2017-04-07 13:14:45 +03:00
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"use strict";
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2019-01-17 21:18:31 +03:00
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var session = ChromeUtils.import(
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"resource://gre/modules/TelemetrySession.jsm",
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null
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);
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2017-04-07 13:14:45 +03:00
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const DUMMY_PAGE_DATA_URI = `data:text/html,
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<html>
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<head>
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<meta charset="utf-8"/>
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<title>Dummy</title>
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</head>
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<body>
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<h1 id='header'>Just a regular everyday normal page.</h1>
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</body>
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</html>`;
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/**
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* Tests the MEMORY_DISTRIBUTION_AMONG_CONTENT probe by opening a few tabs, then triggering
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* the memory probes and waiting for the "gather-memory-telemetry-finished" notification.
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*/
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2017-06-22 13:51:42 +03:00
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add_task(async function test_memory_distribution() {
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2017-04-07 13:14:45 +03:00
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waitForExplicitFinish();
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if (SpecialPowers.getIntPref("dom.ipc.processCount", 1) < 2) {
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ok(true, "Skip this test if e10s-multi is disabled.");
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finish();
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return;
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}
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Services.telemetry.canRecordExtended = true;
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let histogram = Services.telemetry.getKeyedHistogramById(
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"MEMORY_DISTRIBUTION_AMONG_CONTENT"
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);
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histogram.clear();
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2017-06-22 13:51:42 +03:00
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let tab1 = await BrowserTestUtils.openNewForegroundTab(
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gBrowser,
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DUMMY_PAGE_DATA_URI
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);
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let tab2 = await BrowserTestUtils.openNewForegroundTab(
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gBrowser,
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DUMMY_PAGE_DATA_URI
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);
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let tab3 = await BrowserTestUtils.openNewForegroundTab(
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gBrowser,
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DUMMY_PAGE_DATA_URI
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);
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2017-04-07 13:14:45 +03:00
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let finishedGathering = new Promise(resolve => {
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2018-12-13 03:43:55 +03:00
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let obs = function() {
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2017-04-07 13:14:45 +03:00
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Services.obs.removeObserver(obs, "gather-memory-telemetry-finished");
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resolve();
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2018-12-13 03:43:55 +03:00
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};
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2017-04-07 13:14:45 +03:00
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Services.obs.addObserver(obs, "gather-memory-telemetry-finished");
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});
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session.TelemetrySession.getPayload();
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2017-06-22 13:51:42 +03:00
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await finishedGathering;
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2017-04-07 13:14:45 +03:00
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let s = histogram.snapshot();
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2018-12-13 03:43:55 +03:00
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ok("0 - 10 tabs" in s, "We should have some samples by now in this bucket.");
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2017-04-07 13:14:45 +03:00
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for (var key in s) {
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is(key, "0 - 10 tabs");
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let fewTabsSnapshot = s[key];
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ok(
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fewTabsSnapshot.sum > 0,
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"Zero difference between all the content processes is unlikely, what happened?"
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);
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ok(
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fewTabsSnapshot.sum < 80,
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"20 percentage difference on average is unlikely, what happened?"
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);
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2018-11-01 16:46:59 +03:00
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let values = fewTabsSnapshot.values;
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for (let [bucket, value] of Object.entries(values)) {
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if (bucket >= 10) {
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// If this check fails it means that one of the content processes uses at least 20% more or 20% less than the mean.
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is(value, 0, "All the buckets above 10 should be empty");
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}
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2017-04-07 13:14:45 +03:00
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}
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}
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histogram.clear();
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2018-03-19 05:16:45 +03:00
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BrowserTestUtils.removeTab(tab3);
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BrowserTestUtils.removeTab(tab2);
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BrowserTestUtils.removeTab(tab1);
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2017-04-07 13:14:45 +03:00
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finish();
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});
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