{
  "date": "2026-09-20",
  "scope": "Proxmox host-root ext4 filesystem probes, separate from VM data and Kubernetes PVC benchmarks",
  "method": {
    "file_bytes": 1073741824,
    "sequential_block_bytes": 1048576,
    "write_fsync_interval_bytes": 67108864,
    "random_write_bytes": 8192,
    "random_write_operations": 128,
    "random_write_durability": "fsync after every operation",
    "per_file_cache_eviction": "POSIX_FADV_DONTNEED after flush and in 64MiB intervals; no global cache drop",
    "host_deadline_seconds": 120
  },
  "limitations": [
    "A bounded 1GiB pass does not establish steady-state flash-cache exhaustion or maximum parallel throughput.",
    "Host root disks and actual VM data tiers differ; only SFF worker data shares the root physical drive.",
    "Physical disk byte counters include unrelated production background activity.",
    "15-second preflight CPU samples are not peak demand or failure-capacity guarantees.",
    "Host memory available is not guest application memory; fixed-memory VMs can later touch currently unused allocations."
  ],
  "hosts": [
    {
      "ip": "192.168.10.14",
      "name": "Threadripper",
      "cpu_model": "AMD Ryzen Threadripper 2950X 16-Core Processor",
      "logical_cpus": 32,
      "active_guest_vcpus": 30,
      "ram_GiB": 125.67435836791992,
      "available_GiB": 18.316829681396484,
      "active_guest_memory_GiB": 100.0,
      "cpu_busy_pct": 33.78573740425073,
      "cpu_iowait_pct": 0.21577300679684971,
      "cpu_steal_pct": 0.0,
      "preflight_started_at": "2026-09-20T17:52:41.566438+00:00",
      "guest_summary": [
        {
          "vmid": 100,
          "type": "qemu",
          "status": "running",
          "name": "talos-prod-cluster-v2-gpu-workers-jxfkdr",
          "cpu": 0.41209962658389,
          "maxcpu": 30,
          "mem": 107611594752,
          "maxmem": 107374182400,
          "configuration": {
            "name": "talos-prod-cluster-v2-gpu-workers-jxfkdr",
            "memory": "102400",
            "balloon": "0",
            "cores": "30",
            "sockets": "1",
            "cpu": "host"
          }
        },
        {
          "vmid": 102,
          "type": "qemu",
          "status": "stopped",
          "name": "kali-linux",
          "cpu": 0,
          "maxcpu": 4,
          "mem": 0,
          "maxmem": 12582912000,
          "configuration": {
            "name": "kali-linux",
            "memory": "12000",
            "balloon": "8000",
            "cores": "4",
            "sockets": "1",
            "cpu": "x86-64-v2-AES"
          }
        }
      ],
      "root_disk": "sda",
      "path": "PNY CS900 root SSD; excludes enterprise mirror and GPU NVMe tiers",
      "write_MBs": 359.6760398131046,
      "read_MBs": 406.5248369629984,
      "sync_write_8KiB_p50_ms": 1.9898469909094274,
      "sync_write_8KiB_p95_ms": 2.177661983296275,
      "sync_write_8KiB_p99_ms": 2.313199103809893,
      "sequential_physical_read_bytes": 1075052544,
      "benchmark_started_at": "2026-09-20T17:56:17.453838+00:00",
      "benchmark_finished_at": "2026-09-20T17:56:23.348042+00:00",
      "cleanup_verified": true,
      "errors": [],
      "postflight_smart": [
        {
          "device": "sda",
          "passed": true,
          "temperature_C": 33,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": []
        },
        {
          "device": "sdb",
          "passed": true,
          "temperature_C": 20,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": [
            {
              "id": 5,
              "name": "Reallocated_Sector_Ct",
              "raw": {
                "value": 0,
                "string": "0"
              }
            }
          ]
        },
        {
          "device": "sdc",
          "passed": true,
          "temperature_C": 22,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": [
            {
              "id": 5,
              "name": "Reallocated_Sector_Ct",
              "raw": {
                "value": 0,
                "string": "0"
              }
            }
          ]
        },
        {
          "device": "nvme0n1",
          "passed": true,
          "temperature_C": 54,
          "media_errors": 0,
          "critical_warning": 0,
          "ata_indicators": []
        },
        {
          "device": "nvme1n1",
          "passed": true,
          "temperature_C": 54,
          "media_errors": 0,
          "critical_warning": 0,
          "ata_indicators": []
        }
      ]
    },
    {
      "ip": "192.168.10.16",
      "name": "Dell",
      "cpu_model": "Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz",
      "logical_cpus": 6,
      "active_guest_vcpus": 6,
      "ram_GiB": 38.97224044799805,
      "available_GiB": 7.437259674072266,
      "active_guest_memory_GiB": 30.0,
      "cpu_busy_pct": 41.40841813135985,
      "cpu_iowait_pct": 1.1332099907493063,
      "cpu_steal_pct": 0.0,
