Slow DSL

[Deastbrook]

My system:

Windows XP

SpyBot

AdAware

Microsoft anti-spyware

CCleaner

Opera Browser

DSL - advertized 3mbs download

Have Cablenut Installed

Here is my test:

::.. Download Stats ..:::

Connection is:: 1389 Kbps about 1.4 Mbps (tested with 2992 kB)

Download Speed is:: 170 kB/s

Tested From:: https://testmy.net (server1)

Test Time:: Tue, 07 Feb 2006 23:20:01 GMT-0500

Bottom Line:: 25X faster than 56K 1MB download in 6.02 sec

Diagnosis: May need help : running at only 29.47 % of your hosts average (verizon.net)

Validation Link:: https://testmy.net/stats/id-6W7BGJMS1

Only 30% of Hosts average.

Please help.

Thanks

[trogers]

Post up load speed too. Test here and post:

https://www.speedguide.net/analyzer.php

[Deastbrook]

TCP options string = 020405ac01010402

MTU = 1492

MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1452

MSS is optimized for PPPoE DSL broadband. If not, consider raising your MTU value.

Default TCP Receive Window (RWIN) = 63888

RWIN Scaling (RFC1323) = 0 bits

Unscaled TCP Receive Window = 63888

RWIN is a multiple of MSS

Other values for RWIN that might work well with your current MTU/MSS:

511104 (MSS x 44 * scale factor of

255552 (MSS x 44 * scale factor of 4)

127776 (MSS x 44 * scale factor of 2)

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 2555.52 kbps (319.44 KBytes/s) @ 200ms

Your TCP Window limits you to: 1022.208 kbps (127.776 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 57 hops

TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0

[trogers]

Your present setting should give you higher test speed than 1.4 Mbps. Perhaps your system have some other problems. Please test here and post results of STATISTICS and MORE DETAILS:

http://nitro.ucsc.edu/

[Deastbrook]

TCP/Web100 Network Diagnostic Tool v5.3.3d

click START to begin

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 422.68Kb/s

running 10s inbound test (server to client) . . . . . . 1.26Mb/s

Your PC is connected to a Cable/DSL modem

Information: The receive buffer should be 137.25 Kbytes to maximize throughput

I'm not sure what other details you mean. Could you give me an idea.

Thanks

[trogers]

After the test is completed, you will see 2 buttons below the Test Box. Click them and you will get the 2 reports to post here.

[Deastbrook]

WEB100 Kernel Variables:

