了解 React Native Perf Monitor [英] Understanding React Native Perf Monitor

问题描述

Perf Monitor 中的 JSC 是什么?它代表什么?另外，Perf Monitor 中的两个级别的视图是什么?

What is JSC in the Perf Monitor and what does it represent? Also, what are the two levels of Views in Perf Monitor?

推荐答案

JSC 列表示 JavaScriptCore 托管堆的大小——您的应用程序如何分配 JS 对象.

The JSC column represents the size of the JavaScriptCore managed heap -- how your app is allocating JS objects.

视图"列的两个级别用于显示屏幕上的视图，以及屏幕外或合并的视图.您想尝试使这些数字尽可能接近，以避免不必要的布局计算和处理.

The two levels of the Views column is for Views that are on-screen, versus views that are off-screen or merged. You want to try to get those numbers to be as close as possible to avoid unnecessary layout calculation and processing.

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