Struct EnergyMeter 

pub struct EnergyMeter { /* private fields */ }

2026-09-26: The energy lifecycle of one benchmark run: start the sampler (loopback targets only), take the idle baseline, hand out per-window integrals, stop and report the cost. The concurrency sweep and decode-floor drivers hold one as a field and log the lines it returns.

When the rail is unreadable the run continues: the returned lines say why, and the record carries no gpu_rail_* keys.

Implementations

impl EnergyMeter

pub async fn start(&mut self, target: &TargetEndpoint) -> Vec<LogLine>

2026-09-26: Start sampling for target, then sample the idle baseline. Call with the model loaded and nothing in flight, before the first measured window.

pub fn window(&self, start: Instant, end: Instant) -> Option<EnergyWindow>

2026-09-26: The integral over one measured window, when sampling is live.

pub fn idle(&self) -> Option<&EnergyWindow>

pub async fn stop(&mut self) -> Option<LogLine>

2026-09-26: Stop the sampler; its cost becomes part of this meter’s record keys. Returns the line to log, or None when nothing was running.

pub fn metrics(&self, m: &mut BTreeMap<String, f64>)

2026-09-26: The run-level keys: the idle baseline and the sampler’s cost. Per-window keys come from EnergyWindow::metrics.

Trait Implementations

impl Default for EnergyMeter

fn default() -> EnergyMeter

Returns the “default value” for a type.