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Need help tweaking my TCP/IP

Posted: Mon Jul 04, 2016 7:58 pm
by jhr76
Hi. I was wondering if you guys would tell me what the best settings would be in order to improve network performance (downloads and browsing). My advertised internet speed is 12 Mbps. I am running Windows 7 Professional x64, fully updated, Outpost Firewall 9.3 and Malwarebytes Anti Exploit. Thanks a lot in advance. :thumb:

« SpeedGuide.net TCP Analyzer Results »
Tested on: 2016.07.04 19:49
IP address: 181.169.xxx.xx
Client OS/browser: Windows 7 (Firefox 47.0)

TCP options string: 020405b40103030801010402
MSS: 1460
MTU: 1500
TCP Window: 65536 (NOT multiple of MSS)
RWIN Scaling: 8 bits (2^8=256)
Unscaled RWIN : 256
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 2621kbps (328KBytes/s)
BDP limit (500ms): 1049kbps (131KBytes/s)
MTU Discovery: ON
TTL: 49
Timestamps: OFF
SACKs: ON
IP ToS: 00000011 (3)
Precedence: 000 (routine)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 1 (low cost)
Check bit: 1 (incorrect)
DSCP (DiffServ): CS0 000000 (0) - class 0, default traffic (RFC 2474).

Posted: Tue Jul 05, 2016 4:41 am
by Philip
Your basic settings seem ok, but I would run the TCP Optimizer selecting "optimal" settings, then run a speed test and see how it behaves.

For fine-tuning, you may also try different QoS setting, seems your ISP either allows custom ones, or sets them (The ToS/DSCP at the bottom of the Analyzer results). They can be changed from the "Advanced" tab in the TCP Optimizer, the online documentation explains how.

I hope this helps.

Posted: Tue Jul 05, 2016 7:52 am
by jhr76
Thanks for the reply. I should have mentioned that I already run the TCP Optimizer and selected the "optimal" settings, but I was looking for further/finer tuning.