something something

Author: Shourya742

src/bootstrap/src/utils/exec.rs

@@ -16,6 +16,7 @@ use std::path::Path;
 use std::process::{
     Child, ChildStderr, ChildStdout, Command, CommandArgs, CommandEnvs, ExitStatus, Output, Stdio,
 };
+use std::time::{Duration, Instant};
 use std::sync::{Arc, Mutex};
 
 use build_helper::ci::CiEnv;
@@ -75,7 +76,7 @@ pub struct CommandCacheKey {
 #[derive(Default, Clone)]
 pub struct CommandProfile {
     pub count: usize,
-    pub total_duration: Duration,
+    pub max_duration: Duration,
 }
 
 #[derive(Default)]
@@ -89,22 +90,21 @@ impl CommandProfiler {
         let mut stats = self.stats.lock().unwrap();
         let entry = stats.entry(key).or_default();
         entry.count += 1;
-        entry.total_duration += duration;
+        entry.max_duration = std::cmp::max(entry.max_duration, duration);
     }
 
     pub fn report_slowest(&self, top_n: usize) {
         let stats = self.stats.lock().unwrap();
         let mut entries: Vec<_> = stats.iter().collect();
-        entries.sort_by_key(|(_, stat)| std::cmp::Reverse(stat.total_duration));
+        entries.sort_by_key(|(_, stat)| std::cmp::Reverse(stat.max_duration));
 
         println!("\nTop {top_n} slowest commands:");
         for (key, profile) in entries.into_iter().take(top_n) {
             println!(
-                "- {:?} (count: {}, total: {:.2?}, avg: {:.2?})",
+                "- {:?} (count: {}, max_duration: {:.2?})",
                 key.program,
                 profile.count,
-                profile.total_duration,
-                profile.total_duration / profile.count as u32
+                profile.max_duration,
             );
         }
     }
@@ -122,7 +122,7 @@ impl CommandProfiler {
                     "envs": key.envs,
                     "cwd": key.cwd,
                     "count": profile.count,
-                    "total_duration_ms": profile.total_duration.as_millis(),
+                    "max_duration_ms": profile.max_duration.as_millis(),
                 })
             })
             .collect();