Struct FixtureSpec 

pub struct FixtureSpec {
    pub cache_pages: usize,
    pub page_bytes: usize,
    pub world_files: usize,
    pub world_file_bytes: usize,
    pub model_diff_bytes: usize,
    pub effects_entries: usize,
    pub trace_messages: usize,
    pub seed: u64,
}

Tunable knobs for the fixture set. Defaults sized for a sub-500-ms run on macOS arm64 (the build host). CI / GPU hosts override cache_pages and model_diff_bytes upward.

Fields

cache_pages: usize

Number of paged KV-cache pages to emit (each page_bytes long).

page_bytes: usize

Bytes per cache page (default 32 KiB ≈ realistic vLLM page size).

world_files: usize

Number of files to emit in the world-layer FS tree.

world_file_bytes: usize

Bytes per world file.

model_diff_bytes: usize

Bytes of the (single) model-diff blob.

effects_entries: usize

Number of effect-ledger entries.

trace_messages: usize

Number of trace messages.

seed: u64

Optional seed mixed into payloads to differentiate forks.

Trait Implementations

impl Clone for FixtureSpec

fn clone(&self) -> FixtureSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FixtureSpec

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

Formats the value using the given formatter.

impl Default for FixtureSpec

fn default() -> Self

Returns the “default value” for a type.