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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
| commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
| tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /dom/ipc/tests/browser_memory_distribution_telemetry.js | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/ipc/tests/browser_memory_distribution_telemetry.js')
| -rw-r--r-- | dom/ipc/tests/browser_memory_distribution_telemetry.js | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/dom/ipc/tests/browser_memory_distribution_telemetry.js b/dom/ipc/tests/browser_memory_distribution_telemetry.js new file mode 100644 index 0000000000..bec51fa1cd --- /dev/null +++ b/dom/ipc/tests/browser_memory_distribution_telemetry.js @@ -0,0 +1,92 @@ +"use strict"; + +var session = ChromeUtils.import( + "resource://gre/modules/TelemetrySession.jsm", + null +); + +const DUMMY_PAGE_DATA_URI = `data:text/html, + <html> + <head> + <meta charset="utf-8"/> + <title>Dummy</title> + </head> + <body> + <h1 id='header'>Just a regular everyday normal page.</h1> + </body> + </html>`; + +/** + * Tests the MEMORY_DISTRIBUTION_AMONG_CONTENT probe by opening a few tabs, then triggering + * the memory probes and waiting for the "gather-memory-telemetry-finished" notification. + */ +add_task(async function test_memory_distribution() { + waitForExplicitFinish(); + + if (SpecialPowers.getIntPref("dom.ipc.processCount", 1) < 2) { + ok(true, "Skip this test if e10s-multi is disabled."); + finish(); + return; + } + + Services.telemetry.canRecordExtended = true; + + let histogram = Services.telemetry.getKeyedHistogramById( + "MEMORY_DISTRIBUTION_AMONG_CONTENT" + ); + histogram.clear(); + + let tab1 = await BrowserTestUtils.openNewForegroundTab( + gBrowser, + DUMMY_PAGE_DATA_URI + ); + let tab2 = await BrowserTestUtils.openNewForegroundTab( + gBrowser, + DUMMY_PAGE_DATA_URI + ); + let tab3 = await BrowserTestUtils.openNewForegroundTab( + gBrowser, + DUMMY_PAGE_DATA_URI + ); + + let finishedGathering = new Promise(resolve => { + let obs = function() { + Services.obs.removeObserver(obs, "gather-memory-telemetry-finished"); + resolve(); + }; + Services.obs.addObserver(obs, "gather-memory-telemetry-finished"); + }); + + session.TelemetrySession.getPayload(); + + await finishedGathering; + + let s = histogram.snapshot(); + ok("0 - 10 tabs" in s, "We should have some samples by now in this bucket."); + for (var key in s) { + is(key, "0 - 10 tabs"); + let fewTabsSnapshot = s[key]; + ok( + fewTabsSnapshot.sum > 0, + "Zero difference between all the content processes is unlikely, what happened?" + ); + ok( + fewTabsSnapshot.sum < 80, + "20 percentage difference on average is unlikely, what happened?" + ); + let values = fewTabsSnapshot.values; + for (let [bucket, value] of Object.entries(values)) { + if (bucket >= 10) { + // If this check fails it means that one of the content processes uses at least 20% more or 20% less than the mean. + is(value, 0, "All the buckets above 10 should be empty"); + } + } + } + + histogram.clear(); + + BrowserTestUtils.removeTab(tab3); + BrowserTestUtils.removeTab(tab2); + BrowserTestUtils.removeTab(tab1); + finish(); +}); |