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copied!<p>Well, now it is sure: the format belongs to <strong>ftrace</strong> tool. Android <strong>atrace</strong> is an extension of <strong>ftrace</strong> build to facilitate configuration.</p> <p>The official documentation from <strong>ftrace</strong>, shows that this output format can directly be produced by it in the following way: </p> <pre><code>root@adroid:# echo 1 > /sys/kernel/debug/tracing/events/sched/sched_switch/enable root@adroid:# echo 1 > /sys/kernel/debug/tracing/tracing_on root@adroid:# cat /sys/kernel/debug/tracing/trace > mytracefile.txt root@adroid:# echo 0 > /sys/kernel/debug/tracing/tracing_on root@adroid:# echo 0 > /sys/kernel/debug/tracing/events/sched/sched_switch/enable </code></pre> <p>Official Documentation at: <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/trace/ftrace.txt" rel="nofollow">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/trace/ftrace.txt</a></p> <pre><code># cat trace # tracer: nop # # entries-in-buffer/entries-written: 77/77 #P:8 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | <idle>-0 [007] d... 2440.707395: sched_switch: prev_comm=swapper/7 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=snapshot-test-2 next_pid=2243 next_prio=120 snapshot-test-2-2229 [002] d... 2440.707438: sched_switch: prev_comm=snapshot-test-2 prev_pid=2229 prev_prio=120 prev_state=S ==> next_comm=swapper/2 next_pid=0 next_prio=120 [...] </code></pre> <p>Regards,</p>

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