Please help me how to set "TCP Optimizer"

[Topus]

Here is my data:
OS-xp pro sp2
ISP-SEEDNET Taiwan
Dsl PPPoE-2000/256
--------------------------------------
SpeedGuide.net TCP/IP Analyzer


TCP properties for IP = 211.74.xxx.xxx ()
Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Notes: Read the Analyzer FAQ if the above is not your IP address.

TCP options string = 020405a00103030101010402

MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising your MTU value.

Default TCP Receive Window (RWIN) = 131040
RWIN Scaling (RFC1323) = 1 bits (scale factor of 2)
Unscaled TCP Receive Window = 65520

RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of 8)
253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44)

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

Your TCP Window limits you to: 5241.6 kbps (655.2 KBytes/s) @ 200ms
Your TCP Window limits you to: 2096.64 kbps (262.08 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 54 hops
TTL value is ok.

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

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

---------------------------------------------------

Thanks

[YeOldeStonecat]

Flip radio button choice to "Optimal"...slide bar to what your download speed is rated at, check to see that MTU is set for PPPoE.

[Topus]

Flip radio button choice to "Optimal"...slide bar to what your download speed is rated at, check to see that MTU is set for PPPoE.

Thanks for your reply!
That's what i've done before, but it won't work , improved nothing at all.

Thanks again

[trogers]

How and which website do you test your speed?

[Topus]

How and which website do you test your speed?

I live in Taipei-Taiwan. and my ISP has great reputation even the best in Taiwan.
Using 3 speed-test website in Taiwan. - Average speed 1100
and then download 3 kind of files - 100mb ; 200mb ; 300 mb
Average speed - 145

Thanks

[trogers]

I take it your file download is at 145 KB/s = 1160 kbps

First we try to see if your MTU can be increased to 1492.

Use the following custom setting with TCP Optimizer and then redo the TCP Analyzer test and post your new results:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1500
TTL - 64
TCP Receive Window - blank
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 - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
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

[Topus]

SpeedGuide.net TCP/IP Analyzer


TCP properties for IP = 59.104.xxx.xxx ()
Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Notes: Read the Analyzer FAQ if the above is not your IP address.

TCP options string = 020405a00103030e01010402

MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising your MTU value.

Default TCP Receive Window (RWIN) = 1073725440
RWIN Scaling (RFC1323) = 14 bits (scale factor of 28)
Unscaled TCP Receive Window = 65535

RWIN seems to be an excessively large number. If you're on a line lower than 20 Mbps (that is not satellite), consider using a smaller value.
For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of 8)
253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44)

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

Your TCP Window limits you to: 42949017.6 kbps (5368627.2 KBytes/s) @ 200ms
Your TCP Window limits you to: 17179607.04 kbps (2147450.88 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 54 hops
TTL value is ok.

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

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

[trogers]

Use the following custom setting with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 63360
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 - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
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

Try these settings and download a 100 MB file and note your file transfer speed after the 50% download point.

Then use the following and retest again. Keep the one that gives you the better download result:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 126720
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - checked
Timestamps - uncheck
Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
LocalPriority - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
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

[Topus]

The first setting is better than the second (3 times testing )
The speed does improve about 15% than before.
Can change another setting to get more speed, afterall it 's up to 65% only Should it be reasonable for at least 80%. ( Please forgive me for my greedy asking )
Thanks again

[trogers]

DSL speed depends on 2 conditions:

The distance of your comp to the ISP's central switch station.

The amount of internet traffic, usually high traffic during 7pm to midnight and low during 4 am to 7am.

You can test your speed again in the morning and see if you can get 80-85%.

[Topus]

Got it!

Thanks very much