WebKit
profiler
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WebKit | profiler | |
---|---|---|
151 | 184 | |
7,438 | 1,103 | |
2.8% | 2.3% | |
10.0 | 9.6 | |
4 days ago | 1 day ago | |
JavaScript | ||
- | Mozilla Public License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
WebKit
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GPU Compute in the Browser at the Speed of Native: WebGPU Marching Cubes
Multiple engineers are working on adding it back: https://github.com/WebKit/WebKit/pulls?q=is%3Apr+is%3Aclosed...
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HTML Streaming and DOM Diffing Algorithm
Since 2023 Chrome announced the View Transition API, and it looks like Safari is also going to support it soon.
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Towards memory safety with ownership checks for C
One heap per type.
Here’s an allocator optimized for that use case.
https://github.com/WebKit/WebKit/blob/main/Source/bmalloc/li...
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Bun, JavaScript, and TCO
To use this in Bun, you’d have to start Bun with the environment variable “BUN_JSC_useDollarVM=1” and then $vm.createBuiltin(mySourceCodeString)
When using this intrinsic, if any of the arguments are incorrect or it cannot otherwise enable it, the entire process will probably crash. In debug builds of JSC it will have a nicer assertion failure but that is not enabled in release builds
Example code: https://github.com/WebKit/WebKit/blob/17351231b4dedb62d81721...
also happy to answer any questions about Bun
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Show HN: Rem: Remember Everything (open source)
Ah, good, let me introduce you to the wonderful world of the Chrome Devtools Protocol! (fka Chrome Remote Debugging Protocol)
I love this API for almost everything browser related. I built my RBI product atop this (BrowserBox: https://dosyago.com), and I think it's a drastically underrated API.
Also, it works out of the box in Edge, Brave, Chromium, and many parts of CRDP are supported by Firefox and Safari^1
1: See for example: https://github.com/WebKit/webkit/tree/main/Source/JavaScript...
- WebGPU now available for testing in Safari Technology Preview
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Disabling iOS Personalized Ads tells kernel to kill daemon every 3 seconds
No, it's unrelated.
https://github.com/WebKit/WebKit/commit/064df1a9f395f8c6e32c...
- Apple's Safari browser is still vulnerable to Spectre attacks
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Replacing WebRTC: real-time latency with WebTransport and WebCodecs
It's being worked on now: https://github.com/WebKit/WebKit/pull/17320
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iLeakage: Browser-Based Timerless Speculative Execution Attacks on Apple Devices
It is different. The cross-site navigation flag is a couple of years old. It was enabled by default for iOS in November 2018 for example https://github.com/WebKit/WebKit/commit/e191fc8c412850cb9fd0...
profiler
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Long running tab (kiosk), 100% CPU
Probably your best bet is to use the Firefox Profiler once it starts hogging the CPU to try to see what it's doing. I'd be happy to take a look at the result although I don't have a lot of experience at diagnosing performance problems; hopefully the profile will make it obvious what's going on.
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Slow Firefox Startup
I tried using the https://profiler.firefox.com/ and running with:
- Firefox Profiler
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Definite tab bug affecting both Win/Linux intermittently
You can try to reproduce while taking a profile using the Firefox profiler, then share it in the #perf:mozilla.org room on Mozilla's Matrix instance.
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Why does Firefox run slow
Run a profiling session for ~30 sec when you notice something is running slower than you expect, see https://profiler.firefox.com/. Share results here if you want help interpreting them.
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Problems with Firefox non snap versions on Ubuntu 22.04?
Next time, send a SIGABRT to the main process (kill -6 $(pidof firefox)) and use the resulting backtrace (you will find a link to the crash report in about:crashes) to file a bug. A performance profile could be useful, but you'll need to know first what to capture. This seems like a graphics issue, so try the Graphics preset. Share a link to your report.
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Dear Firefox, why are you so terrible at rendering Flutter web apps? It's like potato quality.
https://profiler.firefox.com will be useful if you can capture and share it to developers.
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Webpages not loading or taking forever to load
If you can reproduce it in safe mode and a clean profile, capture a performance profile using the clean profile while trying to load a problematic webpage, don't remove any information from it, and share it here (although it's typically not easy for users to analyse them), or file a bug with it attached.
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Firefox hangs on Facebook page
Next time, capture a performance profile using the Graphics preset, and kill the browser by entering kill -6 $(pidof firefox) in a shell. This will create a bug report (unless debian disables the crash reporter) that would indicate where Firefox is stuck at. You might need to use an official build to get useful results.
- AV1 Lagging Like Mad
What are some alternatives?
chromium - The official GitHub mirror of the Chromium source
xkeysnail - Yet another keyboard remapping tool for X environment
otter-browser - Otter Browser aims to recreate the best aspects of the classic Opera (12.x) UI using Qt5
old-reddit-redirect - Ensure Reddit always loads the old design
cname-trackers - This repository contains a list of popular CNAME trackers
rust-threadpool - A very simple thread pool for parallel task execution
fingerprintjs - Browser fingerprinting library. Accuracy of this version is 40-60%, accuracy of the commercial Fingerprint Identification is 99.5%. V4 of this library is BSL licensed.
OpenH264 - Open Source H.264 Codec
gecko-dev - Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org. How to contribute: https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html
wolvic - A fast and secure browser for standalone virtual-reality and augmented-reality headsets.
uBlock-Safari - uBlock Origin - An efficient blocker for Chromium, Firefox, and Safari. Fast and lean.
heaptrack - A heap memory profiler for Linux