Struct BenchArgs 

pub struct BenchArgs {
    pub iterations: usize,
    pub warmup: usize,
    pub json: bool,
    pub baseline: Option<String>,
    pub regression_threshold: f64,
    pub history: Option<PathBuf>,
    pub scale: Option<usize>,
}

Fields

iterations: usize

Measured iterations per operation. Clamped to [1, 100_000].

warmup: usize

Warmup iterations discarded from the percentile sample. Clamped to [0, 10_000].

json: bool

Emit results as JSON instead of the human-readable table.

baseline: Option<String>

Path to a previous bench --json payload. When supplied, the fresh run is compared per-operation against this baseline and the process exits non-zero if any measured p95 exceeds the baseline by more than --regression-threshold percent. Independent of the absolute-budget guard.

regression_threshold: f64

Allowed p95 growth (percent) over the --baseline reading before a row is flagged as a regression. Clamped to [0.0, 1000.0]. Has no effect without --baseline.

history: Option<PathBuf>

Append this run to a JSONL history file (one self-describing JSON object per line). Creates the file and any missing parent directories on first call. Each entry carries captured_at (RFC3339), iterations, warmup, and the same results array --json emits — long-running campaigns can build a regression dataset to feed downstream tooling. The CLI table / JSON output still prints; this flag only adds the append side effect.

scale: Option<usize>

#1579 B8 — seed a scratch corpus of N rows before running the workload and gate the verdict against the per-scale budget table in PERFORMANCE.md §“Corpus-scale budgets”. Omitting the flag keeps the legacy ~500-row workload and legacy budgets. Clamped to [1, 1_000_000].

Trait Implementations

impl Args for BenchArgs

fn group_id() -> Option<Id>

Report the ArgGroup::id for this set of arguments

fn augment_args<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate Self via FromArgMatches::from_arg_matches_mut

fn augment_args_for_update<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate self via FromArgMatches::update_from_arg_matches_mut

impl FromArgMatches for BenchArgs

fn from_arg_matches(__clap_arg_matches: &ArgMatches) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn from_arg_matches_mut( __clap_arg_matches: &mut ArgMatches, ) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn update_from_arg_matches( &mut self, __clap_arg_matches: &ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

fn update_from_arg_matches_mut( &mut self, __clap_arg_matches: &mut ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.