cyber tweak reg entries

ryder · Post by **ryder** » Sun Aug 26, 2001 9:33 am

Hello ,I have tried the Cyber tweak and actually my connection became slower,but there are some reg entries I dont understand that the cyber tweak enters:

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\WDMFS]
"ImagePath"="\\SystemRoot\\System32\\Drivers\\wdmfs.sys"
"ErrorControl"=hex:01,00,00,00
"Start"=hex:01,00,00,00
"Type"=hex:01,00,00,00
"DisplayName"="WDM Windows File System Mapper"

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\WDMFS\Parameters]
"BufferMultiplier"="512"
"DefaultReceiveWindow"="373360"
"DefaultSendWindow"="373360"
"InitialLargeBufferCount"="50"
"InitialMediumBufferCount"="100"
"InitialSmallBufferCount"="150"
"LargeBufferSize"="8096"
"MediumBufferSize"="1804"
"SmallBufferSize"="256"
"PriorityBoost"="2"
"StandardAddressLength"="96"
Does anyone know what these would do ,is there any benfit to adding these.

Thankyou for any help

Lobo · Post by **Lobo** » Sun Aug 26, 2001 12:53 pm

What size CPU and how much RAM do you have

ryder · Post by **ryder** » Sun Aug 26, 2001 1:36 pm

Hi Lobo,Thanks for your reply
I have 1.2 athalon 384mg ram win98se

Lobo · Post by **Lobo** » Sun Aug 26, 2001 1:42 pm

Are you on cable

ryder · Post by **ryder** » Sun Aug 26, 2001 1:48 pm

Yes I am

Lobo · Post by **Lobo** » Sun Aug 26, 2001 1:51 pm

Do you have adjuster installed

ryder · Post by **ryder** » Sun Aug 26, 2001 1:56 pm

yes and these are the settings

TCP options string = 020405b40103030301010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.
Default Receive Window (RWIN) = 373360
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 46670
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN 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:
Your RcvWindow limits you to: 14934.4 kbps (1866.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 5973.76 kbps (746.72 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 18 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349)= 00000000

Lobo · Post by **Lobo** » Sun Aug 26, 2001 1:59 pm

For Win 9x bring up Cablenuts adjuster inside icon on desktop in box that says Cablenut,click on adjuster, in box that says DefaultRvcWindow take out number that is in there and put in one of these, 1 at a time, try: 5314400, 554800, 560640

You do not have to show me but check analyzer here at SG to make sure RWIN is in, you will see number right after (RWIN) on analyzer
At bottom click save to registry, and REBOOT each time you change value in adjuster or it will not work. On help page below in signature, 2nd page, at bottom are Tips, and How to do Speed test

Lobo · Post by **Lobo** » Sun Aug 26, 2001 2:24 pm

Also make GlobalmaxTcpWindowSive blank or the same as RWIN

Quick speed test Right here

Lobo · Post by **Lobo** » Sun Aug 26, 2001 2:34 pm

These may be the store bought NIC settings above

ryder · Post by **ryder** » Sun Aug 26, 2001 3:01 pm

Well Lobo I tried all these different rwin settings and then tested with the quick speed test site and my old settings seem to be faster,i wiil keep trying them at different times of the day to see if this wil change,anyway not quite sure what you mean by store bought NIC settings, are you refering to the reg settings in my first post

thanks

Lobo · Post by **Lobo** » Sun Aug 26, 2001 3:06 pm

Yes I was refering to first post, and did you check analyzer to make sure RWIN changed, you have to REBOOT every time you change it

ryder · Post by **ryder** » Sun Aug 26, 2001 4:25 pm

Well Lobo I am using the 531330 Rwin setting and retested and seems to be faster in the test now, and I am reboting .
These reg settings I posted were taken from the cyber tweak install but unclear of there purpose.

These are the new settings
TCP options string = 020405b40103030401010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.
Default Receive Window (RWIN) = 531328
RWIN Scaling (RFC1323) = 4 bits
Unscaled Receive Window = 33208
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN 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:
Your RcvWindow limits you to: 21253.12 kbps (2656.64 KBytes/s) @ 200ms
Your RcvWindow limits you to: 8501.248 kbps (1062.656 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 18 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349)= 00000000

Thanks again Lobo your always a great help

Lobo · Post by **Lobo** » Sun Aug 26, 2001 4:29 pm

Sorry, I made mistake, it's 53144:)

Lobo · Post by **Lobo** » Sun Aug 26, 2001 5:24 pm

I tried all these NIC Buffer settings and went back to the ones I posted before, faster for me