A local, real-time system monitor for Windows, built with .NET 10 / WPF. It shows CPU / RAM / per-disk / network / NPU / GPU0 / GPU1 utilization and temperatures on a single dark dashboard, plus network health (VPN detection, external IP + geolocation, host ping), persists every sample to SQLite, and includes basic report analytics.
繁體中文詳細說明請見下方 繁體中文 段落。
- Real-time dashboard (2 s refresh by default): CPU %, CPU temp (package + per-core), RAM, per-disk capacity + activity, per-NIC throughput, NPU, GPU0/GPU1 load + temp, NVMe/SSD temps — each metric with a live sparkline.
- Traffic-light status colors (green / amber / red / grey) on a dark, near-black theme; the accent color is reserved for sparklines.
- Network health: VPN connection detection, external IP + geolocation (ip-api.com), configurable host ping (latency + rolling uptime %).
- Persistence: every sample written to SQLite (WAL, single writer, batched flush), 7-day retention by default with periodic purge + incremental vacuum.
- Reports: pick a metric + range → server-side bucketed avg/max/min chart + data grid + CSV export.
- Bilingual Traditional Chinese / English with runtime switching; minimizes to the system tray.
- Standalone: no dependency on any external monitoring tool at runtime.
- Windows 10 / 11, .NET 10 runtime (or run the published framework-dependent build with the runtime installed).
- Administrator rights are required to read CPU / GPU / motherboard temperatures via LibreHardwareMonitor's ring0 driver (a UAC prompt appears on launch). Without elevation, those temps show
N/Awhile every other metric keeps working (graceful degradation).
Temperatures depend on what the underlying library can read on a given machine:
- CPU package / per-core temp: on some platforms — e.g. Intel Arrow Lake (Core Ultra 200 HX-series) — LibreHardwareMonitor 0.9.6 (and 0.9.7-pre) exposes the temperature sensor objects but never obtains a value, so they read
N/A. This was confirmed by reflection: the values are genuinely absent internally, not merely hidden. - Motherboard / chipset temp: often
N/Awhen the board's Super I/O / Embedded Controller is locked by the BIOS (common on laptops). - Intel integrated-GPU temp: frequently unavailable (load still reads correctly).
- GPU (NVIDIA/AMD) temps, NVMe/SSD temps, and all utilization / network / ping / IP metrics work normally.
dotnet build -c Debug
dotnet run -c Debug # UAC prompt (admin)
dotnet publish -c Release -r win-x64 --self-contained false -o publishrun-elevated.cmd self-elevates and runs --dump → --lhm → launches the dashboard, useful for a one-shot verification of temps and the sensor map.
PCMonitor.exe --dump # one-shot snapshot to console + last-dump.txt (no UI)
PCMonitor.exe --shot out.png # sample 6 s then screenshot the dashboard and exit
PCMonitor.exe --lhm # list all LHM hardware/sensors (incl. EC probe) -> lhm-sensors.txt
PCMonitor.exe --dbcount # print DB sample count + first/last timestamp
PCMonitor.exe --seedoutage # write 2 demo outage rows (verify the History window)
PCMonitor.exe --dbcountoutages # print outage row count
PCMonitor.exe --lang en # force language (auto/zh/en)Data (settings + SQLite DB + logs) lives in %LocalAppData%\PCMonitor\.
Unreachability is recorded as outage events: a host going down (after a configurable number of consecutive ping failures, default 3) opens a row with DownAt; recovering closes it with RecoveredAt + duration. Open the History window from the toolbar or the Connectivity card (its button also shows a 24 h outage count). Retention is configurable (default 30 days).
MIT — see LICENSE. Copyright (c) 2026 Henry Jia.
This project uses the following third-party components:
- LibreHardwareMonitorLib — Mozilla Public License 2.0 (MPL-2.0). Used as an unmodified NuGet assembly; per the MPL-2.0 this imposes no copyleft obligation on PCMonitor's own source, but the library's source is available at the link above and its license terms apply to the library itself. © LibreHardwareMonitor contributors.
- LiveCharts2 (LiveChartsCore.SkiaSharpView.WPF) — MIT.
- Entity Framework Core (Microsoft.EntityFrameworkCore.Sqlite) — MIT.
- CommunityToolkit.Mvvm — MIT.
- Microsoft.Extensions.DependencyInjection — MIT.
Issues and pull requests are welcome. Please keep the project standalone (no runtime dependency on external monitoring tools), and note that any change to hardware-sensor reading touches ring0 / driver code paths — test carefully and avoid guessing undocumented MSR/register layouts.
