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Need Help! 8000/768 Comcast Speeds


Dittoz
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Ok guys I need your help.  The Comcast man is coming to take a look at my craptastic speeds on Sunday and I need some advice before he gets here.  Those guys aren't usually the brightest bulbs in the drawer.  Here's my stats, starting with Van Buren's Sticky:

1) Windows XP, SP2 - p2p fix applied.

2) Comcast - 8000/768

3) Tweaks installed and current settings:

http://ttester.broadbandreports.com/tweak/block:385700e?verbose=1&service=cable&speed=8000&os=winXP&via=normal

4)Testmy.net:

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

Connection is:: 4053 Kbps about 4.1 Mbps (tested with 2992 kB)

Download Speed is:: 495 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Fri Sep 09 2005 19:29:10 GMT-0500 (Central Standard Time)

Bottom Line:: 72X faster than 56K 1MB download in 2.07 sec

Diagnosis: 90% + Okay : running at 95.32 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-09JZN73C8

http://nitro.ucsc.edu/ :

TCP/Web100 Network Diagnostic Tool v5.3.3d

click START to begin

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

running 10s outbound test (client to server) . . . . . 709.94Kb/s

running 10s inbound test (server to client) . . . . . . 3.29Mb/s

Your PC is connected to a Cable/DSL modem

Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

click START to re-test

WEB100 Kernel Variables:

Client: localhost/127.0.0.1

AckPktsIn: 395

AckPktsOut: 0

BytesRetrans: 5840

CongAvoid: 62

CongestionOverCount: 1

CongestionSignals: 1

CountRTT: 227

CurCwnd: 84680

CurMSS: 1460

CurRTO: 380

CurRwinRcvd: 768000

CurRwinSent: 16304

CurSsthresh: 81760

DSACKDups: 0

DataBytesIn: 0

DataBytesOut: 4143096

DataPktsIn: 0

DataPktsOut: 2839

DupAcksIn: 135

ECNEnabled: 0

FastRetran: 1

MaxCwnd: 164980

MaxMSS: 1460

MaxRTO: 670

MaxRTT: 370

MaxRwinRcvd: 768000

MaxRwinSent: 16304

MaxSsthresh: 81760

MinMSS: 1460

MinRTO: 360

MinRTT: 100

MinRwinRcvd: 48000

MinRwinSent: 16304

NagleEnabled: 1

OtherReductions: 3

PktsIn: 395

PktsOut: 2839

PktsRetrans: 4

X_Rcvbuf: 103424

RcvWinScale: 7

SACKEnabled: 3

SACKsRcvd: 52

SendStall: 0

SlowStart: 163

SampleRTT: 130

SmoothedRTT: 150

X_Sndbuf: 103424

SndWinScale: 4

SndLimTimeRwin: 0

SndLimTimeCwnd: 10101372

SndLimTimeSender: 3680

SndLimTransRwin: 0

SndLimTransCwnd: 5

SndLimTransSender: 5

SndLimBytesRwin: 0

SndLimBytesCwnd: 3879220

SndLimBytesSender: 263876

SubsequentTimeouts: 0

SumRTT: 36870

Timeouts: 0

TimestampsEnabled: 0

WinScaleRcvd: 4

WinScaleSent: 7

DupAcksOut: 0

StartTimeUsec: 999712

Duration: 10110115

c2sData: 2

c2sAck: 2

s2cData: 8

s2cAck: 3

half_duplex: 0

link: 100

congestion: 0

bad_cable: 0

mismatch: 1

spd: 0.00

bw: 3.65

loss: 0.000352237

avgrtt: 162.42

waitsec: 0.00

timesec: 10.00

order: 0.3418

rwintime: 0.0000

sendtime: 0.0004

cwndtime: 0.9996

rwin: 5.8594

swin: 64.0000

cwin: 1.2587

rttsec: 0.162423

Sndbuf: 8388608

aspd: 5.44156

Checking for mismatch on uplink

(speed > 50 [0>50], (xmitspeed < 5) [0.70<5]

(rwintime > .9) [0>.9], (loss < .01) [3.52<.01]

