Increase Multithread Download Speed by Disable Vista Auto Tuning on TCP/IP增加的多线程的下载速度由禁用Vista的自动调谐TCP / IP协议

In Windows Vista, Microsoft incorporates new TCP/IP stack which features Auto Tuning capability.在Windows Vista中，微软将新的TCP / IP协议栈功能自动调节能力。 The Auto Tuning function able to adjust and optimize TCP/IP connection based on network utilization in order to increase the transfer rate throughput.自动调谐功能能够调整和优化TCP / IP连接基于网络的利用，以提高传输速率的吞吐量。 In theory the new stack suppose to do so, however, in practical, Auto Tuning feature may not work correctly to bring better performance for network downloading and web surfing.在理论的新栈假设这样做，但是，在实际的，自动调整功能可能无法正常工作带来更好的性能，为网络下载和网上冲浪。

Other than the problems mentioned以外的其他所提及的问题 previously以前 , Auto Tuning may also cause reduce the rate of establishing network connection, especially when using third-party driver for the network card. ，自动调整也可能导致减少的速度建立网络连接，尤其是当使用第三方驱动程序，为网路卡。 Other possible problems are Windows Live Messenger slow sign in process or unable to login, slow speed when viewing shared resources in LAN environment, or slow download speed when using multi-thread multiple-concurrent-connection programs such as FlashGet, BT clients such as uTorrent, BitComet and etc comparing with the download speed possible to get in WinXP.其他可能出现的问题是Windows Live Messenger的缓慢，签署过程中或无法登录，速度慢，当查看共享资源在局域网环境中，或缓慢的下载速度时，使用多线程的多并行连接的程序，如网际快车，英国电信的客户，如utorrent ， bitcomet等比较，与下载速度可能得到在winxp 。

All these symptoms may not caused by “Auto Tuning”, however, trying to disable Auto Tuning on TCP/IP in Vista to verify if the problems have been solved is a good way to ensure that it’s not the culprit.所有这些症状可能不是所造成的“自动调节” ，但是，试图禁用自动调整TCP / IP协议在Vista验证，如果问题已经解决是一个好方法，以确保它不是罪魁祸首。

Disable Receive Window Auto-Tuning Level on TCP/IP 禁用接收窗口自动调谐的水平上的TCP / IP

1. Open a command prompt with administrator rights打开一个命令提示符具有管理员权限 . 。
2. Input the following command, and press Enter when done:输入以下命令，并按下Enter时，做了：

   netsh int tcp set global autotuninglevel=disable在netsh诠释的TCP设置全球autotuninglevel =禁用

3. Restart the system.重新启动系统。

If the problem still exists, it’s more likely caused by other reasons such as如果问题依然存在，它的更可能造成的其他原因，如 maximum concurrent connection attempt limit最大并发连接尝试的限制 . 。 In this case, we can re-enable the Auto Tuning for good.在这种情况下，我们可以重新启用自动调整为好。

Enable Receive Window Auto-Tuning Level on TCP/IP 使接收窗口自动调谐的水平上的TCP / IP

1. Open a command prompt with administrator rights打开一个命令提示符具有管理员权限 . 。
2. Input the following command, and press Enter when done:输入以下命令，并按下Enter时，做了：

   netsh int tcp set global autotuninglevel=normal在netsh诠释的TCP设置全球autotuninglevel =正常

3. Restart the system.重新启动系统。

IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要说明 ：这是一个机器翻译网页是“按原样”提供的担保。 Machine translation may be difficult to understand.机器翻译可能很难理解。 Please refer to请参阅 original English article英文原版的文章 whenever possible.只要有可能。

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