Client: localhost/127.0.0.1

AckPktsIn: 559

AckPktsOut: 0

BytesRetrans: 5808

CongAvoid: 438

CongestionOverCount: 0

CongestionSignals: 1

CountRTT: 513

CurCwnd: 53724

CurMSS: 1452

CurRTO: 560

CurRwinRcvd: 63888

CurRwinSent: 16304

CurSsthresh: 31944

DSACKDups: 0

DataBytesIn: 0

DataBytesOut: 1573968

DataPktsIn: 0

DataPktsOut: 1084

DupAcksIn: 43

ECNEnabled: 0

FastRetran: 1

MaxCwnd: 65340

MaxMSS: 1452

MaxRTO: 560

MaxRTT: 340

MaxRwinRcvd: 63888

MaxRwinSent: 16304

MaxSsthresh: 31944

MinMSS: 1452

MinRTO: 380

MinRTT: 120

MinRwinRcvd: 63888

MinRwinSent: 16304

NagleEnabled: 1

OtherReductions: 1

PktsIn: 559

PktsOut: 1084

PktsRetrans: 4

X_Rcvbuf: 103424

RcvWinScale: 2147483647

SACKEnabled: 3

SACKsRcvd: 45

SendStall: 0

SlowStart: 61

SampleRTT: 330

SmoothedRTT: 330

X_Sndbuf: 103424

SndWinScale: 2147483647

SndLimTimeRwin: 592152

SndLimTimeCwnd: 9462804

SndLimTimeSender: 2586

SndLimTransRwin: 1

SndLimTransCwnd: 2

SndLimTransSender: 1

SndLimBytesRwin: 40656

SndLimBytesCwnd: 1533312

SndLimBytesSender: 0

SubsequentTimeouts: 0

SumRTT: 131890

Timeouts: 0

TimestampsEnabled: 0

WinScaleRcvd: 2147483647

WinScaleSent: 2147483647

DupAcksOut: 0

StartTimeUsec: 753126

Duration: 10060242

c2sData: 2

c2sAck: 2

s2cData: 9

s2cAck: 2

half_duplex: 0

link: 100

congestion: 0

bad_cable: 0

mismatch: 0

spd: 0.00

bw: 1.42

loss: 0.000922509

avgrtt: 257.10

waitsec: 0.00

timesec: 10.00

order: 0.0769

rwintime: 0.0589

sendtime: 0.0003

cwndtime: 0.9409

rwin: 0.4874

swin: 0.7891

cwin: 0.4985

rttsec: 0.257096

Sndbuf: 103424

aspd: 4.07543

Checking for mismatch on uplink

(speed > 50 [0>50], (xmitspeed < 5) [0.36<5]

(rwintime > .9) [0.05>.9], (loss < .01) [9.22<.01]

Checking for excessive errors condition

(loss/sec > .15) [9.22>.15], (cwndtime > .6) [0.94>.6],

(loss < .01) [9.22<.01], (MaxSsthresh > 0) [31944>0]

Checking for 10 Mbps link

(speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0]

(xmitspeed < 9.5) [0.36<9.5] (loss < .01) [9.22<.01], (mylink > 0) [3.0>0]

Checking for Wireless link

(sendtime = 0) [3.0E=0], (speed < 5) [0<5]

(Estimate > 50 [1.42>50], (Rwintime > 90) [0.05>.90]

(RwinTrans/CwndTrans = 1) [1/2=1], (mylink > 0) [3.0>0]

Checking for DSL/Cable Modem link

(speed < 2) [0<2], (SndLimTransSender = 0) [1=0]

(SendTime = 0) [3.0E-4=0], (mylink > 0) [3.0>0]

Checking for half-duplex condition

(rwintime > .95) [0.05>.95], (RwinTrans/sec > 30) [0.1>30],

(SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10]

Checking for congestion

(cwndtime > .02) [0.94>.02], (mismatch = 0) [0=0]

(MaxSsthresh > 0) [31944>0]

estimate = 1.42 based on packet size = 11Kbits, RTT = 257.1msec, and loss = 9.22509E-4

The theoretical network limit is 1.42 Mbps

The NDT server has a 101.0 KByte buffer which limits the throughput to 3.06 Mbps

Your PC/Workstation has a 62.0 KByte buffer which limits the throughput to 1.89 Mbps

The network based flow control limits the throughput to 1.93 Mbps

Client Data reports link is 'T1', Client Acks report link is 'T1'

Server Data reports link is '10 Gig', Server Acks report link is 'T1'

[trogers]

"estimate = 1.42 based on packet size = 11Kbits, RTT = 257.1msec, and loss = 9.22509E-4

The theoretical network limit is 1.42 Mbps

The NDT server has a 101.0 KByte buffer which limits the throughput to 3.06 Mbps

Your PC/Workstation has a 62.0 KByte buffer which limits the throughput to 1.89 Mbps

The network based flow control limits the throughput to 1.93 Mbps"

You are from overseas? Your RTT = 257 ms and RWIN setting at 63888 limits throughput to less than 2 Mbps.

Try this ccs file.

[Deastbrook]

It doesn't seem to have helped. Here are the results from the latest download test:

:::.. Download Stats ..:::

Connection is:: 1224 Kbps about 1.2 Mbps (tested with 2992 kB)

Download Speed is:: 149 kB/s

Tested From:: https://testmy.net (server1)

Test Time:: Wed, 08 Feb 2006 19:00:32 GMT-0500

Bottom Line:: 22X faster than 56K 1MB download in 6.87 sec

Diagnosis: May need help : running at only 25.96 % of your hosts average (verizon.net)

Validation Link:: https://testmy.net/stats/id-WUNVKPGA6

And actually I am not from overseas but from New York. Is my connection that bad?

[trogers]

Your RTT value is too high for USA.

Carry out a Ping and a Traceroute to check where the high delay is.   

[Deastbrook]

I'm sorry for my ignorance but how do you get a ping and traceroute?

