in benches/benches.rs [242:260]
fn new() -> Self {
#[cfg(target_os = "linux")]
{
Perf {
unit: if cycles_wanted() && PerfEvent::create_cycle_counter().is_some() {
PerfUnit::Cycle
} else {
PerfUnit::Time
},
}
}
#[cfg(not(target_os = "linux"))]
{
Perf {
unit: PerfUnit::Time,
}
}
}