{
  "date": "2026-10-02",
  "version": "0.2.5",
  "scope": "Isolated DiscReveal production duplicate-search core vs Czkawka CLI. Neither graphical interface included. Not a benchmark of the complete portable app.",
  "cpu": "Intel Core i7-6700K, 4 cores / 8 logical processors",
  "drive": "SAMSUNG HD503HI SATA HDD",
  "cache": "Warm Windows file cache; application caches disabled in both tools",
  "aggregation": "One untimed warm-up and five measured runs per tool and workload, alternating tool order; median process wall time including startup and JSON result export.",
  "discReveal": {
    "workers": 1,
    "algorithm": "Size, 24 KiB start/middle/end sample, adaptive complete-content fingerprint, exact byte confirmation",
    "build": "Release opt-level=s, LTO, codegen-units=1, panic=abort; extracted production core, hardware stub matching physical test drive; no Tauri events or GUI"
  },
  "czkawka": {
    "version": "12.0.2",
    "algorithm": "HASH/BLAKE3, default thread count",
    "arguments": "dup -d FIXTURE -m MIN_BYTES -s HASH -t BLAKE3 -H -D NONE -C RESULTS.json -N -M -W",
    "download": "https://github.com/qarmin/czkawka/releases/download/12.0.2/windows_czkawka_cli.exe",
    "sha256": "eb7c2009d2dd49cf5202acbd65370caece0a3f819b9515e727cedb1ec088ed1a"
  },
  "sourceHashes": {
    "src-tauri/src/duplicates.rs": "771a57aa75990b04ad10109cf7aa78a937368c03dea71c64193fbbd35b7bc17d",
    "src-tauri/src/scan.rs": "2606395e5186d064de60fca2f554ceb5b6859c502dd304c895353831731469f3",
    "src-tauri/src/scan_directory.rs": "6f39ba39514157b86e0766a5a97c80bae08f03711836f1d310e45a8888ff6230"
  },
  "workloads": [
    {
      "name": "shared-headers",
      "times": {
        "discReveal": [
          69.45640000000003,
          86.56790000000001,
          76.03140000000008,
          70.82029999999986,
          71.37879999999996
        ],
        "czkawka": [
          235.61110000000002,
          339.8941,
          190.31909999999993,
          193.10969999999998,
          191.95339999999987
        ]
      },
      "medians": {
        "discReveal": 71.37879999999996,
        "czkawka": 193.10969999999998
      },
      "correctness": "Both tools returned all and only the known duplicate groups",
      "files": 512,
      "fileBytes": 524288,
      "groups": 64,
      "extraCopies": 128,
      "minimumBytes": 0,
      "pattern": "All bytes zero except final 4 bytes containing a group number; 64 groups of three copies, 320 unique files."
    },
    {
      "name": "sample-collisions",
      "times": {
        "discReveal": [
          395.19849999999997,
          442.00940000000037,
          392.1252000000004,
          381.6931000000004,
          386.5565000000006
        ],
        "czkawka": [
          354.40549999999985,
          359.5555999999997,
          353.77140000000054,
          334.3580000000002,
          355.15340000000015
        ]
      },
      "medians": {
        "discReveal": 392.1252000000004,
        "czkawka": 354.40549999999985
      },
      "correctness": "Both tools returned all and only the known duplicate groups",
      "files": 60,
      "fileBytes": 8388608,
      "groups": 20,
      "extraCopies": 40,
      "minimumBytes": 0,
      "pattern": "All bytes zero except 4 bytes at offset 2097152 containing a group number; 20 groups of three copies."
    },
    {
      "name": "large-identical-copies",
      "times": {
        "discReveal": [
          76.51760000000013,
          75.52149999999983,
          78.32440000000042,
          95.98179999999957,
          71.61430000000018
        ],
        "czkawka": [
          172.23260000000028,
          193.44989999999962,
          189.9920000000002,
          237.79170000000067,
          191.89869999999974
        ]
      },
      "medians": {
        "discReveal": 76.51760000000013,
        "czkawka": 191.89869999999974
      },
      "correctness": "Both tools returned all and only the known duplicate groups",
      "files": 12,
      "fileBytes": 16777216,
      "groups": 1,
      "extraCopies": 11,
      "minimumBytes": 10485760,
      "pattern": "Every byte 0x41; twelve distinct physical files with identical content."
