Struct shadow_rs::core::runahead::Runahead

pub struct Runahead { /* private fields */ }

Decides on the runahead for the next simulation round (the duration of the round).

Having a larger runahead improves performance since more hosts and more events can be run in parallel during a simulation round, but if the runahead is too large then packets will be delayed until the next simulation round which is beyond their intended latency. This uses a fixed runahead of the provided minimum possible latency when dynamic runahead is disabled, and otherwise uses a dynamic runahead of the minimum used latency. Both runahead calculations have a static lower bound.

Implementations

impl Runahead

pub fn new( is_runahead_dynamic: bool, min_possible_latency: SimulationTime, min_runahead_config: Option<SimulationTime>, ) -> Self

pub fn get(&self) -> SimulationTime

Get the runahead for the next round.

pub fn update_lowest_used_latency(&self, latency: SimulationTime)

If dynamic runahead is enabled, will compare and update the stored lowest packet latency. This may shorten the runahead for future rounds.

Trait Implementations

impl Debug for Runahead

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.