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Artigo 2616

Performance - Transfer Buffers

Auto Tune Receive Buffer

If this option is enabled the Auto Tuning of the TCP Receive Window feature from Windows is used.
Default: Enabled

Receive Buffer Size

Sets the size of the socket receive buffer (SO_RCVBUF). This value directly affects the TCP window size.
Default: 128 KB

Auto Tune Send Buffer Size

Windows 7: If CTCP [6] is not enabled the user defined socket buffer size is used. If CTCP is enabled the Windows TCP stack automatically adjusts the sender's congestion window.
Windows 8 and higher: CTCP is enabled by default. The TCP stack automatically optimizes the congestion window.
Default: Enabled

Send Buffer Size

Sets the size of the socket send buffer (SO_SNDBUF). This value directly affects the TCP window size.
Default: 128 KB

References

1. Technet: TCP Receive Window Auto-Tuning
2. setsockopt function (winsock.h)
3. RFC1323: TCP Extensions for High Performance (TCP Window Scaling, SACK, etc)
4. KB: Enable CTCP

Palavras-chave
auto-tuning performance slow transfer

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