Cable Forum - View Single Post - Could The TCP Optimiser Be Affecting My Connection?

Matth · 14-03-2009, 17:54

http://www.speedguide.net/tcpoptimizer.php

Anyone saying to "remove" TCP optimizer is barking up the wrong tree, as TCP optimizer applies settings, removing the program itself will do nothing - not sure if there are options which would restore all settings to default.

For Vista, it is better to allow the TCP/IP stack self-tuning to react, using optimizers in Vista is probably wrong in most cases, but for XP, the 20Mb optimize should be better than XP default, only thing I could suggest is to find the RWIN setting in the registry and double it.

One other thing, with large RWIN, enabling timestamping tend to stabilize throughput, as RTT calculation once per RWIN is not adequate at higher levels, particularly as the delay tends to jump once the window size is ramped to the point where throughput saturates.

14-03-2009, 17:54	#6
Matth Inactive Join Date: Mar 2004 Services: BB:M, TV:XL, Phone:M, Loyalty Posts: 2,516	Re: Could The TCP Optimiser Be Affecting My Connection? http://www.speedguide.net/tcpoptimizer.php Anyone saying to "remove" TCP optimizer is barking up the wrong tree, as TCP optimizer applies settings, removing the program itself will do nothing - not sure if there are options which would restore all settings to default. For Vista, it is better to allow the TCP/IP stack self-tuning to react, using optimizers in Vista is probably wrong in most cases, but for XP, the 20Mb optimize should be better than XP default, only thing I could suggest is to find the RWIN setting in the registry and double it. One other thing, with large RWIN, enabling timestamping tend to stabilize throughput, as RTT calculation once per RWIN is not adequate at higher levels, particularly as the delay tends to jump once the window size is ramped to the point where throughput saturates.