x="869.11" y="175.5" ></text>
</g>
<g >
<title>runtime.exitsyscall (14 samples, 0.54%)</title><rect x="698.3" y="197" width="6.3" height="15.0" fill="rgb(223,224,51)" rx="2" ry="2" />
<text  x="701.26" y="207.5" ></text>
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<g >
<title>runtime.(*mcache).prepareForSweep (1 samples, 0.04%)</title><rect x="1159.1" y="325" width="0.4" height="15.0" fill="rgb(225,174,42)" rx="2" ry="2" />
<text  x="1162.07" y="335.5" ></text>
</g>
<g >
<title>runtime.arenaIndex (1 samples, 0.04%)</title><rect x="762.4" y="357" width="0.5" height="15.0" fill="rgb(223,180,9)" rx="2" ry="2" />
<text  x="765.40" y="367.5" ></text>
</g>
<g >
<title>runtime.nextFreeFast (5 samples, 0.19%)</title><rect x="77.8" y="229" width="2.3" height="15.0" fill="rgb(210,44,16)" rx="2" ry="2" />
<text  x="80.78" y="239.5" ></text>
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<g >
<title>sync.(*poolChain).pushHead (5 samples, 0.19%)</title><rect x="726.9" y="357" width="2.3" height="15.0" fill="rgb(205,52,34)" rx="2" ry="2" />
<text  x="729.92" y="367.5" ></text>
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<g >
<title>runtime.mallocgc (22 samples, 0.85%)</title><rect x="67.8" y="229" width="10.0" height="15.0" fill="rgb(234,61,15)" rx="2" ry="2" />
<text  x="70.77" y="239.5" ></text>
</g>
<g >
<title>github.com/phuslu/fastdns.(*Message).SetResponseHeader (4 samples, 0.15%)</title><rect x="52.8" y="325" width="1.8" height="15.0" fill="rgb(234,116,24)" rx="2" ry="2" />
<text  x="55.76" y="335.5" ></text>
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<g >
<title>runtime.exitsyscallfast (5 samples, 0.19%)</title><rect x="1015.3" y="229" width="2.3" height="15.0" fill="rgb(220,128,45)" rx="2" ry="2" />
<text  x="1018.32" y="239.5" ></text>
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<g >
<title>runtime.(*mheap).alloc (1 samples, 0.04%)</title><rect x="68.7" y="149" width="0.4" height="15.0" fill="rgb(220,143,30)" rx="2" ry="2" />
<text  x="71.68" y="159.5" ></text>
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<g >
<title>runtime.(*mheap).alloc (3 samples, 0.12%)</title><rect x="863.4" y="165" width="1.3" height="15.0" fill="rgb(223,24,16)" rx="2" ry="2" />
<text  x="866.38" y="175.5" ></text>
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<g >
<title>sync.(*Pool).pin (6 samples, 0.23%)</title><rect x="724.2" y="357" width="2.7" height="15.0" fill="rgb(228,13,49)" rx="2" ry="2" />
<text  x="727.19" y="367.5" ></text>
</g>
<g >
<title>runtime.heapBits.next (1 samples, 0.04%)</title><rect x="762.9" y="357" width="0.4" height="15.0" fill="rgb(205,183,12)" rx="2" ry="2" />
<text  x="765.85" y="367.5" ></text>
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<g >
<title>runtime.notewakeup (6 samples, 0.23%)</title><rect x="1177.7" y="325" width="2.7" height="15.0" fill="rgb(249,164,13)" rx="2" ry="2" />
<text  x="1180.72" y="335.5" ></text>
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<g >
<title>runtime.gcAssistAlloc (18 samples, 0.69%)</title><rect x="69.6" y="213" width="8.2" height="15.0" fill="rgb(208,210,43)" rx="2" ry="2" />
<text  x="72.59" y="223.5" ></text>
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<g >
<title>runtime.schedule (315 samples, 12.14%)</title><rect x="1039.0" y="389" width="143.3" height="15.0" fill="rgb(218,216,19)" rx="2" ry="2" />
<text  x="1041.97" y="399.5" >runtime.schedule</text>
</g>
<g >
