Struct PerNodeNumaStats 

#[non_exhaustive]
pub struct PerNodeNumaStats {
    pub node: u32,
    pub numa_hit: u64,
    pub numa_miss: u64,
    pub numa_foreign: u64,
    pub numa_interleave_hit: u64,
    pub numa_local: u64,
    pub numa_other: u64,
}

Per-node NUMA event counters captured from pglist_data->node_zones[]->vm_numa_event[] at freeze time.

Each row is one row of NUMA event counters summed across all zones on a single node. The six counters mirror the kernel’s enum numa_stat_item (see super::btf_offsets::NUMA_HIT etc. for the enum-stable indices). All counters are monotonic-since-boot; consumers diff against a baseline (or against another node’s row) to extract the test-window delta.

Diagnostic value for sched_ext stalls is informational only — the NUMA balancer is not active for ext tasks. The rows surface here so an operator triaging a NUMA-aware workload (e.g. a memory-tiering test) can verify the kernel actually observed the expected node-locality distribution.

Live walker status: the wire shape, BTF offsets (super::btf_offsets::NumaStatsOffsets), and report field are wired through. The actual host-side walker that resolves node_data[] and reads per-zone counters is pending; until it lands, the report’s FailureDumpReport::per_node_numa vec stays empty and FailureDumpReport::per_node_numa_unavailable carries the "no NUMA walker" reason.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

node: u32

NUMA node id this row describes.

numa_hit: u64

vm_numa_event[NUMA_HIT] summed across zones — pages allocated on the requested node when local was preferred.

numa_miss: u64

vm_numa_event[NUMA_MISS] — local node full, allocation landed on a non-local node.

numa_foreign: u64

vm_numa_event[NUMA_FOREIGN] — process-policy targeted a different node, this node honored the policy.

numa_interleave_hit: u64

vm_numa_event[NUMA_INTERLEAVE_HIT] — interleave policy allocations that landed on this node.

numa_local: u64

vm_numa_event[NUMA_LOCAL] — allocations on this node by processes running on this node.

numa_other: u64

vm_numa_event[NUMA_OTHER] — allocations on this node by processes running on a different node.

Trait Implementations

impl Clone for PerNodeNumaStats

fn clone(&self) -> PerNodeNumaStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PerNodeNumaStats

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

Formats the value using the given formatter.

impl Default for PerNodeNumaStats

fn default() -> PerNodeNumaStats

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PerNodeNumaStats

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PerNodeNumaStats

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.