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

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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: Frederic 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: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker 2009-09-13 01:56:25 +02:00 committed by Ingo Molnar
parent c6ced61112
commit 66685678a0
1 changed files with 22 additions and 26 deletions
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48
tools/perf/builtin-sched.c
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@ -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;
u64 avg;
list_for_each_entry(atom, &atom_list->snapshot_list, list) {
total_runtime += atom->runtime;
if (atom->state != THREAD_SCHED_IN)
continue;
count++;
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)