inquiring about speed internet

atillabaysal · Post by **atillabaysal** » Mon Feb 18, 2008 1:05 pm

This is my first massage on this form to you.
I expect your help on tweaking my connection.
I use a wireless card (Airlive WT-2000 PCI).
I have an airties (trade) modem-Router wireless
My connection is 1024/254 ADSL. My access system is WINDOWS XP SP2.
I am appling both CFosSpeed and also Google Web Accelerator.

1. Our internet in Turkey which provides
both PPPOA and PPPOE also.
2. I am applying PPPOA just now. What do you recommend me to use?
3. I wonder if I apply cFosSpeed or not because it is reducing the value of MTU which was 1500 to 1478. Is there any problem with it?
........................................
SpeedGuide.net TCP/IP Analyzer

TCP options string = 0204059e0103030101010402

MTU = 1478
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.

MSS = 1438
Maximum useful data in each packet = 1438, which equals MSS.

Default TCP Receive Window (RWIN) = 128000
RWIN Scaling (RFC1323) = 1 bits (scale factor of 2)
Unscaled TCP Receive Window = 64000

For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
506176 (MSS x 44 * scale factor of 8)
253088 (MSS x 44 * scale factor of 4)
126544 (MSS x 44 * scale factor of 2)
63272 (MSS x 44)

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 5120 kbps (640 KBytes/s) @ 200ms
Your TCP Window limits you to: 2048 kbps (256 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 39 hops
TTL value is ok.

Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0)
---------------------------------------
« SpeedGuide.net TCP Analyzer Results »
Tested on: 02.18.2008 11:59
IP address: 85.103.xx.xx

TCP options string: 0204059e0103030101010402
MSS: 1438
MTU: 1478
TCP Window: 128000 (NOT multiple of MSS)
RWIN Scaling: 1
Unscaled RWIN : 64000
Reccomended RWINs: 63272, 126544, 253088, 506176
BDP limit (200ms): 5120kbps (640KBytes/s)
BDP limit (500ms): 2048kbps (256KBytes/s)
MTU Discovery: ON
TTL: 39
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
----------------------------------------
SPEEDTEST.NET
DOWNLOAD 891 kb/s UPLOAD 189 kb/s
Server:Eskişehir ISP:Turk Telekom
ping:98 ms Distance:~200 mi
---------------------------------------
http://speedtest.turktelekom.com.tr/upload.php
download 827.9 kbps = 103 KB/s
upload 211.7 kbps = 26 KB/s
----------------------------------------
Thanks a lot just now.

trogers · Post by **trogers** » Mon Feb 18, 2008 2:18 pm

I would uninstall Google Web Accelerator and clean my registry with CCleaner.

If you want to use cFosSpeed then you cannot use TCP Optimizer. If you want to use the Optimizer, you have to uninstall CFosSpeed and clean your registry. Reboot comp and post a new TCP Analyzer report.

atillabaysal · Post by **atillabaysal** » Mon Feb 18, 2008 3:22 pm

Google Web Accelerator and cfosspeed uninstaller..
-----------------------------------------------
MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.

Default TCP Receive Window (RWIN) = 128000
RWIN Scaling (RFC1323) = 1 bits (scale factor of 2)
Unscaled TCP Receive Window = 64000

For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 5120 kbps (640 KBytes/s) @ 200ms
Your TCP Window limits you to: 2048 kbps (256 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 39 hops
TTL value is ok.

Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0)

-------------------------------------------------
« SpeedGuide.net TCP Analyzer Results »
Tested on: 02.18.2008 15:15
IP address: 85.103.xxx.xx

TCP options string: 020405b40103030101010402
MSS: 1460
MTU: 1500
TCP Window: 128000 (NOT multiple of MSS)
RWIN Scaling: 1
Unscaled RWIN : 64000
Reccomended RWINs: 64240, 128480, 256960, 513920
BDP limit (200ms): 5120kbps (640KBytes/s)
BDP limit (500ms): 2048kbps (256KBytes/s)
MTU Discovery: ON
TTL: 39
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

thank you very much..

trogers · Post by **trogers** » Mon Feb 18, 2008 3:26 pm

Try the following with TCP Optimizer :

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1500
TTL - 64
TCP Receive Window - 64240
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - uncheck
Timestamps - uncheck

Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
LocalPriority - 1
Host Priority - 1
DNSPriority - 1
NetbtPriority - 1
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 80
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect

atillabaysal · Post by **atillabaysal** » Mon Feb 18, 2008 3:41 pm

Our internet in Turkey which provides...
both PPPOA(MTU=1500) and PPPOE (MTU=1492) also.
I am applying PPPOA (MTU=1500) just now. What do you recommend me to use?
THANKS...VERY GOOD...