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products/Sources/formale Sprachen/C/Firefox/dom/serviceworkers/test/performance/ (Firefox Browser Version 153.0.1^©) Datei vom 27.6.2026 mit Größe 4 kB

Quelle test_update.html

Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/serviceworkers/test/performance/test_update.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Service worker performance test: update</title>
</head>
<div id="content"></div>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="../utils.js"></script>
<script src="perfutils.js"></script>
<script>

  "use strict";

  const VACUOUS_UPDATE = "Vacuous update";
  const SERVER_UPDATE = "Server update";
  const MAIN_CALLBACK = "Main callback";
  const SW_CALLBACK = "SW callback";
  const UPDATE_INTERNALS = "Update internals";

  var journal = {};
  journal[VACUOUS_UPDATE] = [];
  journal[SERVER_UPDATE] = [];
  journal[MAIN_CALLBACK] = [];
  journal[SW_CALLBACK] = [];
  journal[UPDATE_INTERNALS] = [];

  const ITERATIONS = 11;

  var perfMetadata = {
    owner: "DOM LWS",
    name: "Service Worker Update",
    description: "Test updating.",
    options: {
      default: {
        perfherder: true,
        perfherder_metrics: [
          // Here, we can't use the constants defined above because perfherder
          // grabs data from the parse tree.
          { name: "Vacuous update", unit: "ms", shouldAlert: true },
          { name: "Server update", unit: "ms", shouldAlert: true },
          { name: "Main callback", unit: "ms", shouldAlert: true },
          { name: "SW callback", unit: "ms", shouldAlert: true },
          { name: "Update internals", unit: "ms", shouldAlert: true },
        ],
        verbose: true,
        manifest: "perftest.toml",
        manifest_flavor: "plain",
      },
    },
  };

  async function testVacuousUpdate() {
    async function measure() {
      let reg = await navigator.serviceWorker.register("sw_empty.js");
      await waitForState(reg.installing, "activated");

      let begin_ts = performance.now();
      await reg.update();
      let end_ts = performance.now();

      await reg.unregister();

      journal[VACUOUS_UPDATE].push(end_ts - begin_ts);
    }

    for (let i = 0; i < ITERATIONS; i++) {
      await measure();
    }
  }

  async function testServerUpdate() {
    async function measure() {
      await startProfiler();

      let reg = await navigator.serviceWorker.register("sw_serverupdate.sjs");

      let promiseSW = new Promise((resolve, reject) => {
        window.onmessage = (e) => {
          is(e.data, "updatefound", "got updatefound message");
          resolve(performance.now());
        };
      });

      let callbackCounter = 0;
      let promiseMain = new Promise((resolve, reject) => {
        reg.onupdatefound = (e) => {
          callbackCounter++;
          // The first "update" happens for the original script,
          // and isn't what we're interested in measuring.
          if (callbackCounter == 2) {
            resolve(performance.now());
          }
        };
      });

      is(callbackCounter, 0, "no onupdatefound calls");
      await waitForState(reg.installing, "activated");
      is(callbackCounter, 1, "one onupdatefound call");

      let content = document.getElementById("content");
      let iframe = document.createElement("iframe");
      iframe.setAttribute("src", "./fwd_messages_upward.html");
      content.appendChild(iframe);
      await new Promise(res => iframe.onload = res);

      let begin_ts = performance.now();
      await reg.update();
      let endUpdate_ts = performance.now();
      let endMainCallback_ts = await promiseMain;
      let endSWCallback_ts = await promiseSW;

      let pdata = await stopProfiler();
      let internals_ms = inspectProfile(pdata, [
        "ServiceWorkerRegistration::Update",
        "ServiceWorkerRegistration::Update (inner)",
        "ServiceWorkerUpdateJob::AsyncExecute",
        "ServiceWorkerUpdateJob::Update",
        "ServiceWorkerUpdateJob::Install"
      ]);

      await reg.unregister();

      journal[SERVER_UPDATE].push(endUpdate_ts - begin_ts);
      journal[MAIN_CALLBACK].push(endMainCallback_ts - begin_ts);
      journal[SW_CALLBACK].push(endSWCallback_ts - begin_ts);
      journal[UPDATE_INTERNALS].push(internals_ms);
    }

    for (let i = 0; i < ITERATIONS; i++) {
      await measure();
    }
  }

  add_task(async () => {
    await SpecialPowers.pushPrefEnv({
      set: [["dom.serviceWorkers.enabled", true],
            ["dom.serviceWorkers.testing.enabled", true],
            ["dom.serviceWorkers.update_delay", 0]]
    });

    add_task(() => SpecialPowers.popPrefEnv());
    ok(true);
  });

  add_task(testVacuousUpdate);
  add_task(testServerUpdate);

  add_task(() => reportMetrics(journal));

</script>
<body>
<div id="content"></div>
</body>
</html>

Messung V0.5 in Prozent

¤ Dauer der Verarbeitung: 0.12 Sekunden (vorverarbeitet am 2026-08-26) ¤

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