# `mix bench.check`
[🔗](https://github.com/andreasronge/ptc_runner/blob/main/lib/mix/tasks/bench.check.ex#L1)

Checks deterministic PTC-Lisp eval metrics against a committed baseline.

    mix bench.check
    mix bench.check --write-baseline

This task gates `eval_reductions` collected from the sandbox child process.
Child `memory_bytes` and wall-clock duration are reported as informational
metrics; memory regressions are covered by the release soak tests.

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*Consult [api-reference.md](api-reference.md) for complete listing*