Checking for excessive errors condition

(loss/sec > .15) [3.52>.15], (cwndtime > .6) [0.99>.6],

(loss < .01) [3.52<.01], (MaxSsthresh > 0) [81760>0]

Checking for 10 Mbps link

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

(xmitspeed < 9.5) [0.70<9.5] (loss < .01) [3.52<.01], (mylink > 0) [3.0>0]

Checking for Wireless link

(sendtime = 0) [4.0E=0], (speed < 5) [0<5]

(Estimate > 50 [3.65>50], (Rwintime > 90) [0>.90]

(RwinTrans/CwndTrans = 1) [0/5=1], (mylink > 0) [3.0>0]

Checking for DSL/Cable Modem link

(speed < 2) [0<2], (SndLimTransSender = 0) [5=0]

(SendTime = 0) [4.0E-4=0], (mylink > 0) [3.0>0]

Checking for half-duplex condition

(rwintime > .95) [0>.95], (RwinTrans/sec > 30) [0>30],

(SenderTrans/sec > 30) [0.5>30], OR (mylink <= 10) [3.0<=10]

Checking for congestion

(cwndtime > .02) [0.99>.02], (mismatch = 0) [1=0]

(MaxSsthresh > 0) [81760>0]

estimate = 3.65 based on packet size = 11Kbits, RTT = 162.42msec, and loss = 3.52237E-4

The theoretical network limit is 3.65 Mbps

The NDT server has a 8192.0 KByte buffer which limits the throughput to 394.03 Mbps

Your PC/Workstation has a 750.0 KByte buffer which limits the throughput to 36.07 Mbps

The network based flow control limits the throughput to 7.74 Mbps

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

Server Data reports link is 'OC-48', Server Acks report link is 'Ethernet'

Tracert & Ping Program:

The current date is: Fri 09/09/2005

The current time is: 19:32:03.26

Microsoft Windows XP [Version 5.1.2600]

Pinging testmy.net [67.18.179.85] with 32 bytes of data:

Reply from 67.18.179.85: bytes=32 time=53ms TTL=52

Reply from 67.18.179.85: bytes=32 time=44ms TTL=52

Reply from 67.18.179.85: bytes=32 time=81ms TTL=52

Reply from 67.18.179.85: bytes=32 time=85ms TTL=52

Ping statistics for 67.18.179.85:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 44ms, Maximum = 85ms, Average = 65ms

Ping Complete.

Tracing route to testmy.net [67.18.179.85]

over a maximum of 30 hops:

  1  111 ms    14 ms    13 ms  10.121.128.1

  2    16 ms    15 ms    12 ms  68.86.198.17

  3    91 ms    12 ms    17 ms  68.86.196.42

  4    18 ms    77 ms  124 ms  68.52.1.2

  5    43 ms    30 ms    46 ms  12.124.64.13

  6    51 ms    45 ms    47 ms  tbr2-p013801.attga.ip.att.net [12.123.21.101]

  7    43 ms    80 ms    49 ms  tbr1-cl1.dlstx.ip.att.net [12.122.2.89]

  8    74 ms    38 ms    48 ms  12.122.82.37

  9    54 ms    63 ms    37 ms  12.119.136.14

10    62 ms    78 ms    69 ms  vl32.dsr01.dllstx3.theplanet.com [70.85.127.61]

11    52 ms    48 ms    91 ms  dist-vlan41.dsr2-1.dllstx4.theplanet.com [70.85.127.83]

12    65 ms    44 ms    67 ms  gig1-0-1.tp-car9-1.dllstx4.theplanet.com [67.18.116.69]

13    74 ms    65 ms    48 ms  85.67-18-179.reverse.theplanet.com [67.18.179.85]

Trace complete.

5) Only "Client for Microsoft Networks" and "Internet Protocol (TCP/IP)" are installed.

6) Nothing is checked and I use Firefox.

7) Connected via Ethernet.  NIC Media Type is set to 10Mb, Half-Duplex.  I do not use a router.

8) Power cycled many times.

9) No Spyware or Adware on my PC, according to Spybot S&D and Ad Aware.

10) Using no Firewall.

11) Using no Firewall.

12) No Viruses.