[trogers]

Go to this link and check the box to select the test. Key in 'www.testmy.net' into the white box at the bottom and click 'go'

[trogers]

Sorry! Here is the link:

https://www.speedguide.net/networktools.php

[Deastbrook]

Is this right?

The current date is: Wed 02/08/2006

The current time is: 19:43:29.32

Microsoft Windows XP [Version 5.1.2600]

Pinging testmy.net [67.18.17] with 32 bytes of data:

Reply from 67.18.17: bytes=32 time=67ms TTL=50

Reply from 67.18.17: bytes=32 time=66ms TTL=50

Reply from 67.18.17: bytes=32 time=66ms TTL=50

Reply from 67.18.17: bytes=32 time=67ms TTL=50

Reply from 67.18.17: bytes=32 time=65ms TTL=50

Reply from 67.18.17: bytes=32 time=67ms TTL=50

Reply from 67.18.17: bytes=32 time=66ms TTL=50

Reply from 67.18.17: bytes=32 time=66ms TTL=50

Reply from 67.18.17: bytes=32 time=66ms TTL=50

Reply from 67.18.17: bytes=32 time=66ms TTL=50

Reply from 67.18.17: bytes=32 time=66ms TTL=50

Reply from 67.18.17: bytes=32 time=67ms TTL=50

Ping statistics for

Packets: Sent = 12, Received = 12, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 65ms, Maximum = 67ms, Average = 66ms

Ping Complete.

Tracing route to testmy.net

over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms dslrouter [192.168.1.1]

2 28 ms 26 ms 26 ms 10.32.103.1

3 26 ms 26 ms 26 ms 130.81.10.45

4 33 ms 26 ms 28 ms 130.81.18.90

5 27 ms 27 ms 26 ms so-7-0-0-0.PEER-RTR1.NY111.verizon-gni.net [130.81.17.131]

6 26 ms 28 ms 27 ms 65.59.196.17

7 26 ms 26 ms 27 ms ae-1-53.bbr1.NewYork1.Level3.net [4.68.97.65]

8 65 ms 63 ms 65 ms ae-0-0.bbr1.Dallas1.Level3.net [64.159.1.109]

9 65 ms 65 ms 65 ms ae-13-51.car3.Dallas1.Level3.net [4.68.122.15]

10 65 ms 65 ms 66 ms 4.78.221.146

11 65 ms 65 ms 65 ms vl32.dsr02.dllstx3.theplanet.com [70.85.127.62]

12 65 ms 66 ms 65 ms vl42.dsr02.dllstx4.theplanet.com [70.85.127.91]

13 66 ms 65 ms 65 ms gi1-0-2.car17.dllstx4.theplanet.com [67.18.11]

14 66 ms 68 ms 66 ms 85.67-18-179.reverse.theplanet.com [67.18.17]

Trace complete.

[trogers]

Oops! It is a reverse Ping and Traceroute.

Do not key in 'www.testmy.net into the white box. When you get to this link, there will be numbers in the white box which is your IP address. This is the IP address you want to Ping and Traceroute to.

Before you copy the results and post them into this forum, blank out the last few digits of your IP address.

[Deastbrook]

This is my ping results:

PING 68.161.1 (68.161.1) 56(84) bytes of data.

64 bytes from 68.161.17: icmp_seq=1 ttl=57 time=106 ms

64 bytes from 68.161.17: icmp_seq=2 ttl=57 time=33.7 ms

64 bytes from 68.161.17: icmp_seq=3 ttl=57 time=34.4 ms

64 bytes from 68.161.17: icmp_seq=4 ttl=57 time=34.5 ms

64 bytes from 68.161.17: icmp_seq=5 ttl=57 time=33.1 ms

--- 68.161.17 ping statistics ---

5 packets transmitted, 5 received, 0% packet loss, time 4046ms

rtt min/avg/max/mdev = 33.194/48.459/106.389/28.969 ms

This is all I get for the tracer test:

1  63-217-30-94.sdsl.cais.net (63.217.30.94)  0.311 ms  0.299 ms  0.242 ms

2  pos8-0.cr05.ash01.pccwbtn.net (63.218.44.53)  0.311 ms  0.226 ms  0.207 ms

3  pos6-2.br02.ash01.pccwbtn.net (63.218.44.74)  0.447 ms  0.364 ms  0.350 ms

4  verizon.ge6-2.br02.ash01.pccwbtn.net (63.218.94.22)  4.865 ms  0.807 ms  0.763 ms

