How To Determine If Auto-tuning Is On Windows 10
Windows Auto-Tuning is a feature introduced in Windows Vista and still in use on Windows 10. Windows Auto-Tuning was designed to automatically improve the performance for programs that receive TCP data over a network. Windows Auto-Tuning should be enabled and left alone unless you have a router, WI-Fi, network card, or a firewall that does not. Jan 08, 2018 Window Auto-Tuning feature is said to improve the performance for programs that receive TCP data over a network. It is nothing new. It was introduced in Windows Vista and is present in Windows 10 too. In today’s Internet, the range of latencies & throughput speeds is just too large to manage statically.
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Applies to: Windows Server (Semi-Annual Channel), Windows Server 2016
You can use this topic to learn about performance tools.
This topic contains sections about the Client to Server Traffic tool, TCP/IP Window Size, and Microsoft Server Performance Advisor.
Client to Server Traffic tool
The Client to Server Traffic (ctsTraffic) tool provides you with the ability to create and verify network traffic.
For more information, and to download the tool, see ctsTraffic (Client-To-Server Traffic).
TCP/IP Window Size
For 1 GB adapters, the settings shown in the previous table should provide good throughput because NTttcp sets the default TCP window size to 64 K through a specific logical processor option (SO_RCVBUF) for the connection. This provides good performance on a low-latency network.
In contrast, for high-latency networks or for 10 GB adapters, the default TCP window size value for NTttcp yields less than optimal performance. In both cases, you must adjust the TCP window size to allow for the larger bandwidth delay product.
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You can statically set the TCP window size to a large value by using the -rb option. This option disables TCP Window Auto-Tuning, and we recommend using it only if the user fully understands the resultant change in TCP/IP behavior. By default, the TCP window size is set at a sufficient value and adjusts only under heavy load or over high-latency links.
How To Determine If Auto-tuning Is On Windows 10 Free
Microsoft Server Performance Advisor
Microsoft Server Performance Advisor (SPA) helps IT administrators collect metrics to identify, compare, and diagnose potential performance issues in a Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 R2, or Windows Server 2008 deployment.
SPA generates comprehensive diagnostic reports and charts, and it provides recommendations to help you quickly analyze issues and develop corrective actions.
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For more information and to download the advisor, see Microsoft Server Performance Advisor in the Windows Hardware Dev Center.
For links to all topics in this guide, see Network Subsystem Performance Tuning.
How To Determine If Auto-tuning Is On Windows 10 Download
Window Auto-Tuning feature is said to improve the performance for programs that receive TCP data over a network. It is nothing new. It was introduced in Windows Vista and is present in Windows 10 too. In today’s Internet, the range of latencies & throughput speeds is just too large to manage statically. It needs to be adjusted dynamically. Windows 10 will dynamically adjust the receive buffer size to the throughput and latency of the link, using this feature.
Programs like Automatic Updates, Windows Update, Remote Desktop Connection, Windows Explorer for network file copy, etc, use WinHTTP or Windows HTTP Services.
Window Auto-Tuning feature is enabled by default in Windows 10 and makes data transfers over networks more efficient. But if your network uses an old router or your firewall software does not support this feature, then you may experience slow data transfers or even loss of connectivity.
To check the status of Auto-Tuning feature on your system, in an elevated command prompt windows, type the following and hit Enter:
If you see ‘normal’ written against Receive Window Auto-Tuning Level, it means that the feature is enabled and it is working fine.
To disable Windows AutoTuning, run the following command:
To enable Windows AutoTuning, run the following command:
You can also tweak the Windows Registry, says KB947239. To enable the Receive Window Auto-Tuning feature for HTTP traffic, Run regedit and navigate to the following registry subkey:
HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionInternet SettingsWinHttp
Right-click on it > New > DWORD Value. Type TcpAutotuning and give it a vale of 1.
How To Determine If Auto-tuning Is On Windows 10 64
Click OK and exit.
To disable Receive Window Auto-Tuning feature for HTTP traffic, give it a value of 0 or delete the created TcpAutotuning DWORD.
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.
Let the default settings of Window Auto-Tuning feature be enabled. If your network uses an old router or your firewall software does not support this feature, and you are experiencing poor or no connectivity issues, only then may you disable this feature and see if it works in your favor.