phpbench.json

{
    "$schema": "vendor/phpbench/phpbench/phpbench.schema.json",
    "runner.bootstrap": "tests/Benchmark/bootstrap.php",
    "runner.path": "tests/Benchmark",
    "runner.file_pattern": "*Bench.php",
    "runner.iterations": 5,
    "runner.revs": 1000,
    "runner.warmup": 2,
    "runner.time_unit": "microseconds",
    "runner.output_mode": "throughput",
    "runner.php_config": {
        "extension": "ext/modules/stub.so"
    },
    "storage.xml_storage_path": ".phpbench/storage",
    "report.generators": {
        "summary": {
            "extends": "default"
        },
        "delta": {
            "extends": "default"
        },
        "aggregate": {
            "generator": "expression",
            "cols": ["benchmark", "subject", "set", "revs", "its", "mem_peak", "mode", "rstdev"],
            "baseline_expressions": {
                "mem_peak": "(coalesce(first(baseline_mem_peak), first(result_mem_peak)) as memory) ~ \" \" ~ percent_diff(coalesce(first(baseline_mem_peak), first(result_mem_peak)), first(result_mem_peak))"
            }
        }
    }
}