1-8 KB/s????!! please help me

joesievers · Post by **joesievers** » Wed Sep 11, 2002 10:08 pm

hi, i recently got cable and am having ridiculous speed issues. we have an RCA modem plugged into a quality linksys router. there are four of us sharing it through a wireless network. im using a linksys USB adapter.

any ideas why i would be downloading at 1-8 KB/s? my usual speed is 2-6 but i get .5 KB/s as a low and 14 KB/s as a high. i live in a semi-metro area, but i think 4 KB/s on cable is scandalous, even if we are sharing. it can take up to 15-20 seconds to download a site with IE 6.0. ive used the patch from this site as well as other optimization tools.

i also have a little tool that gives me a visual representation of my connection, and it comes out as a whole bunch of extremely sharp spikes (going down to zero, then spiking up again).

here's my little diagnostic.

MTU = 1500
MTU is fully optimized for broadband.

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

Default Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 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)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4111.36 kbps (513.92 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

please help!

joesievers · Post by **joesievers** » Wed Sep 11, 2002 10:23 pm

i forgot to add that there are very frequent long pauses, between 1 and 10 seconds, where nothing downloads. so the spikes on my graph can get far apart.

i just tried the opera browser for the first time because it was supposed to be fast, but the dl speed said 2 KB/s and it took 30-40 seconds to load cbs.sportsline.com.

i also forgot to add that the other users on the network have very similar problems.

mnosteele52 · Post by **mnosteele52** » Wed Sep 11, 2002 10:44 pm

Welcome to Speedguide

, you have allot of things against you. First wireless routers aren't the best because there are many factors that can effect their performance, then you are connecting via USB...... terrible, anything for the internet that connects via USB has nothing but problems. What are your ISPs caps? No matter who it is if you are splitting it 4 ways that RWIN is way too high. To narrow down the problem try power cycling your modem (disconnect power for atleast 15 seconds) and directly connect your pc to the modem by itself and see what your speed is like, that way you will know if it's the router or not. Please post back the and let us know what you find out.

joesievers · Post by **joesievers** » Wed Sep 11, 2002 11:48 pm

well im plugged directly into the modem and... according to netmonitor, my "truespeed" is between 450 and 1200 kb/s. still hardly flying but definitely much faster. plus it tends to pause for long periods in the middle of downloads. im using cablenut's default "normal cable" registry settings. any advice (besides returning my usb adapter and buying another one of these extra long ethernet cables for myself)?

mnosteele52 · Post by **mnosteele52** » Wed Sep 11, 2002 11:54 pm

What is your average latency (ping)? If you are using the settings you posted above then you aren't using Cablenut's defualt settings, what are your ISPs caps and what OS are you using?

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:00 am

when i come out of the router i get about 1/4 the speed. didnt i see another thread about that? whats my problem?

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 12:01 am

Your not answering the questions I'm asking, I'm trying to figure out your problem and I need more information.

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:04 am

haha, you posted that while i was composing, sorry. i added cablenuts afterwards. i dont know what the caps are, unfortunately. not sure how i can find out without calling comcast. my ping... how do i check that? and its windows ME (dont laugh)

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 12:08 am

Hehehe - I had to laugh at Windows ME.... it wouldn't suprise me if that's the problem

. Anyway, Comcast's caps are 1500/128, that being the case try the following settings in Cablenut:

BcastNameQueryCount - 1
BcastQueryTimeout - 100
BSDUrgent - 1
CacheTimeout - 600000
DefaultRecvWindow - 32120
DefaultTTL - 64
EnableDNS - 0
GlobalMaxTcpWindoSize - 32120
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

Try PC Pitstops Ping Utility to check your latency.

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:14 am

hey, those are great, im back over 1000 kb/s even through the router.

Site URL Round-Trip Time (ms)
Min Max Avg
http://www.pcpitstop.com 83 247 165
http://www.mheller.com 289 289 289
http://www.byte.com 192 192 192
http://www.cern.ch 179 179 179
internic.net 69 69 69
yahoo.com 206 206 206
http://www.unisa.edu.au 302 302 302

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 12:21 am

GREAT

, those pings are ok and might be as good as you are going to get with your setup. Also over 1000kb/s is great with that setup, you might even try raising your GlobalMaxTcpWindoSize/DefaultRecvWindow to 52560 or 64240, if your speed drops then just go back to 32120..... it's a major improvement over what you had anyway.

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:23 am

hey, maybe you could tell me why i still have very high latency to battle.net and can't play my favorite game, starcraft

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 12:24 am

Most likely because of your setup..... the wireless router and USB connection.... not good for optimum latency.

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:26 am

crap! the same reg settings that were getting me over 1000 are now getting me 100-200! should it be this erratic?

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:27 am

im not on USB, im on ethernet cable

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:28 am

my roommated just bought a 100-footer and im borrowing it

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 12:28 am

You might have a line problem, a bad connection or a bad splitter somewhere. Also did you power cycle your modem earlier?

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:29 am

ive been wondering this all along. it seems like my connection speed keeps jumping around, from 0 to 2000 (it spends a lot of time at 0). is this normal at all?

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:30 am

yeah, we moved it to a different room

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 12:31 am

Nope, that is most likely a line problem that you should have your ISP come out and check the frequencies on your line.

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:31 am

i also need to test it where its not plugged in along with the TV (my selfish roommate doesnt want cables running into his room unless he cant help it)

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:32 am

ok, will do

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 12:34 am

To properly setup your cable modem the RG6 coax cable should split right where it comes into the house and have one side go directly to your modem and the other side go to all the tv's in your house splitting it as necessary, if it's not set up that way then you will experience the type of problems you are having.

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:35 am

how frustrating... when i test it now its saying around 80 kb/s when i was getting 1200 ten minutes ago!

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:36 am

right, im goin down to move it now

joesievers · Post by **joesievers** » Thu Sep 12, 2002 12:49 am

not a huge difference, but it did help. we're probably gonna call tomorrow. thanks for your help!

mnosteele52 · Post by **mnosteele52** » Thu Sep 12, 2002 1:04 am

Anytime, let me know what you find out.

joesievers · Post by **joesievers** » Sat Sep 14, 2002 9:01 pm

we found out by accident that the problem is my friend's computer. when it's on, his wireless card sucks up 97% of the bandwidth and all of the whatever it is that gives you low latency for online games =). his connection didnt necessarily seem all that fast, but when his computer is turned on we all go from 1200 kb/s and low pings to 20 kb/s and pings in the 3-4000s! we'll probably end up getting him to stop using his wireless card and to just plug in. i dont think the usb adapter or even the cable company (amazing huh?) is to blame, although there may be other minor problems with them. thanks for your help though!