This is a discussion on rwin value within the Sky Broadband help forums, part of the Sky Broadband help and support category; I have a 16mbps connection. Dslreports tweak tester recommends an rwin value between 150,380 and 400,040 SG TCP Optimiser sets ...
- 23-08-07, 02:40 PM #1
I have a 16mbps connection.
Dslreports tweak tester recommends an rwin value between 150,380 and 400,040
SG TCP Optimiser sets the rwin value to 1,027,840
Why is there such a large difference?
- 25-08-07, 04:11 PM #2
Re: rwin value
I have read somewhere else:
" RWIN should be large enough to sustain continuous data transfer. By default, this window is too small (8760 for Windows 95/98/98SE/NT and 17520 for Windows ME/2000/XP) for many types of DSL and Cable (Broadband).
Raising RWIN creates a larger window, which allows more information to come through non-stop, up to a point. After this point, no difference will be noticed for the particular connection. For each user, this point can/will vary and is determined by (bandwidth * delay) product.
Please note that there is no single value for all hosts on the Internet. You have to allocate some reasonable extra RWIN (say 20-25%) for variance from average latency "
Does having too large an rwin value have any detrimental effect on the connection?
- 25-08-07, 07:43 PM #3