Optimize and Increase BitTorrent (BT) Download Speed in Vista優化和增加的BitTorrent （ BT ）中的下載速度在Vista

Windows Vista, like Windows XP SP2 or XP SP3, has also limit the number of concurrent simultaneous half-open TCP connections or sync packets that the system can establish at any one time. Windows Vista的一樣， Windows XP SP2或XP SP3的，也限制了大量並行的同時半開放的TCP連接或同步的數據包，該系統可以建立在任何一個時候。 To make thing worse, the TCP/IP network protocol stack in Windows Vista has been rewritten so that Vista can auto adapt and optimize network settings according to network connection configuration.使事情更糟的是， TCP / IP網絡協議棧在Windows Vista已被改寫，使Vista可以自動適應和優化網絡設置，根據網絡連接配置。 The changes to Vista networking may make peer-to-peer downloading and uploading such as BitTorrent (BT) network crawling at slow speed.更改Vista的網絡可能會使點對點下載和上傳BitTorrent等（ BT ）中網絡檢索在速度緩慢。

P2P users using BitTorrent client such as uTorrent, BitComet, ABC, Azureus, or eDonkey network client such as eMule resorts various workarounds in order to speed up the torrents download speed. P2P的用戶使用BT客戶端，如utorrent ， bitcomet ，美國廣播公司， azureus ，或eDonkey的網絡客戶端，如emule度假村的各種變通方法，以便加快急流下載速度。 Other than the usual port forwarding in router, firewall setting to unblock the BT client or other P2P client, and tweaking of options in the client itself, some users use其他比一般的端口轉發的路由器，防火牆設置要解鎖BT的客戶端或其他的P2P客戶端，並且調整的方案在客戶端本身，有些用戶使用 patched tcpip.sys that remove the half-open connection limit修補Tcpip.sys中表示，消除半開放連接限制 imposed by Microsoft.所施加的微軟。

If you don’t want to modify or patch the the tcpip.sys of the system, here’s another workaround which you can try if the change will solve the slow download problem and increase the P2P BitTorrent or ED2K download speed.如果您不想以修改或修補了Tcpip.sys中的系統，這裡的另一可行方案，其中您可以嘗試，如果改變將解決下載緩慢的問題和增加的P2P或BT的ed2k下載速度。

By default, Vista enables Receive Window Scaling and uses a RWIN (TCP/IP Receive Window) of 256 bytes with a scale factor of 8 (256^2*8=64K bytes) when performing the handshake, which allows the maximum size of RWIN at 16,776,960 bytes.默認情況下， Vista中，使接收窗口的縮放和使用rwin （ TCP / IP的接收窗口）的256字節，與規模因素，第8條第（ 256 ^ 2 * 8 = 64K的字節）時，表演握手，它允許的最大尺寸為rwin在16776960字節。 Some older routers, switches, servers or network equipments do not negotiate the scale factor, and will always communicate with a RWIN of 65536 bytes.一些較舊的路由器，交換機，服務器或網絡設備的不談判，規模因素，將永遠溝通與rwin的65536字節。 Thus in when Vista connects with 256 bytes RWIN, the connection speed will have slow start or dropped automatically.因此，當Vista的連接，與256字節rwin ，連線速度將開始緩慢下降或自動。

The following command will set the TCP Auto Tuning feature to highly restricted, which allows the TCP/IP window to grow beyond its default value, and instructs Vista to use RWIN of 16,384 bytes with a scale factor of 2 (16384^2*2=64K bytes), with a maximum size of 262,140 bytes.以下命令將設置的TCP自動調整功能，以高度的限制，這使得TCP / IP的窗口，成長超出其預設值，並指示Vista中使用rwin的16384個字節，與規模因素2 （ 16384 ^ 2 * 2 = 64K的字節） ，最高的大小262140字節。 Open an打開一 elevated command prompt提升的命令提示符 to run the command.要運行該命令。

netsh interface tcp set global autotuninglevel=highlyrestricted 在netsh界面的TCP設置全球autotuninglevel = highlyrestricted

If restricting TCP/IP Auto Tuning level doesn’t help, try the other values possible for the autoTuningLevel parameter:如果限制的TCP / IP自動調諧水平沒有幫助，請嘗試其他值可能為autotuninglevel參數：

• disabled - Fix the receive window at the default value, which is 65536 bytes RWIN.殘疾人-修正接收窗口在預設值，這是6 5536字節r win。
• highlyrestricted - Allow for the receive window to grow beyond the default value, but do so very conservatively. highlyrestricted -允許接收窗口的增長超出了預設值，但這樣做非常保守。
• restricted - Allow for the receive window to grow beyond the default value, but limit such growth in some scenarios.限制-允許接收窗口的增長超出了預設值，但限制這種增長在某些情況下。
• normal - Allow for the receive window to grow to accommodate almost all scenarios.正常-允許接收窗口成長，以容納幾乎所有的情況。
• experimental - Allow for the receive window to grow to accommodate extreme scenarios.實驗-允許接收窗口成長，以容納極端的情況。

Reboot the computer after changing this setting.重新啟動計算機後更改此設置。 The changing the autotuninglevel will also solve problems such as slow loading of website’s web page, or web site sending data slowly or drops the data completely as described in該改變autotuninglevel也將解決問題，例如緩慢加載網站的網頁，或網站發送數據緩慢或下降的數據完全中所述的 KB929868 kb929868 , or other slow connection problem such as ，或其他連接速度慢的問題，如 slow downloading of POP3 email緩慢下載POP3電子郵件 . 。

IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要說明 ：這是一個機器翻譯網頁是“按原樣”提供的擔保。 Machine translation may be difficult to understand.機器翻譯可能很難理解。 Please refer to請參閱 original English article英文原版的文章 whenever possible.只要有可能。

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This entry was posted on Saturday, December 15th, 2007 at 10:37 pm and is filed under 此項目被張貼在週六， 2007年12月15日在下午10時37分，並提交下 Windows Vista Windows Vista的 . 。 You can follow any responses to this entry through the 您可以按照任何的反應，此項目通過 RSS 2.0 2.0 feed. 餵養。 You can 您可以 leave a response 留下的回應 , or ，或 trackback Trackback跟踪 from your own site. 從你自己的網站。