Windows Server 2008 R2 Receive Window Auto Tuning Level

14.04.2020by

May 21, 2018 Hello Everyone! This is Dante again, and today I have a new note for you that hope will help you keep understanding how Windows Networking works. For today’s note, we will talk a bit about how Windows handle the TCP Receive Window size since Windows Server 2008 / Windows Vista. In previous releases, the TCP May 21, 2018 By Dante Stancato. Find answers to 2008 R2 advanced TCP tuning from the expert community at Experts Exchange. Receive Window Auto-Tuning Level: normal Add-On Congestion Control Provider: ctcp. Dan received a Solution Windows server 2008 R2 file and folder permissions. Windows Server 2008; Windows Server.

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.

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. Performance Tuning Guidelines for Windows Server 2008 R2 May 16, 2011 Abstract This guide describes important tuning parameters and settings that you can adjust to improve the performance and energy efficiency of the Windows Server® 2008 R2. Notes: Setting is available in Windows 7, Vista (SP1), 2008 Server. Default value is 10 under Windows 7, similar behavior if the setting is not present in the Registry. Games that may be affected by this.

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Tcp Receive Window

To disable the feature, use this command:

To see if the feature is enabled or disabled, use this command:

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

Windows Server 2008 R2 Receive Window Auto Tuning Levels

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

Windows Server 2008 R2 Receive Window Auto Tuning Level 6

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.

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