227948 2021-07-14 06:44:07 -0700 [Performance test][css-contain] Add test to contain: size layout 2021-07-25 06:01:07 -0700 1 1 1 Unclassified WebKit CSS WebKit Local Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 172026 1 cathiechen cathiechen cdumez ews-watchlist glenn jbedard jfernandez rbuis rego rniwa webkit-bug-importer oldest_to_newest 1776921 0 cathiechen 2021-07-14 06:44:07 -0700 To test the scenario to change the content of size and layout containment. 1777418 1 433649 cathiechen 2021-07-15 20:23:45 -0700 Created attachment 433649 Patch 1777419 2 433650 cathiechen 2021-07-15 20:33:03 -0700 Created attachment 433650 Patch 1777459 3 433650 rniwa 2021-07-16 00:53:06 -0700 Comment on attachment 433650 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=433650&action=review > PerformanceTests/CSS/css-contain/css-contain-change-text.html:1 > +<!DOCTYPE html> This should be under PerfomanceTests/Layout. > PerformanceTests/CSS/css-contain/css-contain-change-text.html:70 > + PerfTestRunner.measureTime({ Please use measureRunsPerSecond instead. > PerformanceTests/CSS/css-contain/css-contain-change-text.html:75 > + PerfTestRunner.forceLayout(); I don't think we need a helper function like this. Just call getBoundingClientRect() on some node manually instead. > PerformanceTests/resources/runner.js:62 > + doc = doc || document; > + if (doc.body) > + doc.body.offsetHeight; > + else if (doc.documentElement) > + doc.documentElement.offsetHeight; Are you copying this code from somewhere else? If so, you need to give the credit. 1777482 4 rego 2021-07-16 03:29:10 -0700 Do the performance bots in WebKit run with experimental flags enabled? If not I'm not sure if it's really useful to land perf tests for CSS Containment yet, as the bots are not going to notice any optimization based on that. WDYT? 1777487 5 433650 cathiechen 2021-07-16 03:53:12 -0700 Comment on attachment 433650 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=433650&action=review Hi Ryosuke, Thanks for the review! >> PerformanceTests/CSS/css-contain/css-contain-change-text.html:1 >> +<!DOCTYPE html> > > This should be under PerfomanceTests/Layout. Done. >> PerformanceTests/CSS/css-contain/css-contain-change-text.html:70 >> + PerfTestRunner.measureTime({ > > Please use measureRunsPerSecond instead. Done! >> PerformanceTests/CSS/css-contain/css-contain-change-text.html:75 >> + PerfTestRunner.forceLayout(); > > I don't think we need a helper function like this. Just call getBoundingClientRect() on some node manually instead. Done! >> PerformanceTests/resources/runner.js:62 >> + doc.documentElement.offsetHeight; > > Are you copying this code from somewhere else? If so, you need to give the credit. Yeah, I copy this and the test from Chromium. I'll explain it in changelog and cc the reviewers. 1777518 6 433680 cathiechen 2021-07-16 09:34:40 -0700 Created attachment 433680 Patch 1777522 7 cathiechen 2021-07-16 09:44:02 -0700 (In reply to Manuel Rego Casasnovas from comment #4) > Do the performance bots in WebKit run with experimental flags enabled? > > If not I'm not sure if it's really useful to land perf tests for CSS > Containment yet, as the bots are not going to notice any optimization based > on that. > > WDYT? Nope, the experimental flags are not enabled while I run it locally. Maybe there is a way to enable the experimental flag? 1778405 8 webkit-bug-importer 2021-07-21 06:45:16 -0700 <rdar://problem/80894989> 1779017 9 cathiechen 2021-07-23 02:33:41 -0700 The test result I ran locally with containment enabled and disable are: 14.87580277047857 runs/s to 6.369440777576201 runs/s Analyzed the profiler data. The performance improvement is related to the changes to objectIsRelayoutBoundary(), which makes layout containment as a relayout boundary. Then in FrameViewLayoutContext::layout, the layout could start from m_subtreeLayoutRoot instead of RenderView. Then in FrameView::didLayout, it reduces a lot of RenderLayer::updateLayerPositions. 