Struct AdaptiveMemtableSizer

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pub struct AdaptiveMemtableSizer { /* private fields */ }

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Expand description

Adaptive memtable sizer with memory pressure feedback

Dynamically adjusts memtable flush threshold based on:

Write rate (to maintain target buffer duration)
Memory pressure (to avoid OOM)

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impl AdaptiveMemtableSizer

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pub fn new() -> Self

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Create a new adaptive sizer with default configuration

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pub fn with_config(config: AdaptiveMemtableConfig) -> Self

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Create with custom configuration

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pub fn record_write(&self, bytes: usize)

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Record bytes written (call on every write)

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pub fn current_size(&self) -> usize

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Get current recommended memtable size

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pub fn write_rate(&self) -> f64

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Get estimated write rate in bytes per second

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pub fn memory_pressure(&self) -> f64

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Get current memory pressure (0.0 - 1.0)

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pub fn update(&self) -> usize

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Update the adaptive size (call periodically, e.g., every second)

Returns the new recommended memtable size

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pub fn should_flush(&self, current_memtable_bytes: u64) -> bool

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Check if the memtable should be flushed based on current size

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pub fn stats(&self) -> AdaptiveMemtableStats

👎Deprecated:

Unused duplicate memtable; live memtables are lscs::ColumnarMemtable + durable_storage::MvccMemTable. Scheduled for removal (Task 2 consolidation).

Get statistics for monitoring

Trait Implementations§

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impl Default for AdaptiveMemtableSizer

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fn default() -> Self

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

Auto Trait Implementations§

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impl UnwindSafe for AdaptiveMemtableSizer

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