The android port of trace-cmd tool. Contribute to pniemine/trace-cmd development by creating an account on GitHub.
trace-cmd record开始记录,ctrl+c停止记录并保存到trace.dat中。 还可以通过trace-cmd reset对各种设置进行复位,然后trace-cmd start进行录制,trace-cmd stop停止录制,trace-cmd extract将数据保存到trace.dat中。 2.2 trace-cmd record trace-cmd record用于录制ftrace信息,通过如下选项可以指定只跟踪特定traceevents,或...
trace-cmd record [OPTIONS] [command] DESCRIPTIONThe trace-cmd(1) record command will set up the Ftrace Linux kernel tracer to record the specified plugins or events that happen while the command executes. If no command is given, then it will record until the user hits Ctrl-C. ...
trace-cmd record [OPTIONS] [command] DESCRIPTION The trace-cmd(1) record command will set up the Ftrace Linux kernel tracer to record the specified plugins or events that happen while the command executes. If no command is given, then it will record until the user hits Ctrl-C. The recor...
trace-cmd record用于录制ftrace信息,通过如下选项可以指定只跟踪特定traceevents,或者跟踪特定pid、或者跟踪特定funtion/function_graph函数。 还可以设置cpumask、ringbuffer大小等等。 usage: trace-cmd record [-v][-e event [-f filter]][-p plugin][-F][-d][-D][-o file] \ ...
比如:trace-cmd record -p function -l 'dev*' -n dev_attr_show 设置跟踪所有 dev 开头的函数,但是不跟踪dev_attr_show -g set graph function:指定 function_graph tracer 跟踪的 函数,类似echo function_name > set_graph_function -O option to enable (or disable):设置 options,比如设置options/func...
print-parent nosym-offset nosym-addr noverbose noraw nohex nobin noblock trace_printk annotate nouserstacktrace nosym-userobj noprintk-msg-only context-info nolatency-format record-cmd norecord-tgid overwrite nodisable_on_free irq-info markers noevent-fork function-trace nofunction-fork nodisplay...
然后就想到是不是系统中某个进程搞的鬼,不让cpu睡眠到c7s. 这时候使用trace event监控一下系统中sched_switch事件. 使用trace-cmd工具监控所有cpu上的sched_switch(进程切换)事件30秒: #trace-cmd record -e sched:sched_switch -M -1 sleep 30
然后就想到是不是系统中某个进程搞的鬼,不让cpu睡眠到c7s. 这时候使用trace event监控一下系统中sched_switch事件. 使用trace-cmd工具监控所有cpu上的sched_switch(进程切换)事件30秒: #trace-cmd record -e sched:sched_switch -M-1sleep30 2CPU0 data recorded at offset=0x63e000 ...
"record a trace into a trace.dat file", " %s record [-v][-e event [-f filter]][-p plugin][-F][-d][-o file] \\\n" " [-s usecs][-O option ][-l func][-g func][-n func] \\\n" " [-P pid][-N host:port][-t][-r prio][-b size][command ...]\n" ...