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| author | Paul E. McKenney <paulmck@kernel.org> | 2020-05-25 15:31:07 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2020-06-29 12:00:44 -0700 |
| commit | 83b88c86da0e5f97faeac5a9bb19fe32f8c0394b (patch) | |
| tree | 33dfaac65cd4e24ca3f9a112f990df4a5bf325fb /kernel/rcu | |
| parent | 75dd8efef56ed5959c398974c785026f84aa0d1a (diff) | |
| download | linux-83b88c86da0e5f97faeac5a9bb19fe32f8c0394b.tar.bz2 | |
refperf: Allow decimal nanoseconds
The CONFIG_PREEMPT=n rcu_read_lock()/rcu_read_unlock() pair's overhead,
even including loop overhead, is far less than one nanosecond.
Since logscale plots are not all that happy with zero values, provide
picoseconds as decimals.
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/refperf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/rcu/refperf.c b/kernel/rcu/refperf.c index 57c7b7a40bd2..e991d4820f51 100644 --- a/kernel/rcu/refperf.c +++ b/kernel/rcu/refperf.c @@ -375,7 +375,7 @@ static int main_func(void *arg) if (torture_must_stop()) goto end; - reader_tasks[exp].result_avg = process_durations(exp) / ((exp + 1) * loops); + reader_tasks[exp].result_avg = 1000 * process_durations(exp) / ((exp + 1) * loops); } // Print the average of all experiments @@ -386,7 +386,7 @@ static int main_func(void *arg) strcat(buf, "Threads\tTime(ns)\n"); for (exp = 0; exp < nreaders; exp++) { - sprintf(buf1, "%d\t%llu\n", exp + 1, reader_tasks[exp].result_avg); + sprintf(buf1, "%d\t%llu.%03d\n", exp + 1, reader_tasks[exp].result_avg / 1000, (int)(reader_tasks[exp].result_avg % 1000)); strcat(buf, buf1); } |