diff options
| -rw-r--r-- | src/libextra/test.rs | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/libextra/test.rs b/src/libextra/test.rs index 1bda69360c2..c2b4ff05d5d 100644 --- a/src/libextra/test.rs +++ b/src/libextra/test.rs @@ -1110,6 +1110,15 @@ impl BenchHarness { } else { n = 1_000_000 / self.ns_per_iter().max(&1); } + // if the first run took more than 1ms we don't want to just + // be left doing 0 iterations on every loop. The unfortunate + // side effect of not being able to do as many runs is + // automatically handled by the statistical analysis below + // (i.e. larger error bars). + if n == 0 { n = 1; } + + debug!("Initial run took {} ns, iter count that takes 1ms estimated as {}", + self.ns_per_iter(), n); let mut total_run = 0; let samples : &mut [f64] = [0.0_f64, ..50]; @@ -1141,7 +1150,7 @@ impl BenchHarness { let now = precise_time_ns(); let loop_run = now - loop_start; - // If we've run for 100ms an seem to have converged to a + // If we've run for 100ms and seem to have converged to a // stable median. if loop_run > 100_000_000 && summ.median_abs_dev_pct < 1.0 && |