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題名 | 評估計程車派遣系統的壓力測試方法=A Performance Evaluation Method for Taxi Dispatching System |
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作 者 | 陳宛渝; 王景弘; 謝文生; 李威勳; 劉子正; 鄭滄濱; 張峻銘; 張倍魁; 陳禹昕; 鄭伯順; | 書刊名 | 電信研究 |
卷期 | 36:5 民95.10 |
頁次 | 頁617-625 |
分類號 | 448.6 |
關鍵詞 | 計程車派遣系統; 智慧型運輸系統; 總體無線分組業務; 終端單元; TDS; GPS; GPRS; Taxi dispatch system; Global positioning system; General packet radio service; |
語文 | 中文(Chinese) |
中文摘要 | 針對研發的計程車派遣系統(Taxi Dispatch System, TDS)[3]是藉由具有GPRS/GPS的車機群、GPRS透通之M化伺服器、GPS資料過濾的E化伺服器、派遣應用伺服器、派遣網站伺服器及派遣資料庫等所組成,其架構圖如圖M三。本篇論文主要內容是探討兩個議題;(1)同時運作的車機數量對系統的影響;(2)同時派遣作業的值機員數量對系統的影響,此兩項評估範圍包含E化伺服器、派遣應用伺服器、派遣網站伺服器等伺服器的運作效率。評估壓力測試中,為了解實際情況的限制、成本考量及環境資源的不足,將利用模擬車機取代實際的車機群及M化伺服器,及電腦值機員代替實際值機員,其實驗架構圖如圖4;在所有伺服器的規格是DELL PE6600機型Intel Xeon MP2.0GHz/ 1MB*2及2GB SDRAM及Linux作業系統上依穩定條件為優先條件下作實驗,依據實驗數據,初步推估(1)系統同時可以運作1萬台的車機數量;(2)系統同時可以承受70位值機席同時執行派遣作業。 |
英文摘要 | TDS (Taxi Dispatching System) is composed of two parts: front-end OBU (On-Board Units) and backend servers, which are M-Server, E-Server, Dispatch-Application Server, Dispatch-Web Server and Dispatch-Database. It is a critical job to evaluate the bottleneck of the TDS, especially in the following two issues: (1) What is the fleet size capacity of TDS? (2) How many operators can run online simultaneously in the backend system of TDS? In this paper, we proposed a bottleneck evaluation method of TDS by simulating OBU and operators in computer program, which is intending to solve the two issues discussed above. The experimentation result shows that (1) The single dispatch system can support 10000 car-devices simultaneously; (2) Dispatch system can support 70 call-center sites simultaneously. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。