      "preflight_started_at": "2026-09-20T17:52:41.483110+00:00",
      "guest_summary": [
        {
          "vmid": 100,
          "type": "qemu",
          "status": "running",
          "name": "talos-prod-cluster-v2-dell-workers-2jfrb8",
          "cpu": 0.465274666020644,
          "maxcpu": 6,
          "mem": 31062364160,
          "maxmem": 32212254720,
          "configuration": {
            "name": "talos-prod-cluster-v2-dell-workers-2jfrb8",
            "memory": "30720",
            "balloon": "0",
            "cores": "6",
            "sockets": "1",
            "cpu": "host"
          }
        }
      ],
      "root_disk": "sdb",
      "path": "Apple root SSD; excludes Samsung SSD VM data tier",
      "write_MBs": 635.7481599074167,
      "read_MBs": 1926.2973655755006,
      "sync_write_8KiB_p50_ms": 7.177386491093785,
      "sync_write_8KiB_p95_ms": 9.50894400011748,
      "sync_write_8KiB_p99_ms": 10.834149899892509,
      "sequential_physical_read_bytes": 1073741824,
      "benchmark_started_at": "2026-09-20T17:56:17.355731+00:00",
      "benchmark_finished_at": "2026-09-20T17:56:20.542457+00:00",
      "cleanup_verified": true,
      "errors": [],
      "postflight_smart": [
        {
          "device": "sda",
          "passed": true,
          "temperature_C": 33,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": [
            {
              "id": 5,
              "name": "Reallocated_Sector_Ct",
              "raw": {
                "value": 0,
                "string": "0"
              }
            },
            {
              "id": 187,
              "name": "Uncorrectable_Error_Cnt",
              "raw": {
                "value": 0,
                "string": "0"
              }
            },
            {
              "id": 199,
              "name": "CRC_Error_Count",
              "raw": {
                "value": 8162,
                "string": "8162"
              }
            }
          ]
        },
        {
          "device": "sdb",
          "passed": true,
          "temperature_C": 36,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": [
            {
              "id": 5,
              "name": "Reallocated_Sector_Ct",
              "raw": {
                "value": 0,
                "string": "0"
              }
            },
            {
              "id": 197,
              "name": "Current_Pending_Sector",
              "raw": {
                "value": 0,
                "string": "0"
              }
            },
            {
              "id": 199,
              "name": "UDMA_CRC_Error_Count",
              "raw": {
                "value": 0,
                "string": "0"
              }
            }
          ]
        }
      ]
    },
    {
      "ip": "192.168.10.20",
      "name": "Shed Micro",
      "cpu_model": "Intel(R) Core(TM) i5-8500T CPU @ 2.10GHz",
      "logical_cpus": 6,
      "active_guest_vcpus": 4,
      "ram_GiB": 31.124744415283203,
      "available_GiB": 25.005516052246094,
      "active_guest_memory_GiB": 12.0,
      "cpu_busy_pct": 4.66263169692894,
      "cpu_iowait_pct": 0.19054023761488456,
      "cpu_steal_pct": 0.0,
      "preflight_started_at": "2026-09-20T17:52:41.369922+00:00",
      "guest_summary": [
        {
          "vmid": 100,
          "type": "qemu",
          "status": "running",
          "name": "talos-prod-cluster-v2-hp-micro-workers-pstbbd",
          "cpu": 0.0694411012616958,
          "maxcpu": 4,
          "mem": 4800806912,
          "maxmem": 12884901888,
          "configuration": {
            "name": "talos-prod-cluster-v2-hp-micro-workers-pstbbd",
            "memory": "12288",
            "balloon": "0",
            "cores": "4",
            "sockets": "1",
            "cpu": "host"
          }
        }
      ],
      "root_disk": "nvme0n1",
      "path": "SK hynix root NVMe; excludes PNY VM data tier",
      "write_MBs": 638.5990371105569,
      "read_MBs": 1159.8498179481585,
      "sync_write_8KiB_p50_ms": 1.0125505000360135,
      "sync_write_8KiB_p95_ms": 1.1411049999878742,
      "sync_write_8KiB_p99_ms": 1.1752210002669017,
      "sequential_physical_read_bytes": 1073741824,
      "benchmark_started_at": "2026-09-20T17:56:17.261298+00:00",
      "benchmark_finished_at": "2026-09-20T17:56:20.003731+00:00",
      "cleanup_verified": true,
      "errors": [],
      "postflight_smart": [
        {
          "device": "sda",
          "passed": true,
          "temperature_C": 33,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": []
        },
        {
          "device": "nvme0n1",
          "passed": true,
          "temperature_C": 39,
          "media_errors": 0,
          "critical_warning": 0,
          "ata_indicators": []
        }
      ]
    },
    {
      "ip": "192.168.10.21",
      "name": "HP SFF",
      "cpu_model": "Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz",
      "logical_cpus": 6,
      "active_guest_vcpus": 10,
      "ram_GiB": 62.607139587402344,
