From 5c1ff3ed61e59a67cadf4db208e03d41a2639fc7 Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Thu, 24 Oct 2019 09:46:52 -0700
Subject: [PATCH] Test to understand how cargoflame works.

---
 .gitignore         |   2 +
 Cargo.lock         |   6 +
 Cargo.toml         |  12 ++
 src/flamegraph.svg | 300 +++++++++++++++++++++++++++++++++++++++++++++
 src/main.rs        |  33 +++++
 5 files changed, 353 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/flamegraph.svg
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..53eaa21
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+**/*.rs.bk
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..15bcdff
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,6 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "rustperf"
+version = "0.1.0"
+
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..dd446df
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "rustperf"
+version = "0.1.0"
+authors = ["Bill Thiede <git@xinu.tv>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+
+[profile.release]
+debug = true
diff --git a/src/flamegraph.svg b/src/flamegraph.svg
new file mode 100644
index 0000000..162639d
--- /dev/null
+++ b/src/flamegraph.svg
@@ -0,0 +1,300 @@
+<?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="326" onload="init(evt)" viewBox="0 0 1200 326" 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.--><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">.func_g:hover { stroke:black; stroke-width:0.5; cursor:pointer; }</style><script type="text/ecmascript"><![CDATA[var nametype = 'Function:';
+var fontsize = 12;
+var fontwidth = 0.59;
+var xpad = 10;
+var inverted = false;
+var searchcolor = 'rgb(230,0,230)';]]><![CDATA[var details, searchbtn, matchedtxt, svg;
+function init(evt) {
+    details = document.getElementById("details").firstChild;
+    searchbtn = document.getElementById("search");
+    matchedtxt = document.getElementById("matched");
+    svg = document.getElementsByTagName("svg")[0];
+    searching = 0;
+}
+// mouse-over for info
+function s(node) {		// show
+    info = g_to_text(node);
+    details.nodeValue = nametype + " " + info;
+}
+function c() {			// clear
+    details.nodeValue = ' ';
+}
+// ctrl-F for search
+window.addEventListener("keydown",function (e) {
+    if (e.keyCode === 114 || (e.ctrlKey && e.keyCode === 70)) {
+        e.preventDefault();
+        search_prompt();
+    }
+})
+// functions
+function find_child(parent, name, attr) {
+    var children = parent.childNodes;
+    for (var i=0; i<children.length;i++) {
+        if (children[i].tagName == name)
+            return (attr != undefined) ? children[i].attributes[attr].value : children[i];
+    }
+    return;
+}
+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*fontsize*fontwidth) {
+        t.textContent = "";
+        return;
+    }
+    t.textContent = txt;
+    // Fit in full text width
+    if (/^ *\$/.test(txt) || t.getSubStringLength(0, txt.length) < w)
+        return;
+    for (var x=txt.length-2; x>0; x--) {
+        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 - xpad) * ratio + xpad;
+            if(e.tagName == "text") e.attributes["x"].value = find_child(e.parentNode, "rect", "x") + 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-xpad, ratio);
+    }
+}
+function zoom_parent(e) {
+    if (e.attributes) {
+        if (e.attributes["x"] != undefined) {
+            orig_save(e, "x");
+            e.attributes["x"].value = xpad;
+        }
+        if (e.attributes["width"] != undefined) {
+            orig_save(e, "width");
+            e.attributes["width"].value = parseInt(svg.width.baseVal.value) - (xpad*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*xpad) / width;
+    // XXX: Workaround for JavaScript float issues (fix me)
+    var fudge = 0.0001;
+    var unzoombtn = document.getElementById("unzoom");
+    unzoombtn.style["opacity"] = "1.0";
+    var el = document.getElementsByTagName("g");
+    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);
+        // Is it an ancestor
+        if (!inverted) {
+            var upstack = parseFloat(a["y"].value) > ymin;
+        } else {
+            var upstack = parseFloat(a["y"].value) < ymin;
+        }
+        if (upstack) {
+            // Direct ancestor
+            if (ex <= xmin && (ex+ew+fudge) >= xmax) {
+                e.style["opacity"] = "0.5";
+                zoom_parent(e);
+                e.onclick = function(e){unzoom(); zoom(this);};
