Gecko 115 に向けての変更点確認

[dynamis]

102 迄の変更点確認に続けて次の ESR である Firefox 115 までの変更点を確認・メモする。

アーキテクチャ変更などの解説記事

• GFX Team Blog は更新されなくなってしまった。
• Hacks Blog にも Linux Firefox の更新点に関する記述はない。

102 移行の設計変更に関する分かり易いまとめ記事が見当たらない。見つかり次第追記する。

Releasenotes

• 103 https://www.mozilla.org/en-US/firefox/103.0/releasenotes/
  • Improved performance on high-refresh rate monitors (120Hz+)
  • Fixed WebGL performance issues on NVIDIA binary drivers via DMA-Buf on Linux.
    • NVIDIA の場合に限るのか他にも影響があり得るのか。
• 104 https://www.mozilla.org/en-US/firefox/104.0/releasenotes/
• 105 https://www.mozilla.org/en-US/firefox/105.0/releasenotes/
  • Firefox is now compliant with the User Timing L3 specification, which adds additional optional arguments to the performance.mark and performance.measure methods to provide custom start times, end times, duration, and attached details.
  • Searching in large lists for individual items is now 2x faster. This performance enhancement replaces array.includes and array.indexOf with an optimized SIMD version.
  • Firefox is less likely to run out of memory on Linux and performs more efficiently for the rest of the system when memory runs low.
    • 効果の詳細は不明だがメモリ制約のある場合も多い組込で重要な変更
• 106 https://www.mozilla.org/en-US/firefox/106.0/releasenotes/
  • Swipe-to-navigate (two fingers on a touchpad swiped left or right to perform history back or forward) now works for Linux users on Wayland.
• 107 https://www.mozilla.org/en-US/firefox/107.0/releasenotes/
  • Power profiling — visualizing performance data recorded from web browsers — is now also supported on Linux and Mac with Intel CPUs, in addition to Windows 11 and Apple Silicon.
• 108 https://www.mozilla.org/en-US/firefox/108.0/releasenotes/
  • The shift+esc keyboard shortcut now opens the Process Manager, offering a way to quickly identify processes that are using too many resources.
  • Improved frame scheduling when under load; this substantially improves Firefox’s MotionMark scores.
    • 組込の性能制約がある場合 = 負荷が高い場合というのは多いので、フレームスケジューリングの改善が有効に働く場合がありそう
• 109 https://www.mozilla.org/en-US/firefox/109.0/releasenotes/
• 110 https://www.mozilla.org/en-US/firefox/110.0/releasenotes/
  • Date, time, and datetime-local input fields can now be cleared with Cmd+Backspace and Cmd+Delete shortcut on macOS and Ctrl+Backspace and Ctrl+Delete on Windows and Linux.
  • GPU-accelerated Canvas2D is enabled by default on macOS and Linux.
  • WebGL performance improvement on Windows, MacOS and Linux.
• 111 https://www.mozilla.org/en-US/firefox/111.0/releasenotes/
• 112 https://www.mozilla.org/en-US/firefox/112.0/releasenotes/
  • Ubuntu Linux users can now import their browser data from the Chromium Snap package. Currently, this will only work if Firefox is not also installed as a Snap package, but work is underway to address this!
• 113 https://www.mozilla.org/en-US/firefox/113.0/releasenotes/
  • Firefox 113 now supports AV1 Image Format files containing animations (AVIS), improving support for AVIF images across the web.
• 114 https://www.mozilla.org/en-US/firefox/114.0/releasenotes/
  • Users on macOS, Linux, and Windows 7 can now use FIDO2 / WebAuthn authenticators over USB. Some advanced features, such as fully passwordless logins, require a PIN to be set on the authenticator.
• 115 https://www.mozilla.org/en-US/firefox/115.0/releasenotes/
  • Hardware video decoding enabled for Intel GPUs on Linux.
  • On Linux, middle clicks on the new tab button will now open the xclipboard contents in the new tab. If the xclipboard content is a URL then that URL is opened, any other text is opened with your default search provider. This feature can be turned off using browser.tabs.searchclipboardfor.middleclick in about:config.

102 に続けて結構 Linux の GPU/WebGL 周りの改善が多く入っているので影響に要注目

[dynamis]

Martin が久々に開発進捗をまとめるブログを書いてくれた:
https://mastransky.wordpress.com/2023/07/07/firefox-on-linux-update/

RasPi などの SoC 向けだがビデオデコード周りの動きは参考になるかも知れない:

VA-API was enabled for Intel GPU on Firefox 115.0. AMD is delayed due to various driver bugs but you can force enable it by setting media.hardware-video-decoding.force-enabled at about:config. VA-API state is printed at about:support page now.
David Turner implemented video hardware decoding support for H.264 on a Raspberry Pi 4 via V4L2-M2M and there’s ongoing work to enable VP8/9 too. If you have an arm with HW video decoding, try it in next Firefox 116.0 (or recent Beta).

X11 依存を無くす話、115 には間に合わなかったまたはリスク回避のため入れなかったのだと思うが 116 には入ったとのこと。

Firefox 116 allows you to create Wayland or X11 exclusive builds. It means you can build Firefox without X11 (or Wayland) dependency which saves space and resources. Also you don’t need anymore Wayland build to run DMABuf and VA-API backends.

Wayland 向けのテスト。

Mozilla started to implement Firefox tests on Wayland (along with testsuite migration to Ubuntu 22.04). It allows to ship Wayland backend by default with Mozilla binaries and Ubuntu/Snap and reduces regressions during development.

PGO によるパフォーマンスを高めたビルドを Fedora も提供し始めたらしい。具体的に何が問題で出来なかったのがどう変わったのかリンクがないので分からないが気になる所。

Fedora ships Firefox 115.0 with PGO/LTO optimization again (built by GCC) after long period of breakage. Mozilla/clang builds are still a bit faster than GCC ones (Mozilla binaries give me ~ 200 points in Speedometer2.1 while Fedora ones ~ 190 points) but GCC binaries are slightly smaller (130 MB vs. 150 MB).