      "available_GiB": 8.141902923583984,
      "active_guest_memory_GiB": 52.0,
      "cpu_busy_pct": 39.25524556144801,
      "cpu_iowait_pct": 0.9453539312889094,
      "cpu_steal_pct": 0.0,
      "preflight_started_at": "2026-09-20T17:52:41.259099+00:00",
      "guest_summary": [
        {
          "vmid": 100,
          "type": "qemu",
          "status": "running",
          "name": "talos-prod-cluster-v2-hp-sff-workers-h76ncc",
          "cpu": 0.264930127998531,
          "maxcpu": 6,
          "mem": 43113689088,
          "maxmem": 42949672960,
          "configuration": {
            "name": "talos-prod-cluster-v2-hp-sff-workers-h76ncc",
            "memory": "40960",
            "balloon": "0",
            "cores": "6",
            "sockets": "1",
            "cpu": "host"
          }
        },
        {
          "vmid": 101,
          "type": "qemu",
          "status": "running",
          "name": "talos-prod-cluster-v2-control-planes-7mxjxv",
          "cpu": 0.21199380786374,
          "maxcpu": 4,
          "mem": 12395954176,
          "maxmem": 12884901888,
          "configuration": {
            "name": "talos-prod-cluster-v2-control-planes-7mxjxv",
            "memory": "12288",
            "balloon": "0",
            "cores": "4",
            "sockets": "1",
            "cpu": "host"
          }
        }
      ],
      "root_disk": "sdb",
      "path": "PNY root SSD; shares physical drive with worker VM, excludes separate control-plane SSD",
      "write_MBs": 83.10613731557248,
      "read_MBs": 401.34424849078806,
      "sync_write_8KiB_p50_ms": 2.3808350088074803,
      "sync_write_8KiB_p95_ms": 4.409085959196091,
      "sync_write_8KiB_p99_ms": 8.463542093522847,
      "sequential_physical_read_bytes": 1073741824,
      "benchmark_started_at": "2026-09-20T17:56:17.214536+00:00",
      "benchmark_finished_at": "2026-09-20T17:56:33.321896+00:00",
      "cleanup_verified": true,
      "errors": [],
      "postflight_smart": [
        {
          "device": "sda",
          "passed": true,
          "temperature_C": 33,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": []
        },
        {
          "device": "sdb",
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          "temperature_C": 33,
          "media_errors": null,
          "critical_warning": null,
          "ata_indicators": []
        }
      ]
    },
    {
      "ip": "192.168.10.22",
      "name": "HP Elite",
      "cpu_model": "13th Gen Intel(R) Core(TM) i5-13500T",
      "logical_cpus": 20,
      "active_guest_vcpus": 18,
      "ram_GiB": 30.58776092529297,
      "available_GiB": 3.953998565673828,
      "active_guest_memory_GiB": 26.0,
      "cpu_busy_pct": 22.456781914893618,
      "cpu_iowait_pct": 0.24268617021276595,
      "cpu_steal_pct": 0.0,
      "preflight_started_at": "2026-09-20T17:52:41.272510+00:00",
      "guest_summary": [
        {
          "vmid": 100,
          "type": "qemu",
          "status": "running",
          "name": "talos-prod-cluster-v2-hp-elite-workers-l5zlgr",
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          "mem": 25901973504,
          "maxmem": 25769803776,
          "configuration": {
            "name": "talos-prod-cluster-v2-hp-elite-workers-l5zlgr",
            "memory": "24576",
            "balloon": "0",
            "cores": "16",
            "sockets": "1",
            "cpu": "host"
          }
        },
        {
          "vmid": 101,
          "type": "lxc",
          "status": "running",
          "name": "proxmox-datacenter-manager",
          "cpu": 4.9844123031383e-05,
          "maxcpu": 2,
          "mem": 98430976,
          "maxmem": 2147483648,
          "configuration": {
            "hostname": "proxmox-datacenter-manager",
            "memory": "2048",
            "swap": "512",
            "cores": "2"
          }
        }
      ],
      "root_disk": "nvme1n1",
      "path": "WDC root NVMe; excludes Intel SSD VM data tier",
      "write_MBs": 638.203858352072,
      "read_MBs": 888.6898635308518,
      "sync_write_8KiB_p50_ms": 0.6068929797038436,
      "sync_write_8KiB_p95_ms": 0.8404740365222096,
      "sync_write_8KiB_p99_ms": 0.9099689777940512,
      "sequential_physical_read_bytes": 1075412992,
      "benchmark_started_at": "2026-09-20T17:56:17.216171+00:00",
      "benchmark_finished_at": "2026-09-20T17:56:20.184620+00:00",
      "cleanup_verified": true,
      "errors": [],
      "postflight_smart": [
        {
          "device": "nvme0n1",
          "passed": true,
          "temperature_C": 35,
          "media_errors": 0,
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          "ata_indicators": []
        },
        {
          "device": "nvme1n1",
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          "temperature_C": 47,
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          "critical_warning": 0,
          "ata_indicators": []
        }
      ]
    }
  ]
}