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Commit 66685678 authored by Frederic Weisbecker's avatar Frederic Weisbecker Committed by Ingo Molnar
Browse files

perf sched: Export the total, max latency and total runtime to thread atoms list 



Add a field in the thread atom list that keeps track of the
total and max latencies and also the total runtime. This makes
a faster output and also prepares for sorting.

Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent c6ced611

tools/perf/builtin-sched.c

+22 −26
Original line number Diff line number Diff line
@@ -884,6 +884,10 @@ struct task_atoms { 
	struct list_head	snapshot_list;

	struct thread		*thread;

	struct rb_node		node;

	u64			max_lat;

	u64			total_lat;

	u64			nb_atoms;

	u64			total_runtime;

};



static struct rb_root lat_snapshot_root;
@@ -985,6 +989,7 @@ static void 
lat_sched_in(struct task_atoms *atoms, u64 timestamp)

{

	struct work_atom *snapshot;

	u64 delta;



	if (list_empty(&atoms->snapshot_list))

		return;
@@ -1002,6 +1007,13 @@ lat_sched_in(struct task_atoms *atoms, u64 timestamp) 


	snapshot->state = THREAD_SCHED_IN;

	snapshot->sched_in_time = timestamp;



	delta = snapshot->sched_in_time - snapshot->wake_up_time;

	atoms->total_lat += delta;

	if (delta > atoms->max_lat)

		atoms->max_lat = delta;

	atoms->nb_atoms++;

	atoms->total_runtime += snapshot->runtime;

}



static void
@@ -1099,43 +1111,27 @@ static u64 all_count; 


static void output_lat_thread(struct task_atoms *atom_list)

{

	struct work_atom *atom;

	int count = 0;

	int i;

	int ret;

	u64 max = 0, avg;

	u64 total = 0, delta;

	u64 total_runtime = 0;



	list_for_each_entry(atom, &atom_list->snapshot_list, list) {

		total_runtime += atom->runtime;



		if (atom->state != THREAD_SCHED_IN)

			continue;



		count++;

	u64 avg;



		delta = atom->sched_in_time - atom->wake_up_time;

		if (delta > max)

			max = delta;

		total += delta;

	}



	all_runtime += total_runtime;

	all_count += count;



	if (!count)

	if (!atom_list->nb_atoms)

		return;



	all_runtime += atom_list->total_runtime;

	all_count += atom_list->nb_atoms;



	ret = printf(" %s ", atom_list->thread->comm);



	for (i = 0; i < 19 - ret; i++)

		printf(" ");



	avg = total / count;

	avg = atom_list->total_lat / atom_list->nb_atoms;



	printf("|%9.3f ms |%9d | avg:%9.3f ms | max:%9.3f ms |\n",

		(double)total_runtime/1e9, count, (double)avg/1e9, (double)max/1e9);

	printf("|%9.3f ms |%9llu | avg:%9.3f ms | max:%9.3f ms |\n",

	      (double)atom_list->total_runtime / 1e9,

		 atom_list->nb_atoms, (double)avg / 1e9,

		 (double)atom_list->max_lat / 1e9);

}



static void __cmd_lat(void)