1 files changed, 195 insertions, 0 deletions
diff --git a/testing/talos/talos/pageloader/chrome/report.js b/testing/talos/talos/pageloader/chrome/report.js
new file mode 100644
index 0000000000..7f5d61922a
--- /dev/null
+++ b/testing/talos/talos/pageloader/chrome/report.js
@@ -0,0 +1,195 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// given an array of strings, finds the longest common prefix
+function findCommonPrefixLength(strs) {
+  if (strs.length < 2) {
+    // only one page in the manifest
+    // i.e. http://localhost/tests/perf-reftest/bloom-basic.html
+    var place = strs[0].lastIndexOf("/");
+    if (place < 0) {
+      place = 0;
+    }
+    return place;
+  }
+
+  var len = 0;
+  do {
+    var newlen = len + 1;
+    var newprefix = null;
+    var failed = false;
+    for (var i = 0; i < strs.length; i++) {
+      if (newlen > strs[i].length) {
+        failed = true;
+        break;
+      }
+
+      var s = strs[i].substr(0, newlen);
+      if (newprefix == null) {
+        newprefix = s;
+      } else if (newprefix != s) {
+        failed = true;
+        break;
+      }
+    }
+
+    if (failed) {
+      break;
+    }
+
+    len++;
+  } while (true);
+  return len;
+}
+
+// Constructor
+function Report() {
+  this.timeVals = {};
+  this.totalCCTime = 0;
+  this.showTotalCCTime = false;
+}
+
+Report.prototype.pageNames = function () {
+  var retval = [];
+  for (var page in this.timeVals) {
+    retval.push(page);
+  }
+  return retval;
+};
+
+Report.prototype.getReport = function () {
+  var report;
+  var pages = this.pageNames();
+  var prefixLen = findCommonPrefixLength(pages);
+
+  report = "__start_tp_report\n";
+  report += "_x_x_mozilla_page_load\n";
+  report += "_x_x_mozilla_page_load_details\n";
+  report += "|i|pagename|runs|\n";
+
+  for (var i = 0; i < pages.length; i++) {
+    // don't report any measurements that were reported for about:blank
+    // some tests (like about-preferences) use it as a dummy test page
+    if (pages[i] == "about:blank") {
+      continue;
+    }
+    report +=
+      "|" +
+      i +
+      ";" +
+      pages[i].substr(prefixLen) +
+      ";" +
+      this.timeVals[pages[i]].join(";") +
+      "\n";
+  }
+  report += "__end_tp_report\n";
+
+  if (this.showTotalCCTime) {
+    report += "__start_cc_report\n";
+    report += "_x_x_mozilla_cycle_collect," + this.totalCCTime + "\n";
+    report += "__end_cc_report\n";
+  }
+  var now = window.performance.now();
+  report += "__startTimestamp" + now + "__endTimestamp\n"; // timestamp for determning shutdown time, used by talos
+
+  return report;
+};
+
+Report.prototype.getReportSummary = function () {
+  function average(arr) {
+    var sum = 0;
+    for (var i in arr) {
+      sum += arr[i];
+    }
+    return sum / (arr.length || 1);
+  }
+
+  function median(arr) {
+    if (!arr.length) {
+      return 0;
+    } // As good indication for "not available" as any other value.
+
+    var sorted = arr.slice(0).sort();
+    var mid = Math.floor(arr.length / 2);
+
+    if (sorted.length % 2) {
+      return sorted[mid];
+    }
+
+    return average(sorted.slice(mid, mid + 2));
+  }
+
+  // We use sample stddev and not population stddev because
+  // well.. it's a sample and we can't collect all/infinite number of values.
+  function stddev(arr) {
+    if (arr.length <= 1) {
+      return 0;
+    }
+    var avg = average(arr);
+
+    var squareDiffArr = arr.map(function (v) {
+      return Math.pow(v - avg, 2);
+    });
+    var sum = squareDiffArr.reduce(function (a, b) {
+      return a + b;
+    });
+    var rv = Math.sqrt(sum / (arr.length - 1));
+    return rv;
+  }
+
+  var report = "";
+  var pages = this.pageNames();
+  var prefixLen = findCommonPrefixLength(pages);
+
+  report += "------- Summary: start -------\n";
+  report += "Number of tests: " + pages.length + "\n";
+
+  for (var i = 0; i < pages.length; i++) {
+    var results = this.timeVals[pages[i]].map(function (v) {
+      return Number(v);
+    });
+
+    report +=
+      "\n[#" +
+      i +
+      "] " +
+      pages[i].substr(prefixLen) +
+      "  Cycles:" +
+      results.length +
+      "  Average:" +
+      average(results).toFixed(2) +
+      "  Median:" +
+      median(results).toFixed(2) +
+      "  stddev:" +
+      stddev(results).toFixed(2) +
+      " (" +
+      ((100 * stddev(results)) / median(results)).toFixed(1) +
+      "%)" +
+      (results.length < 5
+        ? ""
+        : "  stddev-sans-first:" + stddev(results.slice(1)).toFixed(2)) +
+      "\nValues: " +
+      results
+        .map(function (v) {
+          return v.toFixed(1);
+        })
+        .join("  ") +
+      "\n";
+  }
+  report += "-------- Summary: end --------\n";
+
+  return report;
+};
+
+Report.prototype.recordTime = function (pageName, ms) {
+  if (this.timeVals[pageName] == undefined) {
+    this.timeVals[pageName] = [];
+  }
+  this.timeVals[pageName].push(ms);
+};
+
+Report.prototype.recordCCTime = function (ms) {
+  this.totalCCTime += ms;
+  this.showTotalCCTime = true;
+};