third_party/WebKit/PerformanceTests/Paint/large-table-collapsed-border-change.html - Issue 2429623004: Add performance tests for full frame cycle

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Side by Side Diff: third_party/WebKit/PerformanceTests/Paint/large-table-collapsed-border-change.html

Issue 2429623004: Add performance tests for full frame cycle (Closed)

Patch Set: No random Created 4 years, 2 months ago

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	1 <!DOCTYPE html>

	2 <script src="../resources/runner.js"></script>

	3 <pre id="log"></pre>

	4 <style>td { border: 1px solid blue }</style>

	5 <script>

	6 function createTable(rows, columns) {

	7 var table = document.createElement("TABLE");

	8 // Collapsing border is not necessary to see the slowness

	9 // but it makes the painting phase ~2x slower.

	10 table.style.borderCollapse = "collapse";

	11 for (var i = 0; i < rows; ++i) {

	12 var tr = document.createElement("TR");

	13 for (var j = 0; j < columns; ++j) {

	14 var td = document.createElement("TD");

	15 tr.appendChild(td);

	16 }

	17 table.appendChild(tr);

	18 }

	19 return table;

	20 }

	21

	22 var table = createTable(300, 320);

	23 document.body.insertBefore(table, log);

	24

	25 var ix = 30;

	26 var iy = 30;

	27

	28 PerfTestRunner.measureFrameTime({

	29 run: function() {

	30 table.childNodes[iy].childNodes[ix].style.borderColor = "red";

	31 ix++;

	32 iy++;

	33 },

	34 warmUpCount: 5,

	35 });

	36 </script>

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