如果堆栈帧未处于活动状态，则此地址是在重新激活堆栈帧时要执行的下一条指令。
If the stack frame is not active, this address is the next instruction to execute when the stack frame is reactivated.
一般在分析启动性能时，我会收集所有激活包的列表以及对应于它们为何激活的堆栈跟踪信息。
Typically, when analyzing startup performance, I gather a list of all the activated bundles and stack traces for why they were activated.
查看堆栈跟踪以确定激活此MDA的线程。
Look at the stack trace for the thread that has activated this MDA.
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