通过systrace分析性能问题

https://wiki.mozilla.org/FirefoxOS/Performance/Profiling

• 打开 systrace, 开启MOZ_USE_SYSTRACE

gecko/tools/profiler/GeckoProfilerImpl.h
#define MOZ_USE_SYSTRACE true

• 抓trace命令,抓取10S，默认5S

systrace工具在android/sdk/platform-tools下面
./systrace.py sched freq idle am wm gfx view sync binder_driver irq workq input -b 96000 

• Load trace

使用Chrome->chrome://tracing/，在这里load mynewtrace.html.