{
  "command": "node /tmp/to-24264-proof2/benchmark.mjs /home/ubuntu/wt/pr-24264 /tmp/to-24264-proof2",
  "revisions": {
    "base": "22dc1dabc6d3b1616d0fa5017268c086a77887bc",
    "head": "0350d612d92ccad3c10e114fe87aeb09fa8168a7"
  },
  "runtime": "v26.12.1",
  "os": {
    "type": "Linux",
    "release": "6.1.102",
    "arch": "x64"
  },
  "cpu": "19/01",
  "cpuDetails": "Architecture:                         x86_64\nCPU op-mode(s):                       32-bit, 64-bit\nAddress sizes:                        48 bits physical, 48 bits virtual\nByte Order:                           Little Endian\nCPU(s):                               4\nOn-line CPU(s) list:                  0-3\nVendor ID:                            AuthenticAMD\nModel name:                           19/01\nCPU family:                           25\nModel:                                1\nThread(s) per core:                   1\nCore(s) per socket:                   4\nSocket(s):                            1\nStepping:                             1\nBogoMIPS:                             5489.67\nFlags:                                fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw topoext perfctr_core invpcid_single ssbd ibrs ibpb stibp vmmcall fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves clzero xsaveerptr wbnoinvd arat npt lbrv nrip_save tsc_scale vmcb_clean flushbyasid pausefilter pfthreshold v_vmsave_vmload vgif umip pku ospke vaes vpclmulqdq rdpid fsrm arch_capabilities\nVirtualization:                       AMD-V\nHypervisor vendor:                    KVM\nVirtualization type:                  full\nL1d cache:                            64 KiB (2 instances)\nL1i cache:                            64 KiB (2 instances)\nL2 cache:                             1 MiB (2 instances)\nL3 cache:                             16 MiB (1 instance)\nNUMA node(s):                         1\nNUMA node0 CPU(s):                    0-3\nVulnerability Gather data sampling:   Not affected\nVulnerability Itlb multihit:          Not affected\nVulnerability L1tf:                   Not affected\nVulnerability Mds:                    Not affected\nVulnerability Meltdown:               Not affected\nVulnerability Mmio stale data:        Not affected\nVulnerability Reg file data sampling: Not affected\nVulnerability Retbleed:               Not affected\nVulnerability Spec rstack overflow:   Mitigation; safe RET, no microcode\nVulnerability Spec store bypass:      Mitigation; Speculative Store Bypass disabled via prctl\nVulnerability Spectre v1:             Mitigation; usercopy/swapgs barriers and __user pointer sanitization\nVulnerability Spectre v2:             Mitigation; Retpolines; IBPB conditional; IBRS_FW; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected\nVulnerability Srbds:                  Not affected\nVulnerability Tsx async abort:        Not affected\n",
  "logicalCpus": 4,
  "N": 10000,
  "replacements": 500,
  "warmupBatchesPerRevisionPerMode": 1,
  "measuredBatches": 5,
  "timing": {
    "reducerOnly": {
      "base": {
        "batchesMs": [
          78.75698499999999,
          64.47118500000033,
          68.66176900000028,
          71.31708299999991,
          76.71881099999973
        ],
        "medianMs": 71.31708299999991
      },
      "head": {
        "batchesMs": [
          16.098503000000164,
          13.291674999999486,
          16.381703999999445,
          41.04032199999983,
          17.645715999999993
        ],
        "medianMs": 16.381703999999445
      }
    },
    "reducerPlusEquality": {
      "base": {
        "batchesMs": [
          133.27583200000026,
          133.80300199999965,
          142.80489500000022,
          132.0157079999999,
          145.99843899999996
        ],
        "medianMs": 133.80300199999965
      },
      "head": {
        "batchesMs": [
          37.31488999999965,
          37.75287300000036,
          30.22769999999946,
          30.883780000000115,
          33.79514500000005
        ],
        "medianMs": 33.79514500000005
      }
    }
  },
  "counts": {
    "base": {
      "itemOrdinal": 19998000,
      "rowPosition": 4999500,
      "equalityPreviousTurnSlots": 5000000,
      "equalityNextTurnSlots": 5000000,
      "equalityPreviousVisibleSlots": 5000000,
      "equalityNextVisibleSlots": 5000000
    },
    "head": {
      "itemOrdinal": 1000,
      "rowPosition": 500,
      "equalityPreviousTurnSlots": 500,
      "equalityNextTurnSlots": 500,
      "equalityPreviousVisibleSlots": 500,
      "equalityNextVisibleSlots": 500
    }
  },
  "equivalence": {
    "reducerEvents": 509,
    "allStreamingEvents": 500,
    "adversarialHistorySnapshots": 14,
    "pairChecks": 392,
    "hintedVersusHintFree": "PASS (both revisions, same exact pairs)",
    "crossRevisionDecisions": "PASS",
    "quietAtomNullResetResume": "PASS (both revisions, actual AtomRegistry)"
  },
  "sink": 240240,
  "disk": {
    "startBytes": 5608906752,
    "endBytes": 5602140160
  },
  "visualMatrix": [],
  "limitations": [
    "Host microbenchmark; no device, frame-rate, render or end-to-end latency claims.",
    "O(N) array copies remain; searches remain worst-case O(N).",
    "Mobile primarily benefits from reducer; web/desktop also use structure equality.",
    "Synthetic newest-item replacements; timing excludes fixture/event construction, equivalence checks, counting and module load.",
    "Numeric slot accessors installed on both original arrays after reducer; WeakMap hint identities preserved. Ordering counts exclude equality.",
    "Workspace dependencies used for both exact extracted source revisions."
  ],
  "friction": []
}