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Looking for a little help

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"Your PC/Workstation has a 124.0 KByte buffer which limits the throughput to 7.06 Mbps. The network based flow control limits the throughput to 0.48 Mbps

There were 17 packets retransmitted, 23 duplicate acks received, and 28 SACK blocks received

The connection stalled 2 times due to packet loss

The connection was idle 0.72 seconds (7.19%) of the time

This connection is network limited 99.97% of the time.

Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch"

Your RWIN setting is appropriate for 5-7 Mbps bandwidth.

Seems like the problem lies in signal transmission. Could be due to a bad line or faulty cable or electrical interference on signal cables, modem, router.

Or if hardware drivers have been recently updated, problem may lie with faulty Nic, router or modem.

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Seems like the problem lies in signal transmission. Could be due to a bad line or faulty cable or electrical interference on signal cables, modem, router.

Or if hardware drivers have been recently updated, problem may lie with faulty Nic, router or modem.

Hardware drivers haven't been updated lately; haven't found new drivers for them.  Any advice on a NIC, since I plan to buy a new one anyway, just in case it has anything to do with my speed issues.  My current NIC, bought at Wal-Mart, wasn't even recognized by WinXP when I first installed it, which I thought was odd, but it worked after I formatted and reinstalled XP.

As I mentioned, I had my router disconnected during my tests, so the router isn't the issue, although it was causing it to be noticibly slower, which is why it's disconnected.  I have a D-Link DGL-4300 on order to replace my current Netgear router.

My modem is a Toshiba, supplied by the cable provider.  If replacing things I own doesn't work, I'll have them replace my modem.  I'd just buy my own, but I already have one that's pretty much worthless as it doesn't work on the network here.

I can try to change the cable from the wall to the modem to see if that changes anything since I have a lot of extra coaxial cables around.  I can also change out the cat-5 cables to see if that helps.  If it's something else, something I can't really change myself, should the cable company be able to do anything it?  If I call my provider and have them run their diagnostics, is there any chance they'll actually admit to the problem being somewhere other than in my equipment?

Thanks for the reply.  I guess there aren't any changes I can make in any of the programming/software to make a difference?

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The TCP Analyzer shows your window registry has already been tweaked to optimum settings. Only thing on the software side is to make sure you do not have spywares or similar that may leech off part of the bandwidth.

For great suggestions on hardware and cabling, our members in this forum section will be able to help:

http://www.testmy.net/forum/b-7

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I went into safe mode and did a virus and spyware scan.  Then I restarted and enabled system restore since I shut it down before the scans.  All that was before my tests were done.  My scanning software includes Symantec Anti-Virus and Spy Sweeper, both of which were free from work, but i have no idea how worthy they are.  I used to run adaware and spybot, and had something... bazooka something or another and I tried hijackthis.  I just thought it was overkill having all of that on my computer, and I never really understood hijackthis.  I'm not the most computer savvy person, so I'm open to suggestions on software.  As far as I know, however, I am virus and spyware free.

Thanks for the help so far.  Maybe I'll eventually have speeds worth the money I'm paying the cable company.

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Can you provide a traceroute? From the command prompt:

tracert testmy.net

Make sure that you don't have a firewall or any browser extensions running when you are performing a download speed test. You can also try clicking where it says to load without progress bar.

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Just for a little comparison, I disconected my PC and connected my laptop to the modem via cat-5 cable.  Here's my results with the laptop (also running WinXP SP2).

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

Connection is:: 201 Kbps about 0.2 Mbps (tested with 386 kB)

Download Speed is:: 25 kB/s

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

Test Time:: Fri Feb 17 21:50:56 EST 2006

Bottom Line:: 4X faster than 56K 1MB download in 40.96 sec

Diagnosis: May need help : running at only 4.69 % of your hosts average (rr.com)

Validation Link:: https://testmy.net/stats/id-HT6R5FAQL

TCP options string = 020405b40103030401010402

MTU = 1500MTU is fully optimized for broadband.

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

Default TCP Receive Window (RWIN) = 640000 RWIN Scaling (RFC1323) = 4 bits (scale factor of 8)Unscaled TCP Receive Window = 40000 For optimum performance, consider changing RWIN to a multiple of MSS.Other RWIN values 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 (Note this is not a speed test):Your TCP Window limits you to: 25600 kbps (3200 KBytes/s) @ 200msYour TCP Window limits you to: 10240 kbps (1280 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 54 hopsTTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

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

WEB100 Enabled Statistics:

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

running 10s outbound test (client to server) . . . . . 407.77Kb/s

running 10s inbound test (server to client) . . . . . . 261.16kb/s

------  Client System Details  ------

OS data: Name = Windows XP, Architecture = x86, Version = 5.1

Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_06

------  Web100 Detailed Analysis  ------

Cable modem/DSL/T1 link found.

Link set to Full Duplex mode

Information: throughput is limited by other network traffic.

Good network cable(s) found

Normal duplex operation found.

Web100 reports the Round trip time = 135.31 msec; the Packet size = 1460 Bytes; and

There were 23 packets retransmitted, 36 duplicate acks received, and 47 SACK blocks received

The connection stalled 2 times due to packet loss

The connection was idle 0.74 seconds (7.39%) of the time

This connection is network limited 99.97% of the time.

Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch

Web100 reports TCP negotiated the optional Performance Settings to:

RFC 2018 Selective Acknowledgment: ON

RFC 896 Nagle Algorithm: ON

RFC 3168 Explicit Congestion Notification: OFF

RFC 1323 Time Stamping: OFF

RFC 1323 Window Scaling: ON

Packet size is preserved End-to-End

Server IP addresses are preserved End-to-End

Client IP addresses are preserved End-to-End

WEB100 Kernel Variables:

Client: localhost/127.0.0.1

AckPktsIn: 151

AckPktsOut: 0

BytesRetrans: 33580

CongAvoid: 71

CongestionOverCount: 0

CongestionSignals: 10

CountRTT: 98

CurCwnd: 5840

CurMSS: 1460

CurRTO: 370

CurRwinRcvd: 640000

CurRwinSent: 16304

CurSsthresh: 2920

DSACKDups: 0

DataBytesIn: 0

DataBytesOut: 392740

DataPktsIn: 0

DataPktsOut: 269

DupAcksIn: 36

ECNEnabled: 0

FastRetran: 8

MaxCwnd: 18980

MaxMSS: 1460

MaxRTO: 470

MaxRTT: 260

MaxRwinRcvd: 640000

MaxRwinSent: 16304

MaxSsthresh: 8760

MinMSS: 1460

MinRTO: 300

MinRTT: 90

MinRwinRcvd: 40000

MinRwinSent: 16304

NagleEnabled: 1

OtherReductions: 0

PktsIn: 151

PktsOut: 269

PktsRetrans: 23

X_Rcvbuf: 103424

RcvWinScale: 7

SACKEnabled: 3

SACKsRcvd: 47

SendStall: 0

SlowStart: 28

SampleRTT: 100

SmoothedRTT: 140

X_Sndbuf: 103424

SndWinScale: 4

SndLimTimeRwin: 0

SndLimTimeCwnd: 10295394

SndLimTimeSender: 2583

SndLimTransRwin: 0

SndLimTransCwnd: 1

SndLimTransSender: 1

SndLimBytesRwin: 0

SndLimBytesCwnd: 392740

SndLimBytesSender: 0

SubsequentTimeouts: 0

SumRTT: 13260

Timeouts: 2

TimestampsEnabled: 0

WinScaleRcvd: 4

WinScaleSent: 7

DupAcksOut: 0

StartTimeUsec: 56292

Duration: 10299235

c2sData: 2

c2sAck: 2

s2cData: 9

s2cAck: 2

half_duplex: 0

link: 100

congestion: 1

bad_cable: 0

mismatch: 0

spd: 0.00

bw: 0.43

loss: 0.037174721

avgrtt: 135.31

waitsec: 0.74

timesec: 10.00

order: 0.2384

rwintime: 0.0000

sendtime: 0.0003

cwndtime: 0.9997

rwin: 4.8828

swin: 64.0000

cwin: 0.1448

rttsec: 0.135306

Sndbuf: 8388608

aspd: 1.00036

Checking for mismatch on uplink

(speed > 50 [0>50], (xmitspeed < 5) [0.40<5]

(rwintime > .9) [0>.9], (loss < .01) [0.03<.01]

Checking for excessive errors condition

(loss/sec > .15) [0.00>.15], (cwndtime > .6) [0.99>.6],

(loss < .01) [0.03<.01], (MaxSsthresh > 0) [8760>0]

Checking for 10 Mbps link

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

(xmitspeed < 9.5) [0.40<9.5] (loss < .01) [0.03<.01], (mylink > 0) [3.0>0]

Checking for Wireless link

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

(Estimate > 50 [0.43>50], (Rwintime > 90) [0>.90]

(RwinTrans/CwndTrans = 1) [0/1=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>.95], (RwinTrans/sec > 30) [0>30],

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

Checking for congestion

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

(MaxSsthresh > 0) [8760>0]

estimate = 0.43 based on packet size = 11Kbits, RTT = 135.31msec, and loss = 0.037174721

The theoretical network limit is 0.43 Mbps

The NDT server has a 8192.0 KByte buffer which limits the throughput to 473.00 Mbps

Your PC/Workstation has a 625.0 KByte buffer which limits the throughput to 36.08 Mbps

The network based flow control limits the throughput to 1.07 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'

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Results of nitro test on your laptop:

"There were 23 packets retransmitted, 36 duplicate acks received, and 47 SACK blocks received

The connection stalled 2 times due to packet loss

The connection was idle 0.74 seconds (7.39%) of the time

This connection is network limited 99.97% of the time.

Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch

The NDT server has a 8192.0 KByte buffer which limits the throughput to 473.00 Mbps

Your PC/Workstation has a 625.0 KByte buffer which limits the throughput to 36.08 Mbps

The network based flow control limits the throughput to 1.07 Mbps"

Your RWIN is set way too high. Try this ccs file with cablenut and see if you get an improvement:

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back on my PC and BrightHouse just sent someone out to replace my modem.  Here's where I'm at now...

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

Connection is:: 6211 Kbps about 6.2 Mbps (tested with 5983 kB)

Download Speed is:: 758 kB/s

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

Test Time:: Sun Feb 19 14:49:11 EST 2006

Bottom Line:: 111X faster than 56K 1MB download in 1.35 sec

Diagnosis: Awesome! 20% + : 44.98 % faster than the average for host (rr.com)

Validation Link:: https://testmy.net/stats/id-MVS90EJBD

Looks a lot better than it did before.  What a difference a properly