    },
    {
      "name": "filtered-tree",
      "times": {
        "discReveal": [
          15.414799999999559,
          15.419200000000274,
          15.494899999999689,
          15.738199999999779,
          15.762899999999718
        ],
        "czkawka": [
          87.50080000000071,
          87.1252000000004,
          88.4372999999996,
          87.67389999999978,
          88.76140000000123
        ]
      },
      "medians": {
        "discReveal": 15.494899999999689,
        "czkawka": 87.67389999999978
      },
      "correctness": "Both tools returned all and only the known duplicate groups",
      "files": 6016,
      "groups": 0,
      "extraCopies": 0,
      "minimumBytes": 10485760,
      "pattern": "6000 short text files in 60 folders; 16 files of 12582912 bytes, zeros except unique group number in last 4 bytes."
    }
  ],
  "previousCore": {
    "version": "0.2.4",
    "workers": 16,
    "aggregation": "One warm-up, three alternating measured runs; core time excludes process startup/export.",
    "workloads": [
      {
        "name": "shared-headers",
        "medians": {
          "baseline": 17724.3288,
          "optimized": 60.8461
        },
        "runs": {
          "baseline": [
            {
              "analyzeMs": 17493.4139,
              "bytes": 268435456,
              "candidates": 512,
              "copies": 128,
              "files": 512,
              "groups": 64,
              "totalMs": 17494.1441,
              "walkMs": 0.7299
            },
            {
              "analyzeMs": 17723.5822,
              "bytes": 268435456,
              "candidates": 512,
              "copies": 128,
              "files": 512,
              "groups": 64,
              "totalMs": 17724.3288,
              "walkMs": 0.7463
            },
            {
              "analyzeMs": 18042.051199999998,
              "bytes": 268435456,
              "candidates": 512,
              "copies": 128,
              "files": 512,
              "groups": 64,
              "totalMs": 18043.4727,
              "walkMs": 1.4212
            }
          ],
          "optimized": [
            {
              "analyzeMs": 59.0558,
              "bytes": 268435456,
              "candidates": 512,
              "copies": 128,
              "files": 512,
              "groups": 64,
              "totalMs": 59.693000000000005,
              "walkMs": 0.6367999999999999
            },
            {
              "analyzeMs": 66.2888,
              "bytes": 268435456,
              "candidates": 512,
              "copies": 128,
              "files": 512,
              "groups": 64,
              "totalMs": 66.9402,
              "walkMs": 0.6511
            },
            {
              "analyzeMs": 60.2122,
              "bytes": 268435456,
              "candidates": 512,
              "copies": 128,
              "files": 512,
              "groups": 64,
              "totalMs": 60.8461,
              "walkMs": 0.6336
            }
          ]
        }
      },
      {
        "name": "sample-collisions",
        "medians": {
          "baseline": 736.4323,
          "optimized": 353.383
        },
        "runs": {
          "baseline": [
            {
              "analyzeMs": 746.4375,
              "bytes": 503316480,
              "candidates": 60,
              "copies": 40,
              "files": 60,
              "groups": 20,
              "totalMs": 746.7951,
              "walkMs": 0.3572
            },
            {
              "analyzeMs": 734.697,
              "bytes": 503316480,
              "candidates": 60,
              "copies": 40,
              "files": 60,
              "groups": 20,
              "totalMs": 734.9046999999999,
              "walkMs": 0.2074
            },
            {
              "analyzeMs": 736.2225,
              "bytes": 503316480,
              "candidates": 60,
              "copies": 40,
              "files": 60,
              "groups": 20,
              "totalMs": 736.4323,
              "walkMs": 0.2094
            }
          ],
          "optimized": [
            {
              "analyzeMs": 382.74039999999997,
              "bytes": 503316480,
              "candidates": 60,
              "copies": 40,
              "files": 60,
              "groups": 20,
              "totalMs": 383.1391,
              "walkMs": 0.3983
            },
            {
              "analyzeMs": 346.7106,
              "bytes": 503316480,
              "candidates": 60,
              "copies": 40,
              "files": 60,
              "groups": 20,
              "totalMs": 347.0641,
              "walkMs": 0.3531
            },
            {
              "analyzeMs": 353.2007,
              "bytes": 503316480,
              "candidates": 60,
              "copies": 40,
              "files": 60,
              "groups": 20,
              "totalMs": 353.383,
              "walkMs": 0.182
            }
          ]
        }
      },
      {
        "name": "large-identical-copies",
        "medians": {
          "baseline": 85.9225,
          "optimized": 60.5425
        },
        "runs": {
          "baseline": [
            {
              "analyzeMs": 85.5971,
              "bytes": 201326592,
              "candidates": 12,
              "copies": 11,
