{
  "scope": "Assets + block facts + behaviours loader only; excludes full startup",
  "resources": ".local/horizon-client/26.3",
  "repeats": 5,
  "comparison": "historical cf837118 release binary",
  "reference_binary": "target/release/examples/shared_json_startup_profile-cf837118",
  "metrics": {
    "baseline": {
      "phase_ms": {
        "median": 1462.003,
        "samples": [
          1639.999,
          1506.864,
          1429.844,
          1462.003,
          1346.061
        ]
      },
      "total_ms": {
        "median": 1922.795,
        "samples": [
          3383.516,
          1990.554,
          1912.354,
          1922.795,
          1777.912
        ]
      },
      "cpu_ms": {
        "median": 1961.459,
        "samples": [
          2419.086,
          2021.457,
          1951.587,
          1961.459,
          1839.984
        ]
      },
      "peak_rss_kib": {
        "median": 820912,
        "samples": [
          819956,
          821052,
          820912,
          821792,
          820424
        ]
      }
    },
    "pr607": {
      "phase_ms": {
        "median": 486.715,
        "samples": [
          460.738,
          442.013,
          623.053,
          486.715,
          550.652
        ]
      },
      "total_ms": {
        "median": 948.089,
        "samples": [
          923.057,
          935.599,
          1109.64,
          948.089,
          1052.546
        ]
      },
      "cpu_ms": {
        "median": 968.424,
        "samples": [
          928.489,
          946.932,
          1128.431,
          968.424,
          1079.642
        ]
      },
      "peak_rss_kib": {
        "median": 351796,
        "samples": [
          351796,
          351844,
          351536,
          351532,
          351988
        ]
      }
    },
    "cf837118": {
      "phase_ms": {
        "median": 474.268,
        "samples": [
          443.122,
          474.268,
          520.497,
          433.525,
          532.058
        ]
      },
      "total_ms": {
        "median": 945.87,
        "samples": [
          934.722,
          945.87,
          1006.539,
          888.201,
          1032.6
        ]
      },
      "cpu_ms": {
        "median": 953.668,
        "samples": [
          941.957,
          953.668,
          1029.122,
          903.574,
          1065.025
        ]
      },
      "peak_rss_kib": {
        "median": 274476,
        "samples": [
          273448,
          274844,
          274476,
          274556,
          274252
        ]
      }
    },
    "current": {
      "phase_ms": {
        "median": 445.924,
        "samples": [
          472.165,
          427.797,
          419.288,
          445.924,
          524.211
        ]
      },
      "total_ms": {
        "median": 999.669,
        "samples": [
          999.669,
          892.616,
          1051.427,
          940.595,
          1112.158
        ]
      },
      "cpu_ms": {
        "median": 1001.24,
        "samples": [
          1001.24,
          887.874,
          1051.732,
          951.495,
          1132.208
        ]
      },
      "peak_rss_kib": {
        "median": 267604,
        "samples": [
          267716,
          267920,
          267448,
          267604,
          267344
        ]
      }
    }
  },
  "builds": {
    "current": "release example built at cf837118 + current uncommitted delta in PR #607 worktree",
    "historical": "release example built at exact cf837118 commit, with same Cargo release profile and shared dependency target"
  },
  "mode_commits": {
    "baseline": "independent loader algorithm at e422bd13, executed in current binary",
    "pr607": "shared early construction algorithm at a01d47f2, executed in current binary",
    "cf837118": "exact historical binary at cf837118, deferred mode",
    "current": "current PR worktree, deferred mode with interned strings"
  },
  "limitations": "Loader-only (Assets + BlockFacts + Behaviours), no full client startup or first-frame timing. Same release profile but different compilation contexts for historical binary; hardware activity and cache warmth vary. CPU and elapsed differences between cf837118 and current are mixed and may be noise. Peak RSS is whole-process Linux ru_maxrss."
}