1642276 - Slow frames, CPU heating up on Google Pixelbook Go product page on Google Store

Status: NEW

(Core :: Graphics: WebRender, defect)

Description

[Asif Youssuff]

Seeing the red animation after enabling gfx.webrender.debug.slow-frame-indicator on https://store.google.com/us/product/pixelbook_go

Profile: https://share.firefox.dev/2XMQp3A

Profile is me scrolling all the way down the page using touchpad.

Slow Frame #01 Frame 156(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 1827 - Transaction start 11.459014, main-thread time 99.476850, full paint time 208.411094, Skipped composites 0, Composite start 242.557497, Resource upload time 13.101373, GPU cache upload time 0.289169, Render time 34.833641, Composite time 61.783392
Slow Frame #02 Frame 160(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 1509 - Transaction start 5.521032, main-thread time 94.302533, full paint time 153.631882, Skipped composites 0, Composite start 200.572053, Resource upload time 28.852455, GPU cache upload time 1.189817, Render time 37.609782, Composite time 50.696237
Slow Frame #03 Frame 89(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 1361 - Transaction start 119.481641, main-thread time 63.423832, full paint time 64.169060, Skipped composites 0, Composite start 186.667941, Resource upload time 15.120713, GPU cache upload time 0.217612, Render time 25.508561, Composite time 27.010218
Slow Frame #04 Frame 9(https://profiler.firefox.com/from-addon/calltree/?globalTrackOrder=6-7-8-0-1-2-3-4-5&hiddenGlobalTracks=1-2-3-4&localTrackOrderByPid=610962-2-3-0-1~611032-0~611204-0~611132-0~611105-0~611057-0-1~&thread=7&v=4) CONTENT_FRAME_TIME 1302 - Transaction start 170.914139, main-thread time 10.199938, full paint time 11.426762, Skipped composites 0, Composite start 187.993525, Resource upload time 0.000000, GPU cache upload time 0.000000, Render time 0.045678, Composite time 0.606854
Slow Frame #05 Frame 68(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 1283 - Transaction start 14.570031, main-thread time 102.864283, full paint time 116.607243, Skipped composites 0, Composite start 146.524712, Resource upload time 37.158915, GPU cache upload time 0.183646, Render time 44.068731, Composite time 52.122140
Slow Frame #06 Frame 157(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 1227 - Transaction start 22.269403, main-thread time 65.624756, full paint time 101.216607, Skipped composites 0, Composite start 135.476202, Resource upload time 2.829171, GPU cache upload time 0.000545, Render time 33.308809, Composite time 68.586898
Slow Frame #07 Frame 159(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 1144 - Transaction start 21.714121, main-thread time 11.063475, full paint time 21.308450, Skipped composites 0, Composite start 77.032029, Resource upload time 36.174103, GPU cache upload time 0.448653, Render time 82.563015, Composite time 110.130662
Slow Frame #08 Frame 125(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 1109 - Transaction start 102.098659, main-thread time 12.490696, full paint time 19.448072, Skipped composites 0, Composite start 133.483624, Resource upload time 3.442901, GPU cache upload time 0.158063, Render time 42.722682, Composite time 49.970919
Slow Frame #09 Frame 13(https://profiler.firefox.com/from-addon/calltree/?globalTrackOrder=6-7-8-0-1-2-3-4-5&hiddenGlobalTracks=1-2-3-4&localTrackOrderByPid=610962-2-3-0-1~611032-0~611204-0~611132-0~611105-0~611057-0-1~&thread=7&v=4) CONTENT_FRAME_TIME 1008 - Transaction start 0.000000, main-thread time 7.540448, full paint time 8.654101, Skipped composites 0, Composite start 10.333482, Resource upload time 0.000000, GPU cache upload time 0.000000, Render time 0.033911, Composite time 0.837715
Slow Frame #10 Frame 121(https://store.google.com/us/product/pixelbook_go) CONTENT_FRAME_TIME 957 - Transaction start 54.602340, main-thread time 33.486592, full paint time 38.004052, Skipped composites 0, Composite start 103.443279, Resource upload time 3.329131, GPU cache upload time 0.128207, Render time 42.385643, Composite time 55.703264

Comment 1

[Mayank Bansal]

Win10x64 profile : https://share.firefox.dev/2MeXDIj

Comment 2

[Asif Youssuff]

Profile without screenshots: https://share.firefox.dev/2BkvjSt

Comment 3

[Markus Stange [:mstange]]

The page is running some WebGL, and we synchronously decode images during texture upload. I think the slow frames are caused by the page.
Does Chrome have less CPU usage on this page?

Comment 4

[Asif Youssuff]

Hard to tell CPU use on multi-core machines but Chromium appears to take less CPU. It isn't great in any case and I agree that the page is bad.

Comment 5

[Nicolas Silva [:nical]]

GPU times look OK now, however I see a lot of jank during the animation with the black laptop opening up. It looks like the renderer is spending a lot of time uploading textures.

Comment 6

[Nicolas Silva [:nical]]

GPU times look OK now, however I see a lot of jank during the animation with the black laptop opening up. It looks like the renderer is spending a lot of time uploading textures.