              "files": 12,
              "groups": 1,
              "totalMs": 85.7349,
              "walkMs": 0.1374
            },
            {
              "analyzeMs": 86.549,
              "bytes": 201326592,
              "candidates": 12,
              "copies": 11,
              "files": 12,
              "groups": 1,
              "totalMs": 86.7709,
              "walkMs": 0.2215
            },
            {
              "analyzeMs": 85.7278,
              "bytes": 201326592,
              "candidates": 12,
              "copies": 11,
              "files": 12,
              "groups": 1,
              "totalMs": 85.9225,
              "walkMs": 0.1942
            }
          ],
          "optimized": [
            {
              "analyzeMs": 61.1021,
              "bytes": 201326592,
              "candidates": 12,
              "copies": 11,
              "files": 12,
              "groups": 1,
              "totalMs": 61.348800000000004,
              "walkMs": 0.24630000000000002
            },
            {
              "analyzeMs": 60.003,
              "bytes": 201326592,
              "candidates": 12,
              "copies": 11,
              "files": 12,
              "groups": 1,
              "totalMs": 60.1404,
              "walkMs": 0.1371
            },
            {
              "analyzeMs": 60.4089,
              "bytes": 201326592,
              "candidates": 12,
              "copies": 11,
              "files": 12,
              "groups": 1,
              "totalMs": 60.5425,
              "walkMs": 0.1332
            }
          ]
        }
      },
      {
        "name": "filtered-tree",
        "medians": {
          "baseline": 636.1857,
          "optimized": 6.644299999999999
        },
        "runs": {
          "baseline": [
            {
              "analyzeMs": 624.7192,
              "bytes": 201403992,
              "candidates": 16,
              "copies": 0,
              "files": 6016,
              "groups": 0,
              "totalMs": 631.1591,
              "walkMs": 6.4392
            },
            {
              "analyzeMs": 646.8512,
              "bytes": 201403992,
              "candidates": 16,
              "copies": 0,
              "files": 6016,
              "groups": 0,
              "totalMs": 659.9382,
              "walkMs": 13.0864
            },
            {
              "analyzeMs": 629.6543,
              "bytes": 201403992,
              "candidates": 16,
              "copies": 0,
              "files": 6016,
              "groups": 0,
              "totalMs": 636.1857,
              "walkMs": 6.5310999999999995
            }
          ],
          "optimized": [
            {
              "analyzeMs": 1.8443,
              "bytes": 201403992,
              "candidates": 16,
              "copies": 0,
              "files": 6016,
              "groups": 0,
              "totalMs": 6.5203,
              "walkMs": 4.6757
            },
            {
              "analyzeMs": 1.9735,
              "bytes": 201403992,
              "candidates": 16,
              "copies": 0,
              "files": 6016,
              "groups": 0,
              "totalMs": 6.8434,
              "walkMs": 4.8696
            },
            {
              "analyzeMs": 1.8739,
              "bytes": 201403992,
              "candidates": 16,
              "copies": 0,
              "files": 6016,
              "groups": 0,
              "totalMs": 6.644299999999999,
              "walkMs": 4.7701
            }
          ]
        }
      }
    ]
  },
  "realFolder": {
    "description": "XAMPP installation on Samsung 860 EVO SATA SSD; warm OS cache, app cache off, no UI",
    "minimumBytes": 10485760,
    "files": 199013,
    "candidates": 46,
    "groups": 14,
    "extraCopies": 16,
    "medians": {
      "baseline": 1993.9386,
      "optimized": 1870.8898000000002
    },
    "runs": [
      {
        "engine": "optimized",
        "totalMs": 2106.9407,
        "walkMs": 1921.754,
        "analyzeMs": 185.18589999999998
      },
      {
        "engine": "baseline",
        "totalMs": 1993.9386,
        "walkMs": 1776.6246999999998,
        "analyzeMs": 217.31300000000002
      },
      {
        "engine": "baseline",
        "totalMs": 1869.5132,
        "walkMs": 1669.354,
        "analyzeMs": 200.15849999999998
      },
      {
        "engine": "optimized",
        "totalMs": 1870.8898000000002,
        "walkMs": 1667.4594,
        "analyzeMs": 203.4297
      },
      {
        "engine": "optimized",
        "totalMs": 1838.1996000000001,
        "walkMs": 1639.6348999999998,
        "analyzeMs": 198.564
      },
      {
        "engine": "baseline",
        "totalMs": 2010.7694999999999,
        "walkMs": 1815.9557,
        "analyzeMs": 194.813
      }
    ]
  },
  "limitations": [
    "Synthetic targeted workloads, not a representative collection of user documents or media.",
    "Warm-cache measurements do not establish physical HDD seek performance or cold-cache speed.",
    "Only Czkawka CLI compared; no claim about all competing duplicate finders.",
    "Results vary and overlap across repeat tests; the collision case remains slower than Czkawka.",
    "Exact expected duplicate groups and paths verified on every run; no deletion performed."
  ]
}