HushLine ships four independent cores behind one command contract. This page measures what each one costs so the choice can be made on data — not on preference.
Every core runs the identical command hushline mute -- cat <workload>. The workload is a generated 20,000-line (~1.04 MB) log mixing ANSI escapes, sk-… and AKIA… secrets, and doubled whitespace, so each core exercises ANSI stripping, redaction, and the silence rules on the same bytes. The harness records the wall-clock median of seven repetitions per core and verifies all four cores produce byte-identical output before reporting any timing.
11th Gen Intel Core i5-11600K @ 3.90 GHz (12 logical cores), 20,000-line workload, 7 repetitions, median wall-clock time. Cross-core output parity: identical.
| Core | Median | Min | Throughput | Relative | Parity |
|---|---|---|---|---|---|
| Rust | 5.07 ms | 4.91 ms | 204.7 MB/s | 1.0× | Byte-identical |
| Go | 12.85 ms | 11.48 ms | 80.7 MB/s | 2.5× | Byte-identical |
| Node | 52.94 ms | 46.61 ms | 19.6 MB/s | 10.4× | Byte-identical |
| Python | 59.85 ms | 57.10 ms | 17.3 MB/s | 11.8× | Byte-identical |
“Relative” is the median time divided by the fastest core's median. These figures are hardware- and workload-specific, not universal performance claims. Reproduce them from the public repository before making deployment decisions.