13) ALL windows updates installed.

14) CCleaner run and problems resolved.

15) VanBuren's setting's installed.  No noticeable difference.

Ok and now here are my actual  readings from http://192.168.100.1

Frequency 693000000 Hz Locked

Signal to Noise Ratio 32 dB

Power Level -3 dB

The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value

Channel ID 1

Frequency 30000000 Hz Ranged

Power Level 48 dBmV

I truly am lost guys.  Any and all advice will greatly be appreciated.  Thanks, and sorry about the long post, but I hope it provides some details for you. 

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I've tried all the settings...Here are the results...

10Mb Half Duplex:

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

Connection is:: 4216 Kbps about 4.2 Mbps (tested with 2992 kB)

Download Speed is:: 515 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Fri Sep 09 2005 21:02:40 GMT-0500 (Central Standard Time)

Bottom Line:: 75X faster than 56K 1MB download in 1.99 sec

Diagnosis: 90% + Okay : running at 99.15 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-FLGQVH1J0

http://nitro.ucsc.edu/

TCP/Web100 Network Diagnostic Tool v5.3.3d

click START to begin

Another client is currently being served, your test will begin within 45 seconds

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

running 10s outbound test (client to server) . . . . . 413.41Kb/s

running 10s inbound test (server to client) . . . . . . 3.35Mb/s

Your PC is connected to a Cable/DSL modem

Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

10Mb Full Duplex

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

Connection is:: 57 Kbps about 0.1 Mbps (tested with 579 kB)

Download Speed is:: 7 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Fri Sep 09 2005 21:09:28 GMT-0500 (Central Standard Time)

Bottom Line:: 1X faster than 56K 1MB download in 146.29 sec

Diagnosis: May need help : running at only 1.34 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-YBPSOVDK6

click START to re-test

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

running 10s outbound test (client to server) . . . . . 456.60Kb/s

running 10s inbound test (server to client) . . . . . . 92.14kb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

click START to re-test

100Mb Half Duplex

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

Connection is:: 4205 Kbps about 4.2 Mbps (tested with 2992 kB)

Download Speed is:: 513 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Fri Sep 09 2005 21:10:44 GMT-0500 (Central Standard Time)

Bottom Line:: 75X faster than 56K 1MB download in 2 sec

Diagnosis: 90% + Okay : running at 98.89 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-9T3KVPMHF

click START to re-test

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

running 10s outbound test (client to server) . . . . . 331.64Kb/s

running 10s inbound test (server to client) . . . . . . 2.66Mb/s

Your PC is connected to a Cable/DSL modem

Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

click START to re-test

100Mb Full  Duplex

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

Connection is:: 2137 Kbps about 2.1 Mbps (tested with 2992 kB)

Download Speed is:: 261 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Fri Sep 09 2005 21:13:19 GMT-0500 (Central Standard Time)

Bottom Line:: 38X faster than 56K 1MB download in 3.92 sec

Diagnosis: May need help : running at only 50.26 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-U4WEKRMPO

click START to re-test

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

running 10s outbound test (client to server) . . . . . 471.71Kb/s

running 10s inbound test (server to client) . . . . . . 6.04Mb/s

Your PC is connected to a Cable/DSL modem

Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

click START to re-test

Auto Detect

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

Connection is:: 5831 Kbps about 5.8 Mbps (tested with 2992 kB)

Download Speed is:: 712 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Fri Sep 09 2005 21:16:35 GMT-0500 (Central Standard Time)

Bottom Line:: 104X faster than 56K 1MB download in 1.44 sec

Diagnosis: Awesome! 20% + : 37.14 % faster than the average for host (comcast.net)

Validation Link:: https://testmy.net/stats/id-UE46HWING

click START to re-test

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

running 10s outbound test (client to server) . . . . . 677.70Kb/s

running 10s inbound test (server to client) . . . . . . 4.92Mb/s

Your PC is connected to a Cable/DSL modem

Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex

click START to re-test

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Oh well I've got one more question too.  We just moved in June to the new house we're in now.  I have never had Comcast come out to this house before, I set the internet up myself.  I know there is a box outside on the side of the house that controls the frequencies of the different cable lines coming into the house, and I think the cable modem is supposed to be on the highest frequencies.  So what do the different frequencies mean?  And how big of a difference will it make for my cable modem to be on the higher frequency? 

