Function perf_warm

xtask/src/main.rs:1625–1764

(args: &[String])

}

fn perf_warm(args: &[String]) -> Result<()> {
    let mut query_iterations = 100usize;
    let mut connection_iterations = 20usize;
    let mut cursor = 0usize;
    while cursor < args.len() {
        match args[cursor].as_str() {
            "--iterations" => {
                cursor += 1;
                let value = args
                    .get(cursor)
                    .ok_or_else(|| anyhow!("--iterations requires a value"))?;
                query_iterations = value
                    .parse()
                    .with_context(|| format!("parse --iterations value {value:?}"))?;
            }
            "--connections" => {
                cursor += 1;
                let value = args
                    .get(cursor)
                    .ok_or_else(|| anyhow!("--connections requires a value"))?;
                connection_iterations = value
                    .parse()
                    .with_context(|| format!("parse --connections value {value:?}"))?;
            }
            other => bail!("unknown perf warm flag: {other}"),
        }
        cursor += 1;
    }
    if query_iterations == 0 {
        bail!("--iterations must be greater than zero");
    }
    if connection_iterations == 0 {
        bail!("--connections must be greater than zero");
    }

    let mut operations = Vec::new();
    operations.push(capture_operation(
        "warm_process_preload",
        "Warm runtime and representative extension artifacts before steady-state workloads.",
        "existing",
        "warm",
        "process_cache",
        "not_a_query",
        "runtime_and_extension_preload",
        "operation.total",
        || {
            Pglite::preload()?;
            Pglite::preload_extensions([extensions::VECTOR])
        },
    )?);
    operations.push(capture_operation(
        "warm_direct_repeated_scalar_queries",
        "Repeated direct API scalar extended-protocol queries on one already-open temporary database.",
        "warm_after_preload",
        "warm",
        "long_lived_temporary_direct_root",
        "steady_state_queries",
        "direct_select_with_bind",