+                update_text(e);
+            }
+            // not in current path
+            else
+                e.style["display"] = "none";
+        }
+        // Children maybe
+        else {
+            // no common path
+            if (ex < xmin || ex + fudge >= xmax) {
+                e.style["display"] = "none";
+            }
+            else {
+                zoom_child(e, xmin, ratio);
+                e.onclick = function(e){zoom(this);};
+                update_text(e);
+            }
+        }
+    }
+}
+function unzoom() {
+    var unzoombtn = document.getElementById("unzoom");
+    unzoombtn.style["opacity"] = "0.0";
+    var el = document.getElementsByTagName("g");
+    for(i=0;i<el.length;i++) {
+        el[i].style["display"] = "block";
+        el[i].style["opacity"] = "1";
+        zoom_reset(el[i]);
+        update_text(el[i]);
+    }
+}
+// search
+function reset_search() {
+    var el = document.getElementsByTagName("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_)", "");
+        if (term != null) {
+            search(term)
+        }
+    } else {
+        reset_search();
+        searching = 0;
+        searchbtn.style["opacity"] = "0.1";
+        searchbtn.firstChild.nodeValue = "Search"
+        matchedtxt.style["opacity"] = "0.0";
+        matchedtxt.firstChild.nodeValue = ""
+    }
+}
+function search(term) {
+    var re = new RegExp(term);
+    var el = document.getElementsByTagName("g");
+    var matches = new Object();
+    var maxwidth = 0;
+    for (var i = 0; i < el.length; i++) {
+        var e = el[i];
+        if (e.attributes["class"].value != "func_g")
+            continue;
+        var func = g_to_func(e);
+        var rect = find_child(e, "rect");
+        if (rect == null) {
+            // the rect might be wrapped in an anchor
+            // if nameattr href is being used
+            if (rect = find_child(e, "a")) {
+                rect = find_child(r, "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 = searchcolor;
+            // 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.style["opacity"] = "1.0";
+    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.style["opacity"] = "1.0";
+    pct = 100 * count / maxwidth;
+    if (pct == 100)
+        pct = "100"
+    else
+        pct = pct.toFixed(1)
+    matchedtxt.firstChild.nodeValue = "Matched: " + pct + "%";
+}
+function searchover(e) {
+    searchbtn.style["opacity"] = "1.0";
+}
+function searchout(e) {
+    if (searching) {
+        searchbtn.style["opacity"] = "1.0";
+    } else {
+        searchbtn.style["opacity"] = "0.1";
+    }
+}
+]]></script><rect x="0" y="0" width="1200" height="326" fill="url(#background)"/><text text-anchor="middle" x="600.00" y="24.00" font-size="17" font-family="Verdana" fill="rgb(0, 0, 0)">Flame Graph</text><text id="details" text-anchor="left" x="10.00" y="309.00" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"> </text><text id="unzoom" onclick="unzoom()" style="opacity:0.0;cursor:pointer" text-anchor="left" x="10.00" y="24.00" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">Reset Zoom</text><text id="search" onmouseover="searchover()" onmouseout="searchout()" onclick="search_prompt()" style="opacity:0.1;cursor:pointer" text-anchor="left" x="1090.00" y="24.00" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">Search</text><text id="matched" text-anchor="left" x="1090.00" y="309.00" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"> </text><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>perf_4.19 (4 samples, 0.70%)</title><rect x="10" y="261" width="8" height="15" fill="rgb(222,89,39)"/><text text-anchor="left" x="13.00" y="271.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>[unknown] (4 samples, 0.70%)</title><rect x="10" y="245" width="8" height="15" fill="rgb(225,105,42)"/><text text-anchor="left" x="13.00" y="255.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>entry_SYSCALL_64_after_hwframe (4 samples, 0.70%)</title><rect x="10" y="229" width="8" height="15" fill="rgb(249,161,12)"/><text text-anchor="left" x="13.00" y="239.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>do_syscall_64 (4 samples, 0.70%)</title><rect x="10" y="213" width="8" height="15" fill="rgb(219,89,8)"/><text text-anchor="left" x="13.00" y="223.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__x64_sys_execve (4 samples, 0.70%)</title><rect x="10" y="197" width="8" height="15" fill="rgb(240,90,19)"/><text text-anchor="left" x="13.00" y="207.