Mozilla Firefox 69 Beta 10 发布 提供控制进程优先级的能力


JiangRen Mr

Mozilla Firefox 69 Beta 10 (Quantum)今日发布,从这一版本开始,Firefox提供了让Windows管理内容进程优先级的能力,这意味着正在处理的任务上花费的处理器时间更多,并且在后台花费更少的处理器时间(视频和音频播放除外)。

在运行Windows 10 May 2019更新或更新版本的系统上,新版通过Windows Hello添加了对Web Authentication HmacSecret扩展的支持。

苹果系统方面,为了提高双显卡macOS笔记本的电池寿命,Firefox现在可以更加积极地切换回适用于WebGL内容的更高能效的GPU。 Firefox也更加努力避免切换到高功率GPU。macOS上的Finder现在会显示文件下载时的下载进度。


Firefox 69.0 beta July 9, 2019

Version 69.0 beta, first offered to Beta channel users on July 9, 2019



  • Firefox now gives Windows hints to appropriately set content process priority levels, meaning more processor time spent on the tasks you're actively working on, and less processor time spent on things in the background (with the exception of video and audio playback).

  • To improve battery life on dual-graphics-card macOS machines, Firefox now tries more aggressively to switch back to the more power-efficient GPU for WebGL content when able. Firefox also works harder to avoid switching to the high-power GPU for one-off transient uses of WebGL.

  • Finder on macOS now displays download progress for files while they’re being downloaded.

  • Added support for the Web Authentication HmacSecret extension via Windows Hello on systems running the Windows 10 May 2019 update or newer.


  • As previously announced in the Plugin Roadmap for Firefox, the "Always Activate" option for Flash plugin content has been removed. Firefox will now always ask for user permission before activating Flash content on a website.

  • Firefox no longer loads userChrome.css or userContent.css by default. Users who wish to customize Firefox by using these files can set the  toolkit.legacyUserProfileCustomizations.stylesheets preference to true to restore this ability.


Developer Information

  • The new event listener breakpoint feature allows developers to pause on a host of different event types, whether it be related to animations, DOM, media, mouse, touch, worker, and many other event types.



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