1779163 10 433680 rniwa 2021-07-23 13:58:23 -0700 Comment on attachment 433680 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=433680&action=review > PerformanceTests/Layout/css-contain-change-size.html:28 > + let flexibleNodes = []; > + let NUM_ROWS = 10; > + let NUM_COLS = 10; These should all be const. Also, please call them rowCount & colCount. No need to capitalize them like this. > PerformanceTests/Layout/css-contain-change-size.html:31 > + let container = document.createElement('div'); const. > PerformanceTests/Layout/css-contain-change-size.html:36 > + let row = document.createElement('div'); const. > PerformanceTests/Layout/css-contain-change-size.html:40 > + let cell = document.createElement('div'); const. > PerformanceTests/Layout/css-contain-change-size.html:42 > + let flexibleNode = document.createElement('div'); const. > PerformanceTests/Layout/css-contain-change-size.html:43 > + flexibleNode.style.width = (100 * Math.random()).toFixed(0) + "px"; Let's use PerfTestRunner.random to make it clear this won't be truly random. > PerformanceTests/Layout/css-contain-change-size.html:66 > + for (let i = 0; i < flexibleNodes.length; i++) { Use for-of loop like this: for (const node of flexibleNodes) { > PerformanceTests/Layout/css-contain-change-size.html:67 > + flexibleNodes[i].style.width = (100 * Math.random()).toFixed(0) + 'px'; Ditto about using PerfTestRunner.random instead of Math.random. 1779288 11 433680 cathiechen 2021-07-23 19:45:03 -0700 Comment on attachment 433680 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=433680&action=review >> PerformanceTests/Layout/css-contain-change-size.html:28 >> + let NUM_COLS = 10; > > These should all be const. Also, please call them rowCount & colCount. > No need to capitalize them like this. I see... Done, thanks! >> PerformanceTests/Layout/css-contain-change-size.html:31 >> + let container = document.createElement('div'); > > const. Done. >> PerformanceTests/Layout/css-contain-change-size.html:36 >> + let row = document.createElement('div'); > > const. Done. >> PerformanceTests/Layout/css-contain-change-size.html:40 >> + let cell = document.createElement('div'); > > const. Done. >> PerformanceTests/Layout/css-contain-change-size.html:42 >> + let flexibleNode = document.createElement('div'); > > const. Done. >> PerformanceTests/Layout/css-contain-change-size.html:43 >> + flexibleNode.style.width = (100 * Math.random()).toFixed(0) + "px"; > > Let's use PerfTestRunner.random to make it clear this won't be truly random. Done! >> PerformanceTests/Layout/css-contain-change-size.html:66 >> + for (let i = 0; i < flexibleNodes.length; i++) { > > Use for-of loop like this: for (const node of flexibleNodes) { Done, thanks! >> PerformanceTests/Layout/css-contain-change-size.html:67 >> + flexibleNodes[i].style.width = (100 * Math.random()).toFixed(0) + 'px'; > > Ditto about using PerfTestRunner.random instead of Math.random. Done! 1779290 12 434157 cathiechen 2021-07-23 20:06:56 -0700 Created attachment 434157 Patch 1779305 13 434157 rniwa 2021-07-24 00:50:28 -0700 Comment on attachment 434157 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=434157&action=review > PerformanceTests/Layout/css-contain-change-size.html:26 > + let flexibleNodes = []; Since we're not assigning a new value to this variable, this should also be const. JavaScript const semantics ins't like that of C++. It doesn't mean that the object referenced by the variable isn't mutable. So even if we declared this const variable, we can still push more contents to the array. Also, we should call this widthChangingElements or resizingElements. "flexibleNodes" seems rather vague. > PerformanceTests/Layout/css-contain-change-size.html:38 > + row.style.top = top + "px"; We should probably use single quotation marks throughout the script for consistency. > PerformanceTests/Layout/css-contain-change-size.html:44 > + flexibleNode.style.width = (100 * PerfTestRunner.random()).toFixed(0) + "px"; > + flexibleNode.style.height = "100px"; Ditto. > PerformanceTests/Layout/css-contain-change-size.html:46 > + cell.style.left = left + "px"; Ditto. > PerformanceTests/Layout/css-contain-change-size.html:63 > + description: "Measures performance of changing widths of nodes.", Ditto. 1779349 14 434157 cathiechen 2021-07-24 19:47:13 -0700 Comment on attachment 434157 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=434157&action=review >> PerformanceTests/Layout/css-contain-change-size.html:26 >> + let flexibleNodes = []; > > Since we're not assigning a new value to this variable, this should also be const. > JavaScript const semantics ins't like that of C++. > It doesn't mean that the object referenced by the variable isn't mutable. > So even if we declared this const variable, we can still push more contents to the array. > Also, we should call this widthChangingElements or resizingElements. "flexibleNodes" seems rather vague. Done! Thanks for the explanation! >> PerformanceTests/Layout/css-contain-change-size.html:38 >> + row.style.top = top + "px"; > > We should probably use single quotation marks throughout the script for consistency. Done, thanks! >> PerformanceTests/Layout/css-contain-change-size.html:44 >> + flexibleNode.style.height = "100px"; > > Ditto. Done. >> PerformanceTests/Layout/css-contain-change-size.html:46 >> + cell.style.left = left + "px"; > > Ditto. Done. >> PerformanceTests/Layout/css-contain-change-size.html:63 >> + description: "Measures performance of changing widths of nodes.", > > Ditto. Done. 1779351 15 434177 cathiechen 2021-07-24 19:50:07 -0700 Created attachment 434177 Patch 1779362 16 ews-feeder 2021-07-25 06:01:05 -0700 Committed r280286 (239944@main): <https://commits.webkit.org/239944@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 434177. 433649 2021-07-15 20:23:45 -0700 2021-07-15 20:32:57 -0700 Patch bug-227948-20210716112343.patch text/plain 5991 cathiechen U3VidmVyc2lvbiBSZXZpc2lvbjogMjc5MTEwCmRpZmYgLS1naXQgYS9Ub29scy9DaGFuZ2VMb2cg Yi9Ub29scy9DaGFuZ2VMb2cKaW5kZXggYzA2YmIxMjY1OTk0MjM0NzY5Y2JiYmZjODM1NGQ1NWM3 YTk1YjY3MC4uZGZmM2Y1NDg4YWY1ZWJjNWQ1OTEzNTljMWQzYjhiM2Q4OTllMTM3MSAxMDA2NDQK LS0tIGEvVG9vbHMvQ2hhbmdlTG9nCisrKyBiL1Rvb2xzL0NoYW5nZUxvZwpAQCAtMSwzICsxLDE1 IEBACisyMDIxLTA3LTE0ICBDYXRoaWUgQ2hlbiAgPGNhdGhpZWNoZW5AaWdhbGlhLmNvbT4KKwor ICAgICAgICBbUGVyZm9ybWFuY2UgdGVzdF1bY3NzLWNvbnRhaW5dIEFkZCB0ZXN0IHRvIGNvbnRh aW46IHNpemUgbGF5b3V0CisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVn LmNnaT9pZD0yMjc5NDgKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKwor ICAgICAgICBXaGVuIHRoZSBvdXRwdXQgdGV4dCBtaWdodCBjb250YWluIEpTJ3Mgb3V0cHV0LCBp dCBtaWdodCBub3QgbWF0Y2ggX21ldHJpY3NfcmVnZXgsIGJ1dCBpdCdzIG5vdCBhbiBlcnJvci4K 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