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__do_execve_file.isra.34 (4 samples, 0.70%)</title><rect x="10" y="181" width="8" height="15" fill="rgb(215,49,7)"/><text text-anchor="left" x="13.00" y="191.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>search_binary_handler (4 samples, 0.70%)</title><rect x="10" y="165" width="8" height="15" fill="rgb(235,73,14)"/><text text-anchor="left" x="13.00" y="175.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>load_elf_binary (4 samples, 0.70%)</title><rect x="10" y="149" width="8" height="15" fill="rgb(206,98,51)"/><text text-anchor="left" x="13.00" y="159.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>setup_new_exec (4 samples, 0.70%)</title><rect x="10" y="133" width="8" height="15" fill="rgb(223,64,12)"/><text text-anchor="left" x="13.00" y="143.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>perf_event_exec (4 samples, 0.70%)</title><rect x="10" y="117" width="8" height="15" fill="rgb(236,26,1)"/><text text-anchor="left" x="13.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__intel_pmu_enable_all.constprop.23 (4 samples, 0.70%)</title><rect x="10" y="101" width="8" height="15" fill="rgb(252,149,22)"/><text text-anchor="left" x="13.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>native_write_msr (4 samples, 0.70%)</title><rect x="10" y="85" width="8" height="15" fill="rgb(254,118,50)"/><text text-anchor="left" x="13.00" y="95.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>entry_SYSCALL_64_after_hwframe (1 samples, 0.18%)</title><rect x="18" y="229" width="2" height="15" fill="rgb(253,144,6)"/><text text-anchor="left" x="21.00" y="239.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>do_syscall_64 (1 samples, 0.18%)</title><rect x="18" y="213" width="2" height="15" fill="rgb(240,155,49)"/><text text-anchor="left" x="21.00" y="223.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__x64_sys_execve (1 samples, 0.18%)</title><rect x="18" y="197" width="2" height="15" fill="rgb(218,5,32)"/><text text-anchor="left" x="21.00" y="207.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__do_execve_file.isra.34 (1 samples, 0.18%)</title><rect x="18" y="181" width="2" height="15" fill="rgb(213,76,41)"/><text text-anchor="left" x="21.00" y="191.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>search_binary_handler (1 samples, 0.18%)</title><rect x="18" y="165" width="2" height="15" fill="rgb(249,76,38)"/><text text-anchor="left" x="21.00" y="175.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>load_elf_binary (1 samples, 0.18%)</title><rect x="18" y="149" width="2" height="15" fill="rgb(249,154,25)"/><text text-anchor="left" x="21.00" y="159.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__clear_user (1 samples, 0.18%)</title><rect x="18" y="133" width="2" height="15" fill="rgb(215,58,5)"/><text text-anchor="left" x="21.00" y="143.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>page_fault (1 samples, 0.18%)</title><rect x="18" y="117" width="2" height="15" fill="rgb(237,199,45)"/><text text-anchor="left" x="21.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__do_page_fault (1 samples, 0.18%)</title><rect x="18" y="101" width="2" height="15" fill="rgb(234,207,49)"/><text text-anchor="left" x="21.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>handle_mm_fault (1 samples, 0.18%)</title><rect x="18" y="85" width="2" height="15" fill="rgb(226,100,4)"/><text text-anchor="left" x="21.00" y="95.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__handle_mm_fault (1 samples, 0.18%)</title><rect x="18" y="69" width="2" height="15" fill="rgb(244,206,9)"/><text text-anchor="left" x="21.00" y="79.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>finish_fault (1 samples, 0.18%)</title><rect x="18" y="53" width="2" height="15" fill="rgb(215,56,40)"/><text text-anchor="left" x="21.00" y="63.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>alloc_set_pte (1 samples, 0.18%)</title><rect x="18" y="37" width="2" height="15" fill="rgb(248,209,46)"/><text text-anchor="left" x="21.00" y="47.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>[unknown] (4 samples, 0.70%)</title><rect x="18" y="245" width="8" height="15" fill="rgb(224,175,45)"/><text text-anchor="left" x="21.00" y="255.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>swapgs_restore_regs_and_return_to_usermode (3 samples, 0.53%)</title><rect x="20" y="229" width="6" height="15" fill="rgb(227,121,51)"/><text text-anchor="left" x="23.00" y="239.