<title>runtime.unlockWithRank (7 samples, 0.27%)</title><rect x="823.4" y="309" width="3.1" height="15.0" fill="rgb(247,115,27)" rx="2" ry="2" />
<text  x="826.35" y="319.5" ></text>
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<g >
<title>runtime.casgstatus (5 samples, 0.19%)</title><rect x="1067.2" y="357" width="2.3" height="15.0" fill="rgb(237,99,6)" rx="2" ry="2" />
<text  x="1070.18" y="367.5" ></text>
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<g >
<title>runtime.scanstack.func1 (3 samples, 0.12%)</title><rect x="763.3" y="293" width="1.4" height="15.0" fill="rgb(250,84,10)" rx="2" ry="2" />
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<g >
<title>runtime.bulkBarrierPreWrite (1 samples, 0.04%)</title><rect x="1022.1" y="309" width="0.5" height="15.0" fill="rgb(225,227,11)" rx="2" ry="2" />
<text  x="1025.14" y="319.5" ></text>
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<g >
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<text  x="1021.96" y="287.5" ></text>
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<g >
<title>runtime.gcAssistAlloc.func1 (18 samples, 0.69%)</title><rect x="69.6" y="181" width="8.2" height="15.0" fill="rgb(207,182,53)" rx="2" ry="2" />
<text  x="72.59" y="191.5" ></text>
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<g >
<title>net.(*UDPConn).ReadFromUDP (423 samples, 16.31%)</title><rect x="839.3" y="373" width="192.4" height="15.0" fill="rgb(248,4,0)" rx="2" ry="2" />
<text  x="842.28" y="383.5" >net.(*UDPConn).ReadFromUDP</text>
</g>
<g >
<title>runtime.pMask.read (2 samples, 0.08%)</title><rect x="1147.7" y="357" width="0.9" height="15.0" fill="rgb(207,29,8)" rx="2" ry="2" />
<text  x="1150.69" y="367.5" ></text>
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<g >
<title>runtime.systemstack (1 samples, 0.04%)</title><rect x="1022.1" y="277" width="0.5" height="15.0" fill="rgb(240,201,51)" rx="2" ry="2" />
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<g >
<title>runtime.getStackMap (1 samples, 0.04%)</title><rect x="763.8" y="261" width="0.4" height="15.0" fill="rgb(223,35,14)" rx="2" ry="2" />
<text  x="766.76" y="271.5" ></text>
</g>
<g >
<title>runtime.unlockWithRank (1 samples, 0.04%)</title><rect x="1033.5" y="389" width="0.5" height="15.0" fill="rgb(238,100,15)" rx="2" ry="2" />
<text  x="1036.52" y="399.5" ></text>
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<g >
<title>runtime.resetspinning (7 samples, 0.27%)</title><rect x="1177.3" y="373" width="3.1" height="15.0" fill="rgb(226,227,15)" rx="2" ry="2" />
<text  x="1180.26" y="383.5" ></text>
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<g >
<title>runtime.(*mcache).releaseAll (1 samples, 0.04%)</title><rect x="747.8" y="293" width="0.5" height="15.0" fill="rgb(226,11,15)" rx="2" ry="2" />
<text  x="750.84" y="303.5" ></text>
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<g >
<title>runtime.mallocgc (16 samples, 0.62%)</title><rect x="1023.5" y="341" width="7.3" height="15.0" fill="rgb(250,9,24)" rx="2" ry="2" />
<text  x="1026.51" y="351.5" ></text>
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<g >
<title>runtime.casgstatus (3 samples, 0.12%)</title><rect x="1014.0" y="229" width="1.3" height="15.0" fill="rgb(247,8,37)" rx="2" ry="2" />
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<g >
<title>runtime.findrunnable (1 samples, 0.04%)</title><rect x="1033.1" y="357" width="0.4" height="15.0" fill="rgb(229,108,7)" rx="2" ry="2" />
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