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WriteTuning

micromegas::object_cache::foyer_backend

Struct WriteTuning 

Source 
pub struct WriteTuning {
    pub flushers: usize,
    pub buffer_pool_bytes: usize,
    pub submit_queue_threshold_bytes: usize,
}
Expand description

foyer disk-engine write-path tuning. Defaults reproduce foyer’s own BlockEngineConfig defaults (flushers=1, buffer_pool_size=16 MiB), with the submit-queue threshold pinned to 2x the buffer pool – which foyer’s doc comment describes as its intended default but which 0.22 no longer applies automatically (its actual default is 1x, see BlockEngineConfig::new) – so existing callers/tests are unaffected unless they opt into a different tuning.

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§flushers: usize

BlockEngineConfig::with_flushers.

§buffer_pool_bytes: usize

BlockEngineConfig::with_buffer_pool_size, in bytes.

§submit_queue_threshold_bytes: usize

BlockEngineConfig::with_submit_queue_size_threshold, in bytes.

Trait Implementations§

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impl Clone for WriteTuning

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fn clone(&self) -> WriteTuning

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for WriteTuning

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

Formats the value using the given formatter. Read more
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impl Default for WriteTuning

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fn default() -> WriteTuning

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

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