need help in optimizing tcp

[Saken1987]

I think I have 5 mb connection. I did some tweaking, but it seems not to change a lot. I'm using Vista Home Premium(64bit). I live in Canada. My ISP is Shaw Communications, and I use Netgear WGT624v2 modem.

« SpeedGuide.net TCP Analyzer Results »
Tested on: 11.20.2008 22:47
IP address: 70.79.xxx.xxx

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 65700 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 16425
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 2628kbps (329KBytes/s)
BDP limit (500ms): 1051kbps (131KBytes/s)
MTU Discovery: ON
TTL: 113
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

and test form speedtest.net

http://www.speedtest.net/result/359578423.png (http://www.speedtest.net)

[Rollingstone]

Vista cannot be tweaked ! It's auto-tuning function.

[trogers]

Vista cannot be tweaked ! It's auto-tuning function.

Since speedtest is not near to 5 mbps, check signal quality and update firmwares for Nic and router to suit Vista.