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Ok.  Comcast man just left.  He checked the box outside, there was an old splitter on there which he replaced with a new one, and the entire box was soaking wet.  The cables that he replaced had rust in them.  He told me to wait about an hour before testing it (he was going to call comcast and have them do some things first) then try it.  I'll post the results in an hour.  I hope this fixes it!

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Here are the new results after Van Buren's 6000/768. 

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

Connection is:: 7572 Kbps about 7.6 Mbps (tested with 12160 kB)

Download Speed is:: 924 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Sun Sep 11 2005 11:40:47 GMT-0500 (Central Standard Time)

Bottom Line:: 135X faster than 56K 1MB download in 1.11 sec

Diagnosis: Awesome! 20% + : 77.7 % faster than the average for host (comcast.net)

Validation Link:: https://testmy.net/stats/id-JQHM2SAPW

Obviously better from the other day.  I've had a couple of tests get to 8.0 and then I have some tests that don't get out of the 5's.  Why am I seeing the inconsistency? 

Here's my speakeasy results from the Atlanta server (I'm in Nashville).

Download : 7744Kbps

Upload: 647Kbps

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Tracing route to testmy.net [67.18.179.85]

over a maximum of 30 hops:

  0  dittoz.hsd1.tn.Comcast.net. [xx.xx.xx.xxx]

  1  10.121.128.1

  2  68.86.198.17

  3  68.86.196.42

  4  68.52.1.2

  5  12.124.64.13

  6  tbr2-p013801.attga.ip.att.net [12.123.21.101]

  7  tbr1-cl1.dlstx.ip.att.net [12.122.2.89]

  8  12.122.82.37

  9  12.119.136.14

10  vl32.dsr01.dllstx3.theplanet.com [70.85.127.61]

11  dist-vlan41.dsr2-1.dllstx4.theplanet.com [70.85.127.83]

12  gig1-0-1.tp-car9-1.dllstx4.theplanet.com [67.18.116.69]

13  85.67-18-179.reverse.theplanet.com [67.18.179.85]

Computing statistics for 325 seconds...

            Source to Here  This Node/Link

Hop  RTT    Lost/Sent = Pct  Lost/Sent = Pct  Address

  0                                          dittoz.hsd1.tn.Comcast.net. [xx.xx

.xx.xxx]

                                0/ 100 =  0%  |

  1  106ms    1/ 100 =  1%    1/ 100 =  1%  10.121.128.1

                                0/ 100 =  0%  |

  2  114ms    0/ 100 =  0%    0/ 100 =  0%  68.86.198.17

                                0/ 100 =  0%  |

  3  99ms    0/ 100 =  0%    0/ 100 =  0%  68.86.196.42

                                0/ 100 =  0%  |

  4  125ms    0/ 100 =  0%    0/ 100 =  0%  68.52.1.2

                                0/ 100 =  0%  |

  5  118ms    1/ 100 =  1%    1/ 100 =  1%  12.124.64.13

                                0/ 100 =  0%  |

  6  ---    100/ 100 =100%  100/ 100 =100%  tbr2-p013801.attga.ip.att.net [12.

123.21.101]

                                0/ 100 =  0%  |

  7  ---    100/ 100 =100%  100/ 100 =100%  tbr1-cl1.dlstx.ip.att.net [12.122.

2.89]

                                0/ 100 =  0%  |

  8  ---    100/ 100 =100%  100/ 100 =100%  12.122.82.37

                                0/ 100 =  0%  |

  9  132ms    64/ 100 = 64%    64/ 100 = 64%  12.119.136.14

                                0/ 100 =  0%  |

10  ---    100/ 100 =100%  100/ 100 =100%  vl32.dsr01.dllstx3.theplanet.com [

70.85.127.61]

                                0/ 100 =  0%  |

11  ---    100/ 100 =100%  100/ 100 =100%  dist-vlan41.dsr2-1.dllstx4.theplan

et.com [70.85.127.83]

                                0/ 100 =  0%  |

12  122ms    1/ 100 =  1%    1/ 100 =  1%  gig1-0-1.tp-car9-1.dllstx4.theplan

et.com [67.18.116.69]

                                0/ 100 =  0%  |

13  150ms    0/ 100 =  0%    0/ 100 =  0%  85.67-18-179.reverse.theplanet.com

[67.18.179.85]

Trace complete.

