Struct TierPolicy 

pub struct TierPolicy {
    pub hot_min_score: u32,
    pub warm_min_score: u32,
    pub warm_bits: u8,
    pub drift_pct_q8: u32,
    pub group_len: u32,
}

Fields

hot_min_score: u32

warm_min_score: u32

warm_bits: u8

drift_pct_q8: u32

Drift tolerance as Q8 fixed-point. 26 means ~10.2% (26/256).

group_len: u32

Implementations

impl TierPolicy

pub fn select_bits( &self, access_count: u32, last_access_ts: u32, now_ts: u32, ) -> u8

Select bit width based on access pattern.

pub fn drift_factor(&self) -> f32

Compute the drift factor as 1.0 + drift_pct_q8/256.

Trait Implementations

impl Clone for TierPolicy

fn clone(&self) -> TierPolicy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TierPolicy

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

Formats the value using the given formatter.

impl Default for TierPolicy

fn default() -> Self

Returns the “default value” for a type.

impl Copy for TierPolicy