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>prepare_exit_to_usermode (3 samples, 0.53%)</title><rect x="20" y="213" width="6" height="15" fill="rgb(228,58,1)"/><text text-anchor="left" x="23.00" y="223.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>exit_to_usermode_loop (3 samples, 0.53%)</title><rect x="20" y="197" width="6" height="15" fill="rgb(207,227,41)"/><text text-anchor="left" x="23.00" y="207.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>schedule (3 samples, 0.53%)</title><rect x="20" y="181" width="6" height="15" fill="rgb(226,76,30)"/><text text-anchor="left" x="23.00" y="191.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__sched_text_start (3 samples, 0.53%)</title><rect x="20" y="165" width="6" height="15" fill="rgb(206,78,10)"/><text text-anchor="left" x="23.00" y="175.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>finish_task_switch (3 samples, 0.53%)</title><rect x="20" y="149" width="6" height="15" fill="rgb(242,94,34)"/><text text-anchor="left" x="23.00" y="159.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__perf_event_task_sched_in (3 samples, 0.53%)</title><rect x="20" y="133" width="6" height="15" fill="rgb(223,74,50)"/><text text-anchor="left" x="23.00" y="143.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__intel_pmu_enable_all.constprop.23 (3 samples, 0.53%)</title><rect x="20" y="117" width="6" height="15" fill="rgb(214,146,52)"/><text text-anchor="left" x="23.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>native_write_msr (3 samples, 0.53%)</title><rect x="20" y="101" width="6" height="15" fill="rgb(248,202,16)"/><text text-anchor="left" x="23.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>&lt;std::time::Instant as core::ops::arith::Sub&gt;::sub (21 samples, 3.69%)</title><rect x="57" y="101" width="44" height="15" fill="rgb(231,186,5)"/><text text-anchor="left" x="60.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">&lt;std..</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::sys::unix::time::Timespec::sub_timespec (17 samples, 2.99%)</title><rect x="65" y="85" width="36" height="15" fill="rgb(211,30,33)"/><text text-anchor="left" x="68.00" y="95.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std..</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>rustperf::one (164 samples, 28.82%)</title><rect x="45" y="117" width="340" height="15" fill="rgb(213,134,24)"/><text text-anchor="left" x="48.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">rustperf::one</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::time::Instant::now (137 samples, 24.08%)</title><rect x="101" y="101" width="284" height="15" fill="rgb(232,154,29)"/><text text-anchor="left" x="104.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::time::Instant::now</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__clock_gettime (127 samples, 22.32%)</title><rect x="121" y="85" width="264" height="15" fill="rgb(222,15,24)"/><text text-anchor="left" x="124.00" y="95.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__clock_gettime</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__vdso_clock_gettime (108 samples, 18.98%)</title><rect x="161" y="69" width="224" height="15" fill="rgb(242,211,49)"/><text text-anchor="left" x="164.00" y="79.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__vdso_clock_gettime</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>[[vdso]] (73 samples, 12.83%)</title><rect x="233" y="53" width="152" height="15" fill="rgb(244,220,15)"/><text text-anchor="left" x="236.00" y="63.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">[[vdso]]</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>&lt;std::time::Instant as core::ops::arith::Sub&gt;::sub (38 samples, 6.68%)</title><rect x="385" y="101" width="79" height="15" fill="rgb(214,222,1)"/><text text-anchor="left" x="388.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">&lt;std::tim..</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::sys::unix::time::Timespec::sub_timespec (28 samples, 4.92%)</title><rect x="406" y="85" width="58" height="15" fill="rgb(210,27,39)"/><text text-anchor="left" x="409.00" y="95.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::s..</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>rustperf::main (371 samples, 65.20%)</title><rect x="26" y="133" width="769" height="15" fill="rgb(205,147,41)"/><text text-anchor="left" x="29.00" y="143.