Top 10 improvements in the last 7 days for Chromium Perf Sheriff

Delta	Revision Range	Bot	Test Suite	Test
47.0%	1019144-1019174	win-10-perf	blink_perf.layout	auto-grid-lots-of-data/auto-grid-lots-of-data.html
46.4%	1019156-1019177	linux-perf	blink_perf.layout	auto-grid-lots-of-data/auto-grid-lots-of-data.html
44.0%	1019156-1019177	linux-perf	blink_perf.css	ChangeStyleShallowTree/ChangeStyleShallowTree.html
43.9%	1019144-1019174	win-10-perf	blink_perf.layout	auto-grid-lots-of-spanning-data/auto-grid-lots-of-spanning-data.html
43.8%	1019144-1019174	win-10-perf	blink_perf.css	ChangeStyleShallowTree/ChangeStyleShallowTree.html
41.7%	1019156-1019177	linux-perf	blink_perf.layout	auto-grid-lots-of-spanning-data/auto-grid-lots-of-spanning-data.html
37.6%	1020064-1020074	linux-perf	blink_perf.bindings	gc-tree/gc-tree.html
37.5%	1017690-1017735	linux-perf	rendering.desktop	Graphics.Smoothness.PercentDroppedFrames2.AllSequences/repaint_facebook_2018
34.8%	1020349-1020357	win-10-perf	blink_perf.layout	hittest-block-children/hittest-block-children.html
25.4%	1018132-1018138	linux-perf	system_health.common_desktop	largestContentfulPaint/load_media/load_media_facebook_photos_2018

Top 10 regressions in the last 7 days for Chromium Perf Sheriff

Delta	Revision Range	Bot	Test Suite	Test	Bug
73.1%	1020349-1020351	linux-perf	blink_perf.paint	LocalFrameView::RunPrePaintLifecyclePhase/custom-highlights.html	1341509
61.5%	1020350-1020351	linux-perf	blink_perf.bindings	gc-tree/gc-tree.html	1341478
35.2%	1020004-1020025	linux-perf	system_health.common_desktop	largestContentfulPaint/load_media/load_media_facebook_photos_2018	1341329
30.4%	1020349-1020357	win-10-perf	blink_perf.shadow_dom	v1-mutate-shallow-tree-then-slot-assigned-nodes/v1-mutate-shallow-tree-then-slot-assigned-nodes.html	1341482
24.2%	1020349-1020351	linux-perf	blink_perf.shadow_dom	shadow-dom-overhead-iframe/shadow-dom-overhead-iframe.html	1341482
23.2%	1020337-1020351	win-10-perf	blink_perf.shadow_dom	shadow-dom-overhead-iframe/shadow-dom-overhead-iframe.html	1341482
20.4%	1020345-1020351	win-10-perf	blink_perf.events	EventsDispatching/EventsDispatching.html	1341483
19.4%	1020350-1020351	linux-perf	blink_perf.css	ClassInvalidation/ClassInvalidation.html	1341479
18.4%	1020350-1020356	linux-perf	blink_perf.bindings	append-child/append-child.html	1341478
17.4%	1019637-1019655	linux-perf	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:malloc:effective_size_avg/load_media/load_media_facebook_photos_2018	1341080