need help, to improve my slow download speeds

cyberdude · Post by **cyberdude** » Tue Aug 06, 2002 5:24 pm

need help improving my download speeds as there very slow

athlon 1200
386 mb ra
broadband 1 mb connection

2002-08-06 17:22:23 EST: 371 / 247
Your download speed : 371174 bps, or 371 kbps.
A 45.3 KB/sec transfer rate.
Your upload speed : 247831 bps, or 247 kbps.

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) = 65535
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 65535
Note: Under Windows 9x, if you have RWIN set to any other value, and the Analyzer reports 65535 you might need to install the MS Vtcp386 fix.
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: 2621.4 kbps (327.675 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1048.56 kbps (131.07 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 47 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

mnosteele52 · Post by **mnosteele52** » Tue Aug 06, 2002 5:34 pm

What OS are you using?

cyberdude · Post by **cyberdude** » Tue Aug 06, 2002 6:36 pm

im useing w98 se mate

mnosteele52 · Post by **mnosteele52** » Tue Aug 06, 2002 6:49 pm

OK great, download the TCPOptimizer (in my signature) and try the following settings:

Settings tab:

select - cable modem
check - custom settings
network adapter selection - your NIC
check modify all adapters
maxmtu - 1500
TTL - 64
TCP Receive Window - 32120 or 37960 or 52560 or 64240
MTU Discovery - yes
Black Hole Detect - no
Selective Acks - yes
Max Dup ACKs - 2
TCP 1323 Options - uncheck both boxes*
(* if using TCP Receive Window of 65535 or higher check windows scaling)

Other Settings tab:

Max Connections per Server - 20
Max Connections per 1.0 Server - 40
Lan Browsing Speedup - optimized

Then select "Apply Changes" and reboot to take effect.

Also read the link in my signature Help & Tips and try my other suggestions.

cyberdude · Post by **cyberdude** » Tue Aug 06, 2002 6:59 pm

ok i already have TCPOptimizer installed but i will try the settings
and post resalts

mnosteele52 · Post by **mnosteele52** » Tue Aug 06, 2002 7:02 pm

Great, also make sure you try the other things I suggested. Your speed is pretty far off so I really don't think it's your settings. Power cycle your modem, NIC duplex mode, no proxy etc.

cyberdude · Post by **cyberdude** » Tue Aug 06, 2002 7:08 pm

how do i Power cycle your modem, NIC duplex mode, no proxy ?

mnosteele52 · Post by **mnosteele52** » Tue Aug 06, 2002 7:17 pm

It's all in the link in my signature Help & Tips.

cyberdude · Post by **cyberdude** » Tue Aug 06, 2002 7:29 pm

ok heres the resalts

2002-08-06 19:27:27 EST: 985 / 244
Your download speed : 985531 bps, or 985 kbps.
A 120.3 KB/sec transfer rate.
Your upload speed : 244200 bps, or 244 kbps

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 = 47 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

can you reccomend any other settings to get any faster?

cheers for the help mate

mnosteele52 · Post by **mnosteele52** » Tue Aug 06, 2002 7:37 pm

Well if your caps are 1MB then your are maxed out and looking great.

cyberdude · Post by **cyberdude** » Tue Aug 06, 2002 7:38 pm

ok cheers for the help mnosteele52

Lobo · Post by **Lobo** » Wed Aug 07, 2002 3:49 pm

You need this patch if Receive window is above 65535:

http://www.speedguide.net/files/vtcp386/236926USA8.EXE