>adb shell top -h Usage: top [ -m max_procs ] [ -n iterations ] [ -d delay ] [ -s sort_column ] [-t ] [ -h ] -m num Maximum number of processes to display. 最多显示多少个进程 -n num Updates to show before exiting. 刷新次数 -d num Seconds to wait between updates. 刷新间隔时间（默认5秒） -s col Column to sort by (cpuvssrssthr). 按哪列排序 -t Show threads instead of processes. 显示线程信息而不是进程 -h Display this help screen. 显示帮助文档
