https://en.wikipedia.org/wiki/List_of_mathematical_symbols
This page above has 100% cpu usage in Chrome/Chromium (one thread).
Can anybody duplicate the above?
Any web experts able to explain the above?
Seen on on two x86/AMD64 platforms that I tried. The first is Windows+Nvidia GPU Google-official Chrome and the second is Linux + AMD GPU + ubuntu-snap chromium.
This does not happen in Firefox on the Linux machine.
I cannot get the exact version information from windows at the moment but it is the 2004 (year 2020) build of Windows 10 Home 64bit and the latest version of Google Chrome.
The Linux version information is below.
Chromium:
Version 83.0.4103.116 (Official Build) snap (64-bit)
I am running a only two extensions: https everywhere, ublock origin.
Firefox (that does not have the problem):
78.0.2 (64-bit)
OS: Ubuntu 20.04 focal
Kernel: x86_64 Linux 5.4.0-40-generic
Uptime: 3d 20h 51m
Packages: 2785
Shell: bash 5.0.17
Resolution: 1920x1080
DE: KDE 5.68.0 / Plasma 5.18.5
WM: KWin
I have tried doing a performance recording, but I did not find the root cause.
https://developers.google.com/web/tools/chrome-devtools/evaluate-performance/reference
Related
First off, please let me know if this question is out of the scope of Stack Overflow, i've been looking online for answers and haven't found anything.
Today I found an extension called "Google Apps Training by Boost eLearning" that is being used within my Google Chrome web browser that states "your browser is being managed [my company name]". This extension also states that they have the following permissions:
"Read and change your data on all google.com sites, gat.boostelearning.com, and gatdev.appspot.com
Read and change your browsing history"
Per my company, they are saying this extension was never installed by them and furthermore the Macbook that this extension is installed on is my personal laptop.
My question is, can anyone point me in a direction on how to determine:
A.) When this extension was installed
B.) From what source it was installed
C.) The nature of the data that can be read by this extension
See below for MacBook/Chrome Specs
Macbook Specs:
Model Name: MacBook
Model Identifier: MacBook10,1
Processor Name: Dual-Core Intel Core m3
Processor Speed: 1.2 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Hyper-Threading Technology: Enabled
Memory: 8 GB
Boot ROM Version: 428.0.0.0.0
SMC Version (system): 2.42f13
Serial Number (system): C02WP15FHH21
Hardware UUID: B0CCBA78-60C3-5B97-9921-C3D984B879EE
OS:
Catalina version 10.15.6
Chrome:
Version 88.0.4324.182 (Official Build) (x86_64)
Thank you again for any help with this!
I will answer all your questions:
You can watch from the Google history all things you've done with Google products and if the account you're using is connected on other PC, you are able to see from where and when an extension was installed. By the privacy policy of any extensions that you find on the Chrome WebStore, you can easely discover what type of data the extension collect.
When trying to use ChromeDriver 2.31 in CentOS 7 I get the following error:
version 'GLIBC_2.18' not found
ChromeDriver developers confirm that glibc library dependency has been promoted to 2.18, while CentOS 7 has version 2.17.
Related links:
Announcing ChromeDriver 2.31
ChromeDriver Issue #1894
ChromeDriver Issue #1772
Is there a way to make it work without switching to another OS?
The Chromium developers are aware of the issue and working on a fix:
glibc dependency creeped up to 2.18 in M61, breaking EL7 support
During the switch to libc++, they accidentally referenced a new symbol from the glibc version in their sysroot, __cxa_thread_atexit_impl. But this was only introduce in glibc 2.18, and Red Hat Enterprise Linux 7 only has version 2.17. Apparently, for their use cases, libc++ works well enough without this symbol (similar to libstdc++ from GCC), so they just need to tweak their build not to use it, and Chromium (and thus Chrome Driver and Chrome unstable) should work again soon.
As an end user or even software developer who cannot rebuild the software in question (or maybe just does not want to invest such a non-trivial effort), there is little one can do about such glibc version dependencies. Therefore, it is pretty much a requirement that all builds happen against a build environment which matches the oldest operating system version one wants to support.
Dependency to GLIBC 2.18 have been removed in Chromedriver 2.32, so that version is safe to use on Centos 7.
Back to chromedriver 2.30 and it work with google-chrome-stable.x86_64 0:60.0.3112.113-1 on CentOS 7
Very offen I have graphic crash when I use developer tools in chrome (41.0.2272.118 (64-bit) ) ubuntu 14.04, Radeon HD 7520G AMD fglrx(proprietary drivers). When I refresh page, some little time bihevior normal, after I get problem again.
In firefox all is normal.
UPD
Using info from chrome://gpu and chrome://version
Both on Chrome version: 35.0.1916.153 (Official Build 274914) m
Both using an Nvidia 670 GTX
My driver: 9.18.13.3523
His driver: 9.18.13.4043
My webGL works perfectly, and my driver is slightly behind his. His webGL doesn't work even though in the settings it says all hardware accelerated, webGL enabled etc.
When he goes on page with webGL things they don't work - he can't see them just like you wouldn't see them with old browsers.
Why is this happening? How to diagnose/fix?
Most likely Google has blacklisted the graphics driver because of the bugs.
You need to find out how start Chrome so that it ignores GPU blacklist. On some system it is this command line:
google-chrome --enable-webgl --ignore-gpu-blacklist
... and if it still doesn't work, the relevant console output etc. is needed.
More about blacklist:
http://www.khronos.org/webgl/wiki/BlacklistsAndWhitelists
I'd like to test out the new SwiftShader-based software WebGL engine which is allegedly in Chrome 18. I'm running 18.0.1025.165 on Mac OS X 10.7.3. I tried this command line (suggested here), but when I visit something with WebGL, it just says that it is disabled:
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --blacklist-accelerated-compositing --blacklist-webgl
Is SwiftShader in the Mac version of Chrome 18? Is there a different trick I should use to enable it?
Currently SwiftShader is only available for Chrome under Windows. Is there any particular reason why you need it on Mac OS? Apple typically has adequate graphics hardware and OpenGL drivers.