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iOS 性能优化总结
source link: https://juejin.im/post/5ace078cf265da23994ee493
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卡顿产生的原因 在 VSync 信号到来后，系统图形服务会通过 CADisplayLink 等机制通知 App，App 主线程开始在 CPU 中计算显示内容，比如视图的创建、布局计算、图片解码、文本绘制等。随后 CPU 会将计算好的内容提交到 GPU 去，由
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