Struct Record 

pub struct Record {
    pub v: u32,
    pub bench: String,
    pub tool: String,
    pub version: Option<String>,
    pub runner: String,
    pub ts: String,
    pub metrics: BTreeMap<String, f64>,
}

Fields

v: u32

Schema version. Serialised first-by-name (v) purely by BTreeMap ordering.

bench: String

Benchmark name, from bench.toml.

tool: String

Which program produced this measurement. Defaults to the project itself; set to pnpm, npm, … for competitive comparisons, which are wall-clock only — instruction counts across different programs are not comparable.

version: Option<String>

Version of tool, when meaningful (release backfills, competitors).

runner: String

Runner class. Series MUST be partitioned on this: moving between runner types shifts absolute numbers enough to look like a regression.

ts: String

RFC 3339, second resolution.

metrics: BTreeMap<String, f64>

Metric name -> value. Deterministic metrics (instructions) are integers; timings are milliseconds. A BTreeMap so key order is stable across writers.

Implementations

impl Record

pub fn to_line(&self) -> Result<String>

Serialise to a single line, with map keys sorted.

Stability matters: cat_sort_uniq dedupes byte-identical lines, so an identical measurement written twice must collapse to one entry.

pub fn from_line(line: &str) -> Result<Option<Self>>

Parse one line. Returns Ok(None) for blank lines and for records from a future schema version, so that a newer writer cannot break an older reader.

Trait Implementations

impl Clone for Record

fn clone(&self) -> Record

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Record

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Record

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Record

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

where __S: Serializer,

Serialize this value into the given Serde serializer.