Windows Server 2008 R2 Receive Window Auto Tuning Level

Oct 05, 2012  How to disable Receive Window Auto-Tuning Level in Windows 7 / 2008. The Receive Window Auto-Tuning feature lets the operating system continually monitor routing conditions such as. Windows Vista/7 has the ability to automatically change its own TCP Window auto-tuning behavior to a more conservative state regardless of any user settings. It is possible for Windows to override the autotuninlevel even after an user sets their custom TCP auto-tuning level. To determine the optimal receive window size, the Receive Window Auto-Tuning feature measures the products that delay bandwidth and the application retrieve rates. Then, the Receive Window Auto-Tuning feature adapts the receive window size of the ongoing transmission to take advantage of any unused bandwidth. Jun 05, 2009  Recieve Window Auto-Tuning Level Problem i am running vista64 home primium (sp2) i have been getting slow internet speeds and on checking Recieve Window Auto-Tuning Level i found it set to highlyrestricted, i cannot seem to disable it.i have tried the MS auto. TCP Receive Window Auto-Tuning Prior to Windows Server 2008, the network stack used a fixed-size receive-side window that limited the overall potential throughput for connections. One of the most significant changes to the TCP stack is TCP receive window auto-tuning. Aug 17, 2016  Use the Windows key + X keyboard shortcut to open the Power User menu and select Command Prompt (Admin). Type the following command to verify Auto-Tuning is disabled: netsh interface tcp show global; If “Receive Window Auto-Tuning Level. Windows Vista includes the Receive Window Auto-Tuning feature which improves performance for programs that receive TCP data over a network. However, this feature is disabled by default for programs that use the Windows HTTP Services.

The Receive Window Auto-Tuning feature lets the operating system continually monitor routing conditions such as bandwidth, network delay, and application delay. Therefore, the operating system can configure connections by scaling the TCP receive window to maximize the network performance. To determine the optimal receive window size, the Receive Window Auto-Tuning feature measures the products that delay bandwidth and the application retrieve rates. Then, the Receive Window Auto-Tuning feature adapts the receive window size of the ongoing transmission to take advantage of any unused bandwidth.

While the feature may improve speed, in some cases it can also cause problems and slow down the network.

Receive Window Auto-tuning Level Highlyrestricted

To disable the feature, use this command:

To see if the feature is enabled or disabled, use this command: Cooking fever cheats.

To enable the Receive Window Auto-Tuning Level, use this command:

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Here’s a list of available options for the autotuning parameter:

Receive Window Auto-tuning Level

disabled: Fix the receive window at its default value.
highlyrestricted: Allow the receive window to grow beyond its default value, but do so very conservatively.
restricted: Allow the receive window to grow beyond its default value, but limit such growth in some scenarios.
normal: Allow the receive window to grow to accommodate almost all scenarios.
experimental: Allow the receive window to grow to accommodate extreme scenarios. WARNING: This can dramatically degrade performance in common scenarios and should only be used for research purposes.