How does this look [Archive] - SpeedGuide.net Broadband Community

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mfitzs
02-05-02, 03:21 AM
This is what Adelphia suggests to use. Its's thier so callled "BOOST". I'm really not sure what they cap at? Any one out there know? I'm in Ohio.

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Tue Feb 05 03:15:37 2002.



SpeedGuide.net TCP/IP Analyzer
TCP properties for IP =
Note: Read the FAQ if the above is not your IP address.
Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows 98)

TCP options string = 020405b4010303030101080a000000000000000001010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1448, which is less than MSS because of Timestamps, or other TCP/IP options used.

Default Receive Window (RWIN) = 372296
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 46537
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: 14891.84 kbps (1861.48 KBytes/s) @ 200ms
Your RcvWindow limits you to: 5956.736 kbps (744.592 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = OFF

Time to live left = 48 hops
TTL value is ok.

Timestamps (RFC1323) = ON
Note: Timestamps add 12 bytes to the TCP header of each packet, reducing the space available for useful data.

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000




8311 connections tested since 03.10.2001.
Analyzer version: Beta 0.99

funky
02-05-02, 03:26 AM
It seens intresting. Do you feel a boost realisticly? The Rwin is not a multiple of the MSS but that's okay. I am sure they have reasons why especially with an value that's out of the blue. Unless you are getting bad speeds with the rwin, which you could probably end up, revert back to 256960. :)

mfitzs
02-05-02, 03:41 AM
I was getting about 330KB/sec from Fileplanet in L.A.. I was more like 275 before. So whats the thought on what they cap at?? Thanks..

funky
02-05-02, 03:48 AM
2mb or 1.5mb down is more likely. What is your previous Rwin?

mfitzs
02-05-02, 04:16 AM
256960

Vesuvius
02-05-02, 05:07 AM
I thought it was common practice to turn them timestamps off? :D

Like I always say, if it's faster, don't try to figure out why just try to keep accelerating :P

Lobo
02-05-02, 08:44 AM
With a 233 pentium, I would take the best speed I could get, try it with time stamps off Tcp1323Opts to 1 not 3:)