Does anyone know a way to get rid of this flashing advertisement that has appeared in Chrome DevTools? It starts as below and then every 3 seconds or so it explodes into many coloured pieces.
For those of us on the Autistic spectrum or with sensory overload problems for any other reason, it is very distracting. Aargh!! This is completely blocking my work in DevTools at the moment.
Related
When opening dev tools, the device mode Icon is often not available.
In trying to determine why, it appears that it's use is now limited to a single tab in the browser. It used to work on as many as you liked.
It's extremely problematic,
as I often have several responsive pages that need comparison.
Anyone know why Google is limiting that function?
I used that an average of 8 hours a day for the past year and a half,
and suddenly it's unavailable for most of the tabs I have open.
does anyone have a work around?
I've been experiencing this for years, and it's happened across several computers. I click on a line to set a breakpoint in Chrome, and one of the following happens without about equal frequency:
Nothing happens.
There's a long delay, like 2-10 seconds, and then the breakpoint appears.
The breakpoint appears on a different line, with about a 50% chance of appearing on the correct line during execution.
The breakpoint is correctly set.
This has been driving me crazy for the longest time. I'd assumed it was just a bug, but I can't believe that such a commonly used feature would remain so buggy for such a long time, so I'm wondering if it's somehow me.
Does anyone else experience this and/or know how to fix it? It's seriously annoying.
Sometimes when I Inspect Element in Google Chrome I find that I have some large frames, but they are filled with white space. Anyone know what often causes such large amounts of empty space? I have seen timers cause issues with extending the frames length but in the example below I am unsure why a frame would be so large.
Would love some help minimizing these
This is documented here, see the 'About clear or light-gray frames' section. 'Clear frames' in question are described there as
Idle time between display refresh cycles.
According to this video, clear bar indicates browser waiting for a CPU or a GPU. There is nothing that developers can do to fix this when working on a 'standard' website.
I found some interesting relations and i hope it will save time for someone (I spent lot of time before figure out all of this)
Most important - chrome devtools cost a lot. A mean A LOT, even if it says nothing about it. For example:
"Screenshots" in performance monitor increases frametime from 16ms to 66ms in my case and just fills it with empty space in timeline - without screenshots and with screenshots. (Now i see long operations on GPU with screenshots, but there's no any info about what exactly particular operation did)
Things in "rendering" tools like "paint flashing" or "fps meter" greatly increase painting operations time. Just be sure that you disabled all of this before analyze performance!
Very strange things happens with "other" segment(Grey color on timeline). It suppose to be devtools cost itself, but sometimes it can randomly be around zero with lot of calculations or be on 100% wile idle. My advice - there's new "performance monitor" tool in new chrome versions (Not simple "performance"). It is better to toggle it on and keep an eye on "CPU usage" timeline. If you see unexpected behavior of gray curve just reload page or whole chrome - it may save lot of time for you.
Some extensions may cause random effects on timeline. It better to disable it too.
Actually any thing in tools or extensions may ruin your measuring. Toggle all of it off before start search out issues in you code, dom, or styles
i am currently trying to optimize a website. I frequently experience a long gap in the loading of the page, where nothing seems to happen.
So i figured, i use the google chrome devtools timeline tool to analyze, what's going on.
This is, what it shows to me:
As you can see, between 2.27s and 3.97s there is nothing. Now i ask myself, what happens during that time? Why doesn't the tool show me anything during that time? Are there processes, which are not covered by the devtools timeline?
My suspicion is, that a video tag might be initalized during that time, because i have a video tag on the page, but i am not 100% sure, if that's the cause.
Has anbody come across such a gap as well and knows what the issue was then?
I'm running a simple viewbox animation in raphael using requestAnimationFrame in chrome. I'm noticing all scripting and rendering tasks are completed yet I still see anywhere between 30 and 60ms of "dead space" where it looks like the browser is sitting there doing nothing. Any insight into this?
I went on this question looking for the same answer and as it seems nobody provided a response, here is what I found.
According to the Chrome DevTools documentation about the Clear and Light Grey Frame, the blank space is the time your browser was idle.
Why is it idle?
The short version is that a hollow frame means one of two things: your javascript main thread was busy doing other stuff that the Chrome Dev Team forgot to show in DevTools or you were bottlenecked on your GPU.
To tell the difference, you can enable "Timeline: Show CPU Activity on the Ruler" inside DevTools' settings (you know, the cog in the bottom right hand corner).
You will end with something like this:
See the little dark grey blocks on the "Records" row? Those are dark when the renderer thread was busy. If the renderer thread is mostly idle, e.g. no dark block, as is the case the screenshot I yanked for this post, it is a very good signal that you are GPU bound.
Here's the full explanation from Chrome Engineer Nat Duca.
https://plus.google.com/+NatDuca/posts/BvMgvdnBvaQ