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RuntimeTuning

revmc_runtime::runtime

Struct RuntimeTuning 

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pub struct RuntimeTuning {
Show 15 fields
    pub channel_capacity: usize,
    pub max_events_per_drain: usize,
    pub event_drain_interval: Duration,
    pub shutdown_timeout: Duration,
    pub jit_hot_threshold: usize,
    pub jit_max_bytecode_len: usize,
    pub jit_max_pending_jobs: usize,
    pub jit_worker_count: usize,
    pub jit_worker_queue_capacity: usize,
    pub jit_opt_level: OptimizationLevel,
    pub aot_opt_level: OptimizationLevel,
    pub resident_code_cache_bytes: usize,
    pub idle_evict_duration: Option<Duration>,
    pub eviction_sweep_interval: Duration,
    pub compiler_recycle_threshold: usize,

}
Expand description

Tuning knobs for the runtime.

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§channel_capacity: usize

Capacity of the channel between API callers and the backend.

Defaults to 4096.

§max_events_per_drain: usize

Maximum lookup events processed per backend wakeup.

Defaults to 4096.

§event_drain_interval: Duration

Maximum delay between lookup observation and hotness accounting.

Defaults to 100ms.

§shutdown_timeout: Duration

Timeout for joining the backend thread during shutdown.

Defaults to 5s.

§jit_hot_threshold: usize

Number of observed misses before a key is promoted to JIT compilation.

Defaults to 8.

§jit_max_bytecode_len: usize

Maximum bytecode length eligible for compilation. 0 = no limit.

Defaults to 0.

§jit_max_pending_jobs: usize

Maximum number of JIT compilation jobs in flight.

Defaults to 2048.

§jit_worker_count: usize

Number of JIT compilation worker threads.

Defaults to min(max(1, cpus/2), 4).

§jit_worker_queue_capacity: usize

Capacity of the per-worker job queue.

Defaults to 64.

§jit_opt_level: OptimizationLevel

Optimization level for JIT compilation.

Defaults to OptimizationLevel::Default.

§aot_opt_level: OptimizationLevel

Optimization level for AOT compilation.

Defaults to OptimizationLevel::Default.

§resident_code_cache_bytes: usize

Maximum total resident compiled code size in bytes. 0 = no limit.

When exceeded, least-recently-used entries are evicted.

Defaults to 0.

§idle_evict_duration: Option<Duration>

Duration after which a resident program with no lookup hits is evicted. None disables idle eviction.

Defaults to None.

§eviction_sweep_interval: Duration

How often the backend runs eviction sweeps, if idle_evict_duration is set.

Defaults to 60s.

§compiler_recycle_threshold: usize

Number of compilations before recycling the compiler to reclaim accumulated memory. 0 = never recycle.

Defaults to 1000.

Implementations§

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impl RuntimeTuning

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pub fn should_compile(&self, bytecode: &[u8]) -> bool

Returns whether bytecode is eligible for JIT/AOT compilation.

Trait Implementations§

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impl Clone for RuntimeTuning

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fn clone(&self) -> RuntimeTuning

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 RuntimeTuning

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fn default() -> Self

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

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Size: 144 bytes