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

Issue 645154 link

Starred by 1 user
Status: WontFix
Owner: ----
Closed: Nov 2016
Cc:
█ nduca@chromium.org
█ aiolos@chromium.org
EstimatedDays: ----
NextAction: ----
OS: Chrome , Mac
Pri: 2
Type: Bug



Sign in to add a comment

Trace shows no information

Project Member Reported by komoroske@chromium.org, Sep 8 2016 
Version: 	52.0.2743.116 (Official Build) (64-bit)
OS: ChromeOS

What steps will reproduce the problem?
(1) Record a trace
(2) Look at the trace results
(3)

What is the expected output?
You see all of the information

What do you see instead?
Where the bars of color would show up is just white.  (See screenshot)

I've also noticed this for the past 2 months or so on my personal Mac Book Pro, but haven't ever filed a bug for it.


Please use labels and text to provide additional information.
Screenshot 2016-09-08 at 10.44.19 AM.png
162 KB View Download

Comment 1 by komoroske@chromium.org, Nov 26 2016

Cc: nduca@chromium.org
Components: Internals>Tracing
Labels: -Pri-3 OS-Chrome OS-Mac Pri-2
I also see this on my MacBook Pro (and have for multiple versions).

It makes filing performance bugs very difficult. I wonder what's causing it??

Comment 2 by komoroske@chromium.org, Nov 29 2016 

I've found that on the Pixel this works if I only check a small number of categories to include in the trace. Note also that I have ~40-50 tabs open.

I guess that means that the trace is just too big?

Comment 3 by nduca@chromium.org, Nov 29 2016

Cc: aiolos@chromium.org
Status: WontFix (was: Untriaged)
Ah, this is https://github.com/catapult-project/catapult/issues/2416 ... its kind of as you describe, the trace isn't too big chrome's html5 canvas implementation has a 32k pixel size limit, and the height of your trace in the UI is greater than that. chrome, faced with this, just drops all the pixels. The workaround for now is to collapse various processes by clicking their process name. It is super mechanical and slow though.

Gonna close this bug, though you're welcome to follow that linked issue. Someday I hope we could fix it but its commmons code...
►

Sign in to add a comment