I tried a 486 DX33 with 8MB of ram, two NE2000 NICs with both DSL and CABLE. I also tried 486 DX4-100 with 16MB ram with both services as well. My observation, for whatever reason is that first of all, cable seems to need more power or RAM where DSL not quite as much. But with a cap of 1Mb on DSL and 3Mb on CABLE, I was getting 991Mb and 1.5Mb with the DX4-100 and 600Mb and 300Mb with the DX33 (more degredation with cable). The same NICs were used in both (moved from one machine to the other).
Timing buffer-cache reads: 128 MB in 2.75 seconds = 46.55 MB/sec Timing buffered disk reads: 64 MB in 3.20 seconds = 20.00 MB/sec
由以上的數據,可以看得出來,硬碟 DMA 是否開啟,對讀取效率影響很大。
二、關閉多餘的系統服務。
這是老生常談的題目了,一般我們當作桌上型工作站的時候,只需要啟動幾個基本的 Service 即可,其他的不但沒用,一方面會佔用系統資源,另一方面則會有安全上的顧慮,我平常只用來上網、打打文件、聽聽音樂、看看電影,多半時間只是一個 Client 端,實在沒必要啟動 Server 端的服務,所以,我在 Setup System Services時,只留下以下幾個 Service,其餘的都關閉。