Struct LayoutAnalysis 

pub struct LayoutAnalysis {
    pub tile_count: usize,
    pub unique_data_count: usize,
    pub dedup_ratio: f64,
    pub is_clustered: bool,
    pub max_gap: u64,
    pub mean_gap: f64,
}

Result of analysing a tile-ordering manifest.

Produced by analyze_tile_ordering and consumed by choose_strategy.

Fields

tile_count: usize

Total number of tile entries analysed.

unique_data_count: usize

Number of distinct data_offset values. Identical offsets indicate deduplicated tiles that share a single payload, so this is a proxy for the count of unique payloads.

dedup_ratio: f64

Fraction of tiles that are deduplicated, in [0.0, 1.0).

Computed as 1.0 - unique_data_count / tile_count. 0.0 when every tile is unique (or the manifest is empty).

is_clustered: bool

true when, taken in ascending tile_id order, the data offsets are monotonically non-decreasing (i.e. the archive is clustered). Empty and single-entry manifests are trivially clustered.

max_gap: u64

Largest gap, in bytes, between the end of one tile’s payload and the start of the next (in tile_id order). 0 when there are no positive gaps or fewer than two entries.

mean_gap: f64

Mean of all positive inter-tile gaps in bytes. 0.0 when there are no positive gaps or fewer than two entries.

Trait Implementations

impl Clone for LayoutAnalysis

fn clone(&self) -> LayoutAnalysis

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutAnalysis

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

Formats the value using the given formatter.