Struct ChurnReport 

pub struct ChurnReport {
    pub allocations: u32,
    pub fragmentation_failures: u32,
    pub forced_frees: u32,
    pub pages_moved: u64,
    pub mean_fragmentation_permille: u32,
    pub max_fragmentation_permille: u32,
    pub mean_utilization_permille: u32,
}

What a churn run found.

Fields

allocations: u32

Placements attempted.

fragmentation_failures: u32

Placements that failed although enough pages were free in total, after compaction if it is on: the definition of fragmentation loss.

forced_frees: u32

Runs freed to make room (evictions).

pages_moved: u64

Pages moved by compaction.

mean_fragmentation_permille: u32

Mean free-space fragmentation after each operation, in permille.

max_fragmentation_permille: u32

Worst fragmentation seen, in permille.

mean_utilization_permille: u32

Mean share of the pool in use after each operation, in permille.

Trait Implementations

impl Clone for ChurnReport

fn clone(&self) -> ChurnReport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ChurnReport

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

Formats the value using the given formatter.

impl Default for ChurnReport

fn default() -> ChurnReport

Returns the “default value” for a type.

impl PartialEq for ChurnReport

fn eq(&self, other: &ChurnReport) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ChurnReport

impl Eq for ChurnReport

impl StructuralPartialEq for ChurnReport