5  so-6-1-0-0.BB-RTR1.RES.verizon-gni.net (130.81.17.176)  1.118 ms  0.799 ms  0.661 ms

6  so-7-2-0-0.BB-RTR1.NY325.verizon-gni.net (130.81.8.254)  7.274 ms  7.675 ms  7.309 ms

7  130.81.18.89 (130.81.18.89)  7.360 ms  11.623 ms  7.570 ms

8  130.81.10.42 (130.81.10.42)  7.637 ms  7.954 ms  7.732 ms

9  * * *

10  * * *

11  * * *

12  * * *

13  * * *

14  * * *

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29  * * *

30  * * *

Did I do it wrong?

[trogers]

No. It is just that your ISP has put in routers that will not respond to a ping.

We have to locate the problem by elimination.

Are you using a modem and router? Is your system a wireless?

[Deastbrook]

I don't know about a router but I have an external Westell modem. I am using a dell laptop with verizon dsl. There is a splitter attached to the phone jack with one phone cable to the phone and one attached to a filter and then to the modem. Does that help?

[trogers]

And the modem is connected directly to your computer through a USB connection? Is your modem placed near any electrical device (eg. sound speakers, telephone/fax, directly on top of your comp tower...)?

[Deastbrook]

Its connected through an ethernet cable. Actually, there was a cordless phone near the modem that I just moved to the other side of the rooom. However, nothing has changed regarding the traceroute test.

[trogers]

Do this test again and just post the last 2 paragraphs of MORE DETAILS:

http://nitro.ucsc.edu/

[Deastbrook]

Checking for mismatch on uplink

(speed > 50 [0>50], (xmitspeed < 5) [0.42<5]

(rwintime > .9) [0.86>.9], (loss < .01) [1.0E<.01]

Checking for excessive errors condition

(loss/sec > .15) [1.0E>.15], (cwndtime > .6) [0.13>.6],

(loss < .01) [1.0E<.01], (MaxSsthresh > 0) [0>0]

Checking for 10 Mbps link

(speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0]

(xmitspeed < 9.5) [0.42<9.5] (loss < .01) [1.0E<.01], (mylink > 0) [3.0>0]

Checking for Wireless link

(sendtime = 0) [3.0E=0], (speed < 5) [0<5]

(Estimate > 50 [29.73>50], (Rwintime > 90) [0.86>.90]

(RwinTrans/CwndTrans = 1) [1/1=1], (mylink > 0) [3.0>0]

Checking for DSL/Cable Modem link

(speed < 2) [0<2], (SndLimTransSender = 0) [1=0]

(SendTime = 0) [3.0E-4=0], (mylink > 0) [3.0>0]

Checking for half-duplex condition

(rwintime > .95) [0.86>.95], (RwinTrans/sec > 30) [0.1>30],

(SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10]

Checking for congestion

(cwndtime > .02) [0.13>.02], (mismatch = 0) [0=0]

(MaxSsthresh > 0) [0>0]

estimate = 29.73 based on packet size = 11Kbits, RTT = 372.65msec, and loss = 1.0E-6

The theoretical network limit is 29.73 Mbps

The NDT server has a 101.0 KByte buffer which limits the throughput to 2.11 Mbps

Your PC/Workstation has a 62.0 KByte buffer which limits the throughput to 1.30 Mbps

The network based flow control limits the throughput to 1.33 Mbps

Client Data reports link is 'T1', Client Acks report link is 'T1'

Server Data reports link is '10 Gig', Server Acks report link is 'T1'

[trogers]

RTT = 372.65msec

This value has got higher than the earlier 257 ms.

Seems to me that you have problem in line quality. Most common source is from some form of electromagnetic interference (EMI) affecting your phone and connection lines or modem. Check to see if you have anything that may give out strong source of EMI?

Last week, we had a guy here whose line was affected by his heat pump located on the other side of the wall.

[Deastbrook]

The desk the computer is on is by an empty wall. There really is nothing that I can see that could be a source of EMI.

[trogers]

what is on the other side of the wall? To test if there is EMI near to your modem and connection, turn off your comp, monitor and modem and then use a cordless phone near to your connection and modem and listen if your phone gives out static hiss.