App
Camera 打开慢要区分 API 返回、HAL 首个 Buffer 和预览画面体现；Audio underrun 要看 App 写入与 mixer 周期是否稳定。这些事件分散在 App、系统服务、HAL 和调度轨道里，单列一张 Top s...
平台 Trace 能体现线程、CPU、帧和 Binder 等系统事件；播放器的 frame id、作品 scene 名称或业务队列里的等待时段，需要软件自己提供。缺少这些标记时，一段主线程耗时只能定位到系统活动，难以对应业务阶段。Perfe...
FrameTimeline 标出一帧晚了，主线程和 RenderThread 没有明显长任务，下一步可以查 GPU 工作与 fence。GPU 频率、电池电流和电源轨只能提供同一窗口的硬件状态，不能单独证明某个 App 帧为何晚呈现。这篇把...
这篇文章只做一件事：把我长期维护、正在推进、已经公开和暂未公开的项目集中到一个地方。范围包括 Android 性能分析、Perfetto 工具、AI 自动化、iOS App、Android Demo、测试套件、博客系列、社群和各个平台账号。...
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