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">rustperf::main</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>rustperf::two (198 samples, 34.80%)</title><rect x="385" y="117" width="410" height="15" fill="rgb(222,120,39)"/><text text-anchor="left" x="388.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">rustperf::two</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::time::Instant::now (160 samples, 28.12%)</title><rect x="464" y="101" width="331" height="15" fill="rgb(211,15,23)"/><text text-anchor="left" x="467.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::time::Instant::now</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__clock_gettime (153 samples, 26.89%)</title><rect x="478" y="85" width="317" height="15" fill="rgb(210,32,51)"/><text text-anchor="left" x="481.00" y="95.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__clock_gettime</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__vdso_clock_gettime (137 samples, 24.08%)</title><rect x="511" y="69" width="284" height="15" fill="rgb(206,30,22)"/><text text-anchor="left" x="514.00" y="79.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__vdso_clock_gettime</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>[[vdso]] (92 samples, 16.17%)</title><rect x="605" y="53" width="190" height="15" fill="rgb(225,39,48)"/><text text-anchor="left" x="608.00" y="63.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">[[vdso]]</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>&lt;std::time::Instant as core::ops::arith::Sub&gt;::sub (45 samples, 7.91%)</title><rect x="795" y="117" width="94" height="15" fill="rgb(249,158,4)"/><text text-anchor="left" x="798.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">&lt;std::time:..</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::sys::unix::time::Timespec::sub_timespec (33 samples, 5.80%)</title><rect x="820" y="101" width="69" height="15" fill="rgb(231,162,1)"/><text text-anchor="left" x="823.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::sy..</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>_start (560 samples, 98.42%)</title><rect x="26" y="245" width="1161" height="15" fill="rgb(217,88,22)"/><text text-anchor="left" x="29.00" y="255.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">_start</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__libc_start_main (560 samples, 98.42%)</title><rect x="26" y="229" width="1161" height="15" fill="rgb(254,110,49)"/><text text-anchor="left" x="29.00" y="239.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__libc_start_main</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>main (560 samples, 98.42%)</title><rect x="26" y="213" width="1161" height="15" fill="rgb(218,10,24)"/><text text-anchor="left" x="29.00" y="223.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">main</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::rt::lang_start_internal (560 samples, 98.42%)</title><rect x="26" y="197" width="1161" height="15" fill="rgb(214,64,54)"/><text text-anchor="left" x="29.00" y="207.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::rt::lang_start_internal</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__rust_maybe_catch_panic (560 samples, 98.42%)</title><rect x="26" y="181" width="1161" height="15" fill="rgb(217,196,48)"/><text text-anchor="left" x="29.00" y="191.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__rust_maybe_catch_panic</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::panicking::try::do_call (560 samples, 98.42%)</title><rect x="26" y="165" width="1161" height="15" fill="rgb(251,25,30)"/><text text-anchor="left" x="29.00" y="175.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::panicking::try::do_call</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::h80d40c3a4e341551 (560 samples, 98.42%)</title><rect x="26" y="149" width="1161" height="15" fill="rgb(231,93,9)"/><text text-anchor="left" x="29.00" y="159.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::h80d40c3a4e341551</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>rustperf::one (189 samples, 33.22%)</title><rect x="795" y="133" width="392" height="15" fill="rgb(209,178,53)"/><text text-anchor="left" x="798.00" y="143.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">rustperf::one</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::time::Instant::now (144 samples, 25.31%)</title><rect x="889" y="117" width="298" height="15" fill="rgb(218,195,22)"/><text text-anchor="left" x="892.