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Fix the way we compute the 99th percentile

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Clément Renault 2023-07-05 17:53:09 +02:00
parent 377fe33aac
commit d727ebee05
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1 changed files with 4 additions and 4 deletions
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8
meilisearch/src/analytics/segment_analytics.rs
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@ -761,17 +761,17 @@ impl SearchAggregator {
if self.total_received == 0 { if self.total_received == 0 {
None None
} else { } else {
// the index of the 99th percentage of value
let percentile_99th = 0.99 * (self.total_succeeded as f64 - 1.) + 1.;
// we get all the values in a sorted manner // we get all the values in a sorted manner
let time_spent = self.time_spent.into_sorted_vec(); let time_spent = self.time_spent.into_sorted_vec();
// the index of the 99th percentage of value
let percentile_99th = time_spent.len() * 99 / 100;
// We are only interested by the slowest value of the 99th fastest results // We are only interested by the slowest value of the 99th fastest results
let time_spent = time_spent.get(percentile_99th as usize); let time_spent = time_spent.get(percentile_99th);
let properties = json!({ let properties = json!({
"user-agent": self.user_agents, "user-agent": self.user_agents,
"requests": { "requests": {
"99th_response_time": time_spent.map(|t| format!("{:.2}", t)), "99th_response_time": time_spent.map(|t| format!("{:.2}", t)),
"total_succeeded": self.total_succeeded, "total_succeeded": self.total_succeeded,
"total_failed": self.total_received.saturating_sub(self.total_succeeded), // just to be sure we never panics "total_failed": self.total_received.saturating_sub(self.total_succeeded), // just to be sure we never panics
"total_received": self.total_received, "total_received": self.total_received,