Struct BgWriterStats

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pub struct BgWriterStats {
    pub rounds: AtomicU64,
    pub pages_flushed: AtomicU64,
    pub max_round_hit: AtomicU64,
    pub last_dirty_fraction_milli: AtomicU64,
}

Expand description

Diagnostic counters published by the background writer for monitoring / EXPLAIN ANALYZE-style introspection.

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§rounds: AtomicU64

Total scan rounds executed since startup.

§pages_flushed: AtomicU64

Total pages flushed since startup.

§max_round_hit: AtomicU64

Total times the writer exited a round early because it hit max_pages_per_round.

§last_dirty_fraction_milli: AtomicU64

Last reported dirty fraction (×1000 to keep it integer).

Implementations§

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impl BgWriterStats

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pub fn new() -> Arc<Self> ⓘ

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pub fn snapshot(&self) -> BgWriterStatsSnapshot

Snapshot the counters as a plain struct for display.

Trait Implementations§

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impl Debug for BgWriterStats

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

Formats the value using the given formatter. Read more

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impl Default for BgWriterStats

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fn default() -> BgWriterStats

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnwindSafe for BgWriterStats

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more

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where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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Calls U::from(self).

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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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where F: FnOnce(&Self) -> bool,

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