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Ftrace function graph原理及性能瓶颈的分析
由于android开发的需要与systrace的普及,现在大家在进行性能与功耗分析时候,经常会用到systrace跟pefetto. 而systrace就是基于内核的event tracing来实现的。以如下的一段pefetto为例。可以看到tid=1845的线程,在被唤醒到CPU5上之后,在runnable状态上维持了503us才开始运行 ...
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