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.
When you use the TCP receive window autotuning feature in a TCP connection, you notice that the feature only works for a while and then stops working. Additionally, you experience slow performance. May 04, 2015 TCP Optimizer 4 Released (Windows 7 / 8.1 / 10 / 2012 Server R2 are all supported) SG TCP Optimizer 4.0 released As with all previous versions, it supports all Windows versions from 9x, and we've added support not only for Windows 8/8.1, 2012 Server, 2012 Server R2, but also for the latest Windows. THE INFORMATION IN THIS ARTICLE APPLIES TO: All Windows products; DISCUSSION. Tuning Windows for TCP/IP performance isn't specific to any one Globalscape product. Rather, it depends on which version of Windows.
While the feature may improve speed, in some cases it can also cause problems and slow down the network.
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:
Here’s a list of available options for the autotuning parameter:
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.
Sep 18, 2012
Speed up Windows 7 and 2008 R2 Network
Slow network is a pain in this high speed Internet and local area networks we have and with Windows 7, Vista and Windows 2008 R2 having a slow network is a big issue. Slow networks can cause issues with accessing shares, accessing and transferring data, DNS name resolutions and of course Internet downloads and uploads.
Here are a few items that can be tweaked to aid in reducing some of the slowness with the network on Windows.
Windows Server 2012 R2 Updates
Remove RDC ( Remote Differential Compression)
This feature introduced with Windows Vista to transfer data over network in compressed format. RDC can slow down network data transfer in windows. You can remove this RDC (Remote Differential Compression) in windows 7 by removing the feature in control panel. Windows 2008 R2 systems do not have RDC turned on, so there is nothing to do here, but if you want it, it can be added by adding the feature in Server Manager.
Receive Window Auto-tuning Level Server 2012 R2 1
Open Control Panel click on Programs and Features. Click on ‘Turn Windows features on or off’, and un-check Remote Differential Compression and click OK.
Disable Autotuning
Disabling autotuning will help much on DNS lookup and network discovery. It improves the data transfer speed also over the network.
Start command prompt as administrator, lets first see what the global settings. Type:
netsh interface tcp show global
We see that Receive Window Auto-Tuning Level is set to normal. Now we need to set it to disabled. Type:
netsh interface tcp set global autotuning=disabled
We will get an OK returned and now rerun show global and we see it is disabled.
Remove IPv6 from network properties
Here in the US most networks have not adopted IPV6. For your home network you are probably not using it and possibly not business networks. Keeping IPv6 in your computer sometimes slows down network by trying to register IPv6 addresses, or trying to get IPv6 address, or trying to resolve IPv6. This is turned on by default in Windows 7 and Windows 2008 R2.
Open Control Panel and click on Network and Share Center and click on change adapter settings. Right click on Local Area Connection and select Properties. For Wireless right click on Wireless Network Connection and select properties.
Un-check Internet Protocol Version 6 (TCP/IPV6) and click ok.
Clear DNS Cache
Clearing the DNS cache is good to do periodically to clear any old and broken records from your computer. This will allow new queries to come from the DNS server as you make them.
To clear DNS cache, open command prompt as administrator and type:
ipconfig /flushdns
With a Windows 2008 R2 server you will need to register DNS if you are using Dynamic DNS and run How to use auto tune garage band 2018.
Receive Window Auto-tuning Level Server 2012 R2 Download
ipconfig /registerdns
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Windows Server 2012 R2 6.3
Hope a few of these quick tips will speed some of you network slowness up.
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Windows Server 2012 R2 Support
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