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">std::time::Instant::now</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__clock_gettime (134 samples, 23.55%)</title><rect x="910" y="101" width="277" height="15" fill="rgb(212,111,51)"/><text text-anchor="left" x="913.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__clock_gettime</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__vdso_clock_gettime (121 samples, 21.27%)</title><rect x="936" y="85" width="251" height="15" fill="rgb(208,74,28)"/><text text-anchor="left" x="939.00" y="95.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">__vdso_clock_gettime</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>[[vdso]] (69 samples, 12.13%)</title><rect x="1044" y="69" width="143" height="15" fill="rgb(221,101,25)"/><text text-anchor="left" x="1047.00" y="79.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">[[vdso]]</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>all (569 samples, 100%)</title><rect x="10" y="277" width="1180" height="15" fill="rgb(226,204,4)"/><text text-anchor="left" x="13.00" y="287.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>rustperf (565 samples, 99.30%)</title><rect x="18" y="261" width="1172" height="15" fill="rgb(214,76,50)"/><text text-anchor="left" x="21.00" y="271.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)">rustperf</text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>std::time::Instant::now (1 samples, 0.18%)</title><rect x="1187" y="245" width="3" height="15" fill="rgb(234,48,39)"/><text text-anchor="left" x="1190.00" y="255.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>swapgs_restore_regs_and_return_to_usermode (1 samples, 0.18%)</title><rect x="1187" y="229" width="3" height="15" fill="rgb(232,174,47)"/><text text-anchor="left" x="1190.00" y="239.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>prepare_exit_to_usermode (1 samples, 0.18%)</title><rect x="1187" y="213" width="3" height="15" fill="rgb(238,61,20)"/><text text-anchor="left" x="1190.00" y="223.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>exit_to_usermode_loop (1 samples, 0.18%)</title><rect x="1187" y="197" width="3" height="15" fill="rgb(236,84,0)"/><text text-anchor="left" x="1190.00" y="207.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>schedule (1 samples, 0.18%)</title><rect x="1187" y="181" width="3" height="15" fill="rgb(211,136,6)"/><text text-anchor="left" x="1190.00" y="191.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__sched_text_start (1 samples, 0.18%)</title><rect x="1187" y="165" width="3" height="15" fill="rgb(240,71,19)"/><text text-anchor="left" x="1190.00" y="175.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>finish_task_switch (1 samples, 0.18%)</title><rect x="1187" y="149" width="3" height="15" fill="rgb(244,9,15)"/><text text-anchor="left" x="1190.00" y="159.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__perf_event_task_sched_in (1 samples, 0.18%)</title><rect x="1187" y="133" width="3" height="15" fill="rgb(238,41,38)"/><text text-anchor="left" x="1190.00" y="143.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>__intel_pmu_enable_all.constprop.23 (1 samples, 0.18%)</title><rect x="1187" y="117" width="3" height="15" fill="rgb(235,28,45)"/><text text-anchor="left" x="1190.00" y="127.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g><g class="func_g" onmouseover="s(this)" onmouseout="c()" onclick="zoom(this)"><title>native_write_msr (1 samples, 0.18%)</title><rect x="1187" y="101" width="3" height="15" fill="rgb(209,15,24)"/><text text-anchor="left" x="1190.00" y="111.50" font-size="12" font-family="Verdana" fill="rgb(0, 0, 0)"></text></g></svg>
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..4054fa3
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,33 @@
+use std::time::{Duration, Instant};
+
+#[inline(never)]
+fn one(runtime: Duration) {
+    println!("Starting one");
+    let start = Instant::now();
+    loop {
+        let diff = Instant::now() - start;
+        if diff > runtime {
+            return;
+        }
+    }
+}
+
+#[inline(never)]
+fn two(runtime: Duration) {
+    println!("Starting two");
+    let start = Instant::now();
+    loop {
+        let diff = Instant::now() - start;
+        if diff > runtime {
+            return;
+        }
+    }
+}
+
+fn main() {
+    let runtime = Duration::new(2, 0);
+
+    one(runtime);
+    two(runtime);
+    one(runtime);
+}