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Fix for the wrench's percentile function #807

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Merged
merged 1 commit into from
Jan 31, 2017
Merged

Fix for the wrench's percentile function #807

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23 changes: 14 additions & 9 deletions wrench/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -80,13 +80,16 @@ lazy_static! {
pub static mut CURRENT_FRAME_NUMBER: u32 = 0;

fn percentile(values: &[f64], pct_int: u32) -> f64 {
let pct = pct_int as f32 / 100.;
let index_f = (values.len()-1) as f32 * pct;
let index = f32::floor(index_f) as usize;
if index == index_f as usize {
values[index]
if values.len() > 0 {
let index_big = (values.len() - 1) * (pct_int as usize);
let index = index_big / 100;
if index * 100 == index_big {
values[index]
} else {
(values[index] + values[index+1]) / 2.
}
} else {
(values[index] + values[index+1]) / 2.
1.0
}
}

Expand Down Expand Up @@ -344,7 +347,7 @@ fn main() {
let mut max_time = time::Duration::min_value();
let mut max_max_time = time::Duration::min_value();
let mut sum_time = time::Duration::zero();
let mut block_avg_ms = vec![];
let mut block_avg_time = vec![];
let mut warmed_up = false;

fn as_ms(f: time::Duration) -> f64 { f.num_microseconds().unwrap() as f64 / 1000. }
Expand All @@ -357,7 +360,9 @@ fn main() {

if let Some(limit) = limit_seconds {
if (time::SteadyTime::now() - time_start) >= limit {
let mut block_avg_ms = block_avg_ms.iter().map(|v| as_ms(*v)).collect::<Vec<f64>>();
let mut block_avg_ms = block_avg_time.iter()
.map(|v| as_ms(*v))
.collect::<Vec<f64>>();
block_avg_ms.sort_by(|a, b| a.partial_cmp(b).unwrap());
let avg_ms = block_avg_ms.iter().fold(0., |sum, v| sum + v) / block_avg_ms.len() as f64;
let val_10th_pct = percentile(&block_avg_ms, 10);
Expand Down Expand Up @@ -424,7 +429,7 @@ fn main() {
if frame_count == frames_between_dumps {
let avg_time = sum_time / frame_count;
if warmed_up {
block_avg_ms.push(avg_time);
block_avg_time.push(avg_time);
}

if wrench.verbose {
Expand Down