USDT wait event tracepoint flamegraphs - pgbench c64 comparison

flamegraph-hwwatch.svg

flamegraph-pg-stock.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="2134" onload="init(evt)" viewBox="0 0 1200 2134" 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;

		// use GET parameters to restore a flamegraphs state.
		var params = get_params();
		if (params.x && params.y)
			zoom(find_group(document.querySelector('[x="' + params.x + '"][y="' + params.y + '"]')));
                if (params.s) search(params.s);
	}

	// event listeners
	window.addEventListener("click", function(e) {
		var target = find_group(e.target);
		if (target) {
			if (target.nodeName == "a") {
				if (e.ctrlKey === false) return;
				e.preventDefault();
			}
			if (target.classList.contains("parent")) unzoom(true);
			zoom(target);
			if (!document.querySelector('.parent')) {
				// we have basically done a clearzoom so clear the url
				var params = get_params();
				if (params.x) delete params.x;
				if (params.y) delete params.y;
				history.replaceState(null, null, parse_params(params));
				unzoombtn.classList.add("hide");
				return;
			}

			// set parameters for zoom state
			var el = target.querySelector("rect");
			if (el && el.attributes && el.attributes.y && el.attributes._orig_x) {
				var params = get_params()
				params.x = el.attributes._orig_x.value;
				params.y = el.attributes.y.value;
				history.replaceState(null, null, parse_params(params));
			}
		}
		else if (e.target.id == "unzoom") clearzoom();
		else if (e.target.id == "search") search_prompt();
		else if (e.target.id == "ignorecase") toggle_ignorecase();
	}, false)

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

	// clear
	window.addEventListener("mouseout", function(e) {
		var target = find_group(e.target);
		if (target) details.nodeValue = ' ';
	}, false)

	// ctrl-F for search
	// ctrl-I to toggle case-sensitive search
	window.addEventListener("keydown",function (e) {
		if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {
			e.preventDefault();
			search_prompt();
		}
		else if (e.ctrlKey && e.keyCode === 73) {
			e.preventDefault();
			toggle_ignorecase();
		}
	}, false)

	// functions
	function get_params() {
		var params = {};
		var paramsarr = window.location.search.substr(1).split('&');
		for (var i = 0; i < paramsarr.length; ++i) {
			var tmp = paramsarr[i].split("=");
			if (!tmp[0] || !tmp[1]) continue;
			params[tmp[0]]  = decodeURIComponent(tmp[1]);
		}
		return params;
	}
	function parse_params(params) {
		var uri = "?";
		for (var key in params) {
			uri += key + '=' + encodeURIComponent(params[key]) + '&';
		}
		if (uri.slice(-1) == "&")
			uri = uri.substring(0, uri.length - 1);
		if (uri == '?')
			uri = window.location.href.split('?')[0];
		return uri;
	}
	function find_child(node, selector) {
		var children = node.querySelectorAll(selector);
		if (children.length) return children[0];
	}
	function find_group(node) {
		var parent = node.parentElement;
		if (!parent) return;
		if (parent.id == "frames") return node;
		return find_group(parent);
	}
	function orig_save(e, attr, val) {
		if (e.attributes["_orig_" + attr] != undefined) return;
		if (e.attributes[attr] == undefined) return;
		if (val == undefined) val = e.attributes[attr].value;
		e.setAttribute("_orig_" + attr, val);
	}
	function orig_load(e, attr) {
		if (e.attributes["_orig_"+attr] == undefined) return;
		e.attributes[attr].value = e.attributes["_orig_" + attr].value;
		e.removeAttribute("_orig_"+attr);
	}
	function g_to_text(e) {
		var text = find_child(e, "title").firstChild.nodeValue;
		return (text)
	}
	function g_to_func(e) {
		var func = g_to_text(e);
		// if there's any manipulation we want to do to the function
		// name before it's searched, do it here before returning.
		return (func);
	}
	function update_text(e) {
		var r = find_child(e, "rect");
		var t = find_child(e, "text");
		var w = parseFloat(r.attributes.width.value) -3;
		var txt = find_child(e, "title").textContent.replace(/\([^(]*\)$/,"");
		t.attributes.x.value = parseFloat(r.attributes.x.value) + 3;

		// Smaller than this size won't fit anything
		if (w < 2 * 12 * 0.59) {
			t.textContent = "";
			return;
		}

		t.textContent = txt;
		var sl = t.getSubStringLength(0, txt.length);
		// check if only whitespace or if we can fit the entire string into width w
		if (/^ *$/.test(txt) || sl < w)
			return;

		// this isn't perfect, but gives a good starting point
		// and avoids calling getSubStringLength too often
		var start = Math.floor((w/sl) * txt.length);
		for (var x = start; x > 0; x = x-2) {
			if (t.getSubStringLength(0, x + 2) <= w) {
				t.textContent = txt.substring(0, x) + "..";
				return;
			}
		}
		t.textContent = "";
	}

	// zoom
	function zoom_reset(e) {
		if (e.attributes != undefined) {
			orig_load(e, "x");
			orig_load(e, "width");
		}
		if (e.childNodes == undefined) return;
		for (var i = 0, c = e.childNodes; i < c.length; i++) {
			zoom_reset(c[i]);
		}
	}
	function zoom_child(e, x, ratio) {
		if (e.attributes != undefined) {
			if (e.attributes.x != undefined) {
				orig_save(e, "x");
				e.attributes.x.value = (parseFloat(e.attributes.x.value) - x - 10) * ratio + 10;
				if (e.tagName == "text")
					e.attributes.x.value = find_child(e.parentNode, "rect[x]").attributes.x.value + 3;
			}
			if (e.attributes.width != undefined) {
				orig_save(e, "width");
				e.attributes.width.value = parseFloat(e.attributes.width.value) * ratio;
			}
		}

		if (e.childNodes == undefined) return;
		for (var i = 0, c = e.childNodes; i < c.length; i++) {
			zoom_child(c[i], x - 10, ratio);
		}
	}
	function zoom_parent(e) {
		if (e.attributes) {
			if (e.attributes.x != undefined) {
				orig_save(e, "x");
				e.attributes.x.value = 10;
			}
			if (e.attributes.width != undefined) {
				orig_save(e, "width");
				e.attributes.width.value = parseInt(svg.width.baseVal.value) - (10 * 2);
			}
		}
		if (e.childNodes == undefined) return;
		for (var i = 0, c = e.childNodes; i < c.length; i++) {
			zoom_parent(c[i]);
		}
	}
	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++) {
			var e = el[i];
			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
			if (0 == 0) {
				upstack = parseFloat(a.y.value) > ymin;
			} else {
				upstack = parseFloat(a.y.value) < ymin;
			}
			if (upstack) {
				// Direct ancestor
				if (ex <= xmin && (ex+ew+fudge) >= xmax) {
					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);
				}
			}
		}
		search();
	}
	function unzoom(dont_update_text) {
		unzoombtn.classList.add("hide");
		var el = document.getElementById("frames").children;

flamegraph-pg-usdt-bpftrace.svg

flamegraph-pg-usdt-nodtrace.svg

flamegraph-pg-usdt.svg

flamegraph-r2-pgwt.svg

flamegraph-r3-pgwt.svg

flamegraph-r4-pgwt.svg

flamegraph-r5-pgwt.svg

flamegraph-r5-stock.svg

flamegraph-r5-usdt-bpf.svg

flamegraph-r5-usdt-idle.svg

flamegraph-r6-pgwt-usdt.svg