windows上除了普通tcp之外，有一個CTCP。
據說可以提升長延時情況下的吞吐量。
win7可以方便的通過netsh int tcp set global congestionprovider=ctcp設置。
win10已經不能通過netsh設置了，只能通過power shell，ps設置。
ps里用的是NetTCPsetting，但根據下面鏈接，又說win10這種客戶端操作系統不能修改NetTCPsetting 參數，因為是只讀的。只能在服務器上設置。
https://docs.microsoft.com/en-us/powershell/module/nettcpip/set-nettcpsetting?view=win10-ps
The Set-NetTCPSetting cmdlet modifies a TCP setting. TCP settings are optimized for different network conditions including latency and congestion. To apply a TCP setting to a port number or destination IP address range, create a transport filter by using the New-NetTransportFilter cmdlet.
Note
- You can modify Custom and Non-Custom settings on windows server 2016 and 2019.
- You can modify only Custom settings, Internet and Datacenter settings Cannot be modified on windows 2012 or earlier versions.
- You cannot modify the NetTCPsetting on Client Operating systems(Windows 7, 8.1 and 10) as they are Read-Only.
-CongestionProvider
Specifies the congestion provider property that TCP uses. The acceptable values for this parameter are:
- CTCP. Compound TCP increases the receive window and amount of data sent. CTCP can improve throughput on higher latency connections.
- DCTCP. Data Center TCP adjusts the TCP window based on network congestion feedback based on Explicit Congestion Notification (ECN) signaling. DCTCP may improve throughput on low latency links.
- Default. Servers use DCTCP by default. Client computers use NewReno. For information about NewReno, see RFC 3782.
好了，既然不能修改模板的參數。
那如何指定使用哪個模板呢？
說是win10無法修改使用的模板
https://stackoverflow.com/questions/34619815/how-does-windows-decide-which-setting-template-internet-vs-datacenter-is-appli
一個帖子