Extract quantity and command helpers

src/benchmark/executor.rs

@@ -266,7 +266,7 @@ impl Executor for ShellExecutor<'_> {
             time_wall_clock: measurements.time_wall_clock_mean(),
             time_user: measurements.time_user_mean(),
             time_system: measurements.time_system_mean(),
-            peak_memory_usage: Information::zero(),
+            peak_memory_usage: measurements.peak_memory_usage_mean(),
             exit_status: ExitStatus::default(),
         });
 

src/benchmark/measurement.rs

@@ -1,7 +1,7 @@
 use std::process::ExitStatus;
 
 use crate::quantity::statistics::{max, mean, median, min, modified_zscores, standard_deviation};
-use crate::quantity::{second, Information, Time};
+use crate::quantity::{Information, Time};
 
 /// Performance measurements and exit status from running a single command
 #[derive(Debug, Default, Copy, Clone)]
@@ -77,12 +77,7 @@ impl Measurements {
 
     /// Compute modified Z-scores for the wall clock times.
     pub fn modified_zscores(&self) -> Vec<f64> {
-        modified_zscores(
-            &self
-                .wall_clock_times()
-                .map(|t| t.get::<second>())
-                .collect::<Vec<_>>(),
-        )
+        modified_zscores(&self.wall_clock_times().collect::<Vec<_>>())
     }
 
     /// The average user time.
@@ -94,4 +89,8 @@ impl Measurements {
     pub fn time_system_mean(&self) -> Time {
         mean(self.measurements.iter().map(|m| m.time_system))
     }
+
+    pub fn peak_memory_usage_mean(&self) -> Information {
+        mean(self.measurements.iter().map(|m| m.peak_memory_usage))
+    }
 }