Need assistance tweaking

[jhr76]

Hi. I would like to get some assistance in tweaking my TCP/IP stack to maximize download speeds, mostly P2P. I have a 3 Mb cable connection on Windows XP Home SP3 fully updated.
Below are my TCP Analyzer and Speedtest/Pingtest.net results. Thanks a lot in advance.

« SpeedGuide.net TCP Analyzer Results »
Tested on: 10.07.2009 17:55
IP address: 190.190.xxx.xx
Client OS: Windows XP

TCP options string: 020405ac0103030001010402
MSS: 1452
MTU: 1492
TCP Window: 32767 (NOT multiple of MSS)
RWIN Scaling: 0 bits
Unscaled RWIN : 32767
Recommended RWINs: 63888, 127776, 255552, 511104, 1022208
BDP limit (200ms): 1311kbps (164KBytes/s)
BDP limit (500ms): 524kbps (66KBytes/s)
MTU Discovery: ON
TTL: 102
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

Download speed: 3.04 Mb/s
Upload speed: 0.26 Mb/s

Ping test: 28 ms
Jitter result: 11 ms

[Rollingstone]

Try the following with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1492
TTL - 64
Windows Scaling - check
TCP Receive Window - 127776
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 10
LocalPriority - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 0
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768

[jhr76]

OK, I just did as you instructed and then (after rebooting) run a new speed and ping test. Both upload and download speeds were exactly the same. The ping test showed some improvement:
Ping: 18 ms
Jitter: 8 ms
I have yet to test the performance with P2P and regular downloads.
I´ll check that out and see if there is any improvement there
Thanks