Help with tweaking.

[kipin]

How would I go about tweaking my connection to produce better results on Win98?

Here is the result of my TCP/IP analyzer.

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Mon Sep 09 22:43:25 2002.



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

TCP options string = 020405b401010402

MTU = 1500
MTU is fully optimized for broadband.

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

Default Receive Window (RWIN) = 64240
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 64240
RWIN is 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)

bandwidth * delay product:
Your RcvWindow limits you to: 2569.6 kbps (321.2 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1027.84 kbps (128.48 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 30 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000


I typically recieve around 200 KB/s on downloads. My Upload speeds are much worse, around 15 KB/s, and I understand that uploads can't really be changed much.

Any tips for CableNut settings, or my registry that could bump my speed up a bit?

[mnosteele52]

What are your ISPs caps?:)

[kipin]

How would I go about figuring that out? I have basic cable internet from Comcast...The caps should be somewhat standard, correct?

If you want, I could call Comcast tech and figure that part out if you'd like.

[mnosteele52]

OK Comcast is 1500/128, if you are getting 200 kilobytes on downloads you are above your caps, you might try adding the following to Cablenut:

BcastNameQueryCount - 1
BcastQueryTimeout - 100
BSDUrgent - 1
CacheTimeout - 600000
DefaultRecvWindow - 64240
DefaultTTL - 64
EnableDNS - 0
GlobalMaxTcpWindoSize - 64240
KeepAliveInterval - 500
KeepAliveTime - 14400000
Lanabase - 0
LocalCopyMade - 1
MaxConnections - 64
MaxConnectRetries - 5
MaxDataRetries - 64
NameTableSize - 255
NameSrvQueryTimeout - 100
PMTUBlackHoleDetect - 0
PMTUDiscovery - 1
RoutingBufSize - 146432
RoutingPackets - 100
SackOpts - 1
SessionKeepAlive - 7200
SessionTableSize - 255
Size/Small/Medium/Large - 3
Tcp1323Opts - 0
TcpTimedWaitDelay - 30
MaxDupAcks - 2
DefaultTOS - 92
IGMPLevel - 2
MaxConnectionsPer1_0Server - 20
MaxConnectionsPerServer - 10

Also your upload speed is fine 15 kilobytes is 120 kilobits so you are right at your caps.:) :D

[kipin]

Hmm, it appears my downloads actually slowed down a bit with the tweaks...any one individual tweak that would do that?

Previously I had my tweak for cable nut set as the default Win98 one, I believe all I changed from that was the amount of max connections from 1000, to your 64. All the others were either new, or the same.

Right now I'm getting around 170-180 KB/s

[mnosteele52]

Nothing should have slowed anything down, 170-180 seems more accurate for your caps, try reverting back to your previous settings and see if it helps.:) :D