New issue
Advanced search Search tips
Note: Color blocks (like █ or █) mean that a user may not be available. Tooltip shows the reason.

Issue 669868 link

Starred by 0 users
Status: WontFix
Owner:
alph@chromium.org
Closed: Dec 2016
Cc:
nyerramilli@chromium.org
█ msrchandra@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows
Pri: 1
Type: Bug-Regression



Sign in to add a comment

Regression:Blank page is displayed after switching between tabs.

Reported by jshan...@etouch.net, Nov 30 2016 
Chrome Version : 57.0.2936.0 Revision 325a49517707810d1abdfb0040e19b7abb5addbe-refs/heads/master@{#434845} 32/64 bit
OS:Windows (7,8,10)

What steps will reproduce the problem?
(1)Launch chrome and navigate to any 2 webpage for e.g. https://chrome.google.com/webstore/
(2)Press F12 to open devtools(dock down),click on 'timeline section' and set custom rate (456) under cpu throttling section
(3)Switch to previous tab and again navigate back observe.

Actual: Blank page is displayed after switching between tabs.

Expected: Blank page should not be displayed after switching between tabs.

This is a regression issue broken in 'M55' and below is manual regression range:
Good Build: 55.0.2883.0 
Bad Build: 55.0.2883.11 

Note: Issue not seen on Mac & Linux OS.
Actual_Result.mp4
1021 KB View Download

Comment 1 by jshan...@etouch.net, Nov 30 2016

Labels: hasbisect
Owner: alph@chromium.org
Status: Assigned (was: Unconfirmed)
CL:
https://chromium.googlesource.com/chromium/src/+log/55.0.2883.0..55.0.2883.11?pretty=fuller&n=10000
(Unable to narrow down the range via tool since getting same revision between this range)

Suspecting: 423768 ? 
Kindly help to re-assign, if your changes are not cause for this issue.

Comment 2 by alph@chromium.org, Nov 30 2016

Labels: Needs-Bisect
Looks legit to me. The page CPU is heavily throttled (456 times), so it takes time to repaint. It repaints on my MBP after several seconds.

Does it repaint for you after a while or remains blank forever, let's say for a minute?
What happens under other rates, e.g. 100x, 10x ?

Comment 3 by alph@chromium.org, Nov 30 2016

Labels: -Needs-Bisect Needs-Feedback

Comment 4 by jshan...@etouch.net, Dec 1 2016

Labels: -Needs-Feedback
With response to comment #2 
Rechecked again and below are the findings
1.With custom rate 456 it remains blank forever
2.With other rates like 100x & 10x, it works fine.

Comment 5 by alph@chromium.org, Dec 5 2016

Labels: OS-Linux
Status: WontFix (was: Assigned)
I still think it just takes too long to repaint the page. There's nothing magical in 456 constant. If under normal conditions it takes 1 sec to repaint the page then with the factor of 456 it should take approx 456 seconds.

Anyway we limited the slowdown factors to 20x in Canary. As for M55, M56 we can suggest people do not use extreme factors. Closing it as WAI.
►

Sign in to add a comment