本機即時系統監控工具（.NET 10 / WPF）。集中顯示 CPU / RAM / 各磁碟 / 網路 / NPU / GPU0 / GPU1 的占用率與溫度，附網路健康資訊（VPN、外部 IP + 地理位置、網站 ping），所有樣本落 SQLite，內建基本報表分析。獨立運行，運行時不依賴任何外部監控工具。
- 即時儀表板（預設 2 秒刷新）：CPU%、CPU 溫度（封裝 + 逐核）、RAM、各磁碟容量與活動度、各網路卡吞吐、GPU0/GPU1 負載與溫度、NPU、NVMe/SSD 溫度，每個指標含即時 sparkline。
- 交通燈狀態色（綠 / 琥珀 / 紅 / 灰）於深色近黑主題；強調色僅保留給 sparkline。
- 網路狀態：VPN 連線偵測、外部 IP + 地理位置（ip-api.com）、預設主機 ping 延遲與可達率。
- 持久化：所有樣本寫入 SQLite（WAL、單寫者、批次），預設保留 7 天，定期 purge + incremental vacuum。
- 報表：選 metric + 範圍 → server-side 分桶 avg/max/min 圖表 + 資料表 + CSV 匯出。
- 雙語（繁中 / English，可即時切換）、收合系統匣常駐。
CPU 溫度、主機板溫度、部分感測器需透過 LibreHardwareMonitor 的 ring0 核心驅動（WinRing0 類）讀取硬體暫存器，只有系統管理員權限能載入該驅動。因此程式以 requireAdministrator 啟動，每次執行會跳 UAC 提示。
- 未獲管理員權限時，溫度類讀數會顯示 N/A，但 CPU%/RAM/磁碟/網路/GPU 負載（經 NVAPI）/ping/IP 仍可正常運作（graceful degradation）。
- anti-cheat 警告：WinRing0 類驅動在部分反作弊軟體（Vanguard、FACEIT 等）的封鎖清單上。若執行本程式時啟動某些遊戲，遊戲可能拒絕啟動。結束本程式（系統匣 → 退出）即卸載驅動。
- 部分主機板的 EC/SMBus 探測可能讓驅動載入較慢；本程式以背景緒 + 15 秒 watchdog 處理，逾時僅溫度顯示 N/A，不影響其餘監控與 UI。
溫度取決於底層函式庫在該機器能讀到什麼：
- CPU 封裝 / 逐核溫度：部分平台（如 Intel Arrow Lake / Core Ultra 200 HX 系列）在 LibreHardwareMonitor 0.9.6（與 0.9.7-pre）下，溫度感測器物件存在但從未取得值，故顯示 N/A。經反射探查確認：值在內部確實不存在，非僅未暴露。
- 主機板 / 晶片組溫度：當 Super I/O / EC 被 BIOS 鎖定時常為 N/A（筆電常見）。
- Intel 內顯溫度：常不可得（負載仍可讀）。
- GPU（NVIDIA/AMD）溫度、NVMe/SSD 溫度，以及所有占用率 / 網路 / ping / IP 指標皆正常。
dotnet build -c Debug
dotnet run -c Debug # 會跳 UAC（管理員）
dotnet publish -c Release -r win-x64 --self-contained false -o publish附 run-elevated.cmd：雙擊自動以管理員重啟自身，依序跑 --dump → --lhm → 啟動儀表板，方便一次驗證溫度與感測器地圖。
PCMonitor.exe --dump # 取樣一次輸出快照到控制台 + last-dump.txt（不進 UI）
PCMonitor.exe --shot out.png # 取樣 6 秒後截圖儀表板再退出
PCMonitor.exe --lhm # 列出 LHM 全部硬體/感測器（含 EC 探測）→ lhm-sensors.txt
PCMonitor.exe --dbcount # 讀取 DB 樣本筆數與首末時間戳
PCMonitor.exe --seedoutage # 寫 2 筆示範 outage（驗證歷史視窗）
PCMonitor.exe --dbcountoutages # 讀取 outage 筆數
PCMonitor.exe --lang en # 強制語言（auto/zh/en）不可達以 outage 事件 記錄：主機由通變不通（連續 ping 失敗達門檻，預設 3 次）開一條記 DownAt；恢復則補 RecoveredAt + 時長。從工具列或「連線監測」卡開歷史視窗（卡上按鈕亦顯示近 24h outage 數）。保留天數可調（預設 30 天）。
診斷：用
--lhm可列出 LHM 看到的全部硬體/感測器（含 Embedded Controller 探測），判斷某溫度到底是「感測器不存在」還是「存在但讀不到值」。 備註：經反射探查確認，LHM 0.9.6 在此機內部也沒有任何隱藏的 CPU/內顯溫度值（CPU 溫度 sensor 物件存在但從未成功採樣；內顯連溫度 sensor 都未建立），故反射路不可行；補回需 LHM 上游支援 Arrow Lake。
全部在 %LocalAppData%\PCMonitor\（C:\Users\<你>\AppData\Local\PCMonitor\）：
settings.json— 設定pcmonitor.db（+-wal/-shm）— SQLite 時間序列error.log— 非致命例外記錄
MIT — 見 LICENSE。Copyright (c) 2026 Henry Jia。
- LibreHardwareMonitorLib — Mozilla Public License 2.0 (MPL-2.0)。以未修改的 NuGet 組件形式使用；依 MPL-2.0 對 PCMonitor 自身源碼無 copyleft 義務，但該函式庫源碼見上鏈、其授權條款適用於該函式庫本身。© LibreHardwareMonitor contributors。
- LiveCharts2 — MIT。
- Entity Framework Core — MIT。
- CommunityToolkit.Mvvm — MIT。
- Microsoft.Extensions.DependencyInjection — MIT。
歡迎 issue 與 PR。請保持專案獨立運行（運行時不依賴外部監控工具）；任何更動硬體感測器讀取的改動都會碰到 ring0 / 驅動路徑，務必謹慎測試、切勿猜測未公開的 MSR/暫存器佈局。