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LlcLayout

scx_cake

Struct LlcLayout 

Source 
pub(crate) struct LlcLayout {
    pub(crate) domain: BTreeMap<usize, u16>,
    pub(crate) dense: BTreeMap<usize, u8>,
    pub(crate) word: BTreeMap<usize, u64>,
    pub(crate) nr_llcs: u32,
    pub(crate) collapsed: Option<usize>,
}
Expand description

The LLC topology the loader publishes to rodata, built from (cpu id, llc id) pairs so any host shape can be tested without a machine.

Fields§

§domain: BTreeMap<usize, u16>

Physical identity is never collapsed to the bounded pool namespace.

§dense: BTreeMap<usize, u8>

Dense pool index per topology LLC id; every id maps, ids are assigned in ascending LLC order.

§word: BTreeMap<usize, u64>

The CPUs (ids below 64) sharing each LLC, as one word. An LLC with no CPU below 64 gets all ones: the census paths that read the word only run inside one word, and all ones is the LLC-blind walk.

§nr_llcs: u32§collapsed: Option<usize>

Set when more LLCs exist than pools: everything went to pool 0.

Implementations§

Source§

impl LlcLayout

Source

pub(crate) fn build(cpus: &[(usize, usize)], max_llcs: usize) -> Self

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