pub fn max_disk_util(
prev: &[(String, u64)],
cur: &[(String, u64)],
dt_ms: f64,
) -> Option<(String, f64)>Expand description
The highest per-device utilization between two diskstats snapshots taken
dt_ms apart. Devices present in only one snapshot are skipped (hotplug
between samples); an empty intersection yields None.