{
    "schema_version": 1,
    "license": "CC BY 4.0",
    "citation": "Kuzeyhan Demir, ASAMB, Gzip levels 1, 6 and 9 on mixed web payloads, measurement run 2026-07-22T15:23:56+00:00",
    "environment": {
        "generated_at": "2026-07-22T15:23:56+00:00",
        "php_version": "8.4.23",
        "php_sapi": "cli",
        "os": "Linux 4.18.0-553.85.1.el8_10.x86_64",
        "architecture": "x86_64",
        "cpu": "AMD EPYC-Rome Processor",
        "memory": "15.02 GiB host total",
        "opcache_cli": "0",
        "memory_limit": "1024M",
        "extensions": [
            "json",
            "openssl",
            "zlib",
            "mbstring",
            "pdo_sqlite"
        ],
        "timezone": "UTC",
        "clock": "hrtime(true)",
        "rounds": 7
    },
    "study": {
        "slug": "gzip-compression-levels",
        "iterations_per_sample": 45,
        "rounds": 7,
        "winner": "Level 1",
        "slowest": "Level 9",
        "spread_percent": 554.18,
        "variants": {
            "Level 1": {
                "median_ns_per_op": 380097.22,
                "p25_ns_per_op": 376600.09,
                "p75_ns_per_op": 394073.93,
                "ops_per_second": 2630.91,
                "samples_ns_per_op": [
                    402154,
                    548618.29,
                    379149.42,
                    380097.22,
                    374050.76,
                    373648.2,
                    385993.87
                ],
                "extra": {
                    "output_bytes": 9532
                }
            },
            "Level 6": {
                "median_ns_per_op": 927816.67,
                "p25_ns_per_op": 914775.28,
                "p75_ns_per_op": 933675.01,
                "ops_per_second": 1077.8,
                "samples_ns_per_op": [
                    962830.24,
                    918766.78,
                    930970.82,
                    936379.2,
                    906446.73,
                    910783.78,
                    927816.67
                ],
                "extra": {
                    "output_bytes": 6784
                }
            },
            "Level 9": {
                "median_ns_per_op": 2486535.93,
                "p25_ns_per_op": 2461003.2,
                "p75_ns_per_op": 2611945.68,
                "ops_per_second": 402.17,
                "samples_ns_per_op": [
                    2710527.64,
                    2839077.18,
                    2463233.71,
                    2486535.93,
                    2450056.07,
                    2458772.69,
                    2513363.71
                ],
                "extra": {
                    "output_bytes": 6369
                }
            }
        }
    }
}