Hmm...what's up with that one that has 64% loss??

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And here are my last several speed tests.

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

Connection is:: 1602 Kbps about 1.6 Mbps (tested with 12160 kB)

Download Speed is:: 196 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Sun Sep 11 2005 13:50:20 GMT-0500 (Central Standard Time)

Bottom Line:: 29X faster than 56K 1MB download in 5.22 sec

Diagnosis: May need help : running at only 37.59 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-WXBLTUSC0

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

Connection is:: 1175 Kbps about 1.2 Mbps (tested with 12160 kB)

Download Speed is:: 143 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Sun Sep 11 2005 13:52:34 GMT-0500 (Central Standard Time)

Bottom Line:: 21X faster than 56K 1MB download in 7.16 sec

Diagnosis: May need help : running at only 27.57 % of your hosts average (comcast.net)

Validation Link:: https://testmy.net/stats/id-UFQ0261JH

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

Connection is:: 1330 Kbps about 1.3 Mbps (tested with 12160 kB)

Download Speed is:: 162 kB/s

Tested From:: https://testmy.net/ (server2)

Test Time:: Sun Sep 11 2005 13:54:13 GMT-0500 (Central Standard Time)

Bottom Line:: 24X faster than 56K 1MB download in 6.32 sec

Diagnosis: May need help : running at only 31.21 % of your hosts average (comcast.net)

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

Speakeasy:

Download Speed: 5648 kbps (706 KB/sec transfer rate)

Upload Speed: 326 kbps (40.8 KB/sec transfer rate)

Download Speed: 2609 kbps (326.1 KB/sec transfer rate)

Upload Speed: 322 kbps (40.3 KB/sec transfer rate)

Download Speed: 3679 kbps (459.9 KB/sec transfer rate)

Upload Speed: 329 kbps (41.1 KB/sec transfer rate)

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0/ 100 =  0%  |

  1  106ms    1/ 100 =  1%    1/ 100 =  1%  10.121.128.1

106 ms on average for your first hop is way too high, i think you have a problem with modem signal or modem, call your ISP and let them check that out

also ask em why you have 64% loss against 12.119.136.14

ping -n 20 12.119.136.14

Skickar signaler till 12.119.136.14 med 32 byte data:

Svar fr

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Tier 2 woman said "Crap, your connection is horrible".  I said "Thanks, I know".  Anywho they're going to send someone else out on Tuesday. Said they would probably replace the cable lines in the house.  House is only 6 years old, but they said sometimes the contractors use the cheapest of the cheap.  So we'll see how that goes.  She said the problem is packet loss before it even gets to the modem.  So with that conclusion, I guess I can quit trying to fix it through tweaks  :roll:

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I hope you dont mind answering a few questions for me:

1. Did you have download tests on Testmy.net that hanged during testing?  Did these tests give irratic readings depending on the wheather the download testing hung?

2. What OS do you have XP, What?  If you have XP did you read the post: http://www.testmy.net/forum/t-8087.0. 

3. Did you look at your Cable Modem web page and what was your Download Power Level? For comcast it should be between (for best results) -15 to 0.  What was your Upstream Power Level?  For comast it should be no higher than 50.3.

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1.  Sometimes download tests on Testmy.net have hanged.  If by hanging up you mean it will start the percentage bar, and then pause at say 18% for a second or two and then continue on.  And yes the readings were lower if the test did pause.

2.  I do have XP.  And I have read that post, I wasn't able to find anything that would affect my performance though.  (CCleaner helps fix those problems)

3.  Here is a paste of my settings.

Frequency 693000000 Hz Locked

Signal to Noise Ratio 34 dB

Power Level -2 dB

The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value

Channel ID 1

Frequency 30000000 Hz Ranged

Power Level 46 dBmV

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