On 10/17/2017 3:51 PM, Chris Wilson wrote:
As we use rounding when converting from hw clocks to time, we may report
a residency greater than wallclock (by a small margin), so allow us to
overshoot by 5% (just due to our inaccuracy).
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
---
tests/pm_rc6_residency.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tests/pm_rc6_residency.c b/tests/pm_rc6_residency.c
index d6fc4701..520d3b54 100644
--- a/tests/pm_rc6_residency.c
+++ b/tests/pm_rc6_residency.c
@@ -79,9 +79,9 @@ static void residency_accuracy(unsigned int diff,
ratio = (double)diff / duration;
- igt_info("Residency in %s or deeper state: %u ms (sleep duration %u ms) (ratio to expected duration: %.02f)\n",
- name_of_rc6_residency, diff, duration, ratio);
- igt_assert_f(ratio > 0.9 && ratio <= 1,
+ igt_info("Residency in %s or deeper state: %u ms (sleep duration %u ms) (%.1f%% of expected duration)\n",
+ name_of_rc6_residency, diff, duration, 100*ratio);
+ igt_assert_f(ratio > 0.9 && ratio <= 1.05,
"Sysfs RC6 residency counter is inaccurate.\n");
}
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