臺灣博碩士論文加值系統

隨著網際網路的崛起，資訊快速的流通，利用網路傳輸及儲存的資料越來越大量。而伺服器效能左右了傳輸及儲存的速度，因此伺服器能承受多大的流量變得相對重要。而壓力測試(stress test)則是目前測試及評估伺服器效能最常用的方式。伺服器壓力測試利用短時間的大量存取服務，讓伺服器處於高負載。在此情況下可以顯示效能的極限。一般來說，壓力測試是用測試軟體來找出伺服器的最大負荷量。但是測試軟體會因其設計的架構及其使用的平台不同，執行所花費的時間及所需的硬體資源也不盡相同。因此本研究目的是找出一個方法可以用最短的時間，最少的硬體資源來完成壓力測試。本篇文章使用一套伺服器測試軟體Apache Jmeter為例，調校此測試軟體的執行環境，並修改程式的記憶體配置方式，以求執行時能夠更穩定及快速的產生測試結果。藉由Jmeter模擬多使用者同時連線所產生的測試結果，評估伺服器的效能瓶頸。接著我們與原本的Jmeter結果比較，證明本研究所使用的方法是有效的。

Server performance test is an important task of evaluating consistent and rapid server services for users. Therefore, stress test software has been commonly used to generate concurrent connections to the server service to simulate real-world situations. This study uses server testing software - Apache JMeter in order to collect and analyze the test results for better tuning of the critical software. Executing environment parameters and memory allocation schemes are adjusted to overcome the performance bottleneck for reliable test results.

誌謝.................................................................i
中文摘要........................................................ii
英文摘要........................................................iii
目錄................................................................iv
表目錄............................................................vi
圖目錄............................................................vii
1. 緒論............................................................1
1.1 研究動機................................................1
1.2 研究目的................................................2
1.3 論文架構................................................3
2. 文獻探討...................................................4
2.1 系統資源問題.......................................4
2.2 伺服器效能測試...................................5
2.3 HotSpot VM...............................................11
3. 研究方法....................................................16
3.1 問題描述................................................16
3.2 修改方法................................................17
3.3 實驗環境................................................19
3.4 測試參數................................................22
4. 實驗結果與討論.......................................27
5. 結論.............................................................41
參考文獻.........................................................42

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