swift 5.1.4 on Amazon Linux 2 ``` Foundation.JSONCoding ----------------------------- string, cold: 25724953 (ns) string, warm: 370171 (ns) json, cold: 25843952 (ns) json, warm: 423885 (ns) ----------------------------- PureSwiftJSONCoding ----------------------------- string, cold: 23219984 (ns) string, warm: 372525 (ns) json, cold: 23525811 (ns) json, warm: 390062 (ns) ----------------------------- ``` boot speedup: 8-10% (not linking `Foundation`, statically linking PureSwiftJSONCoding) json warm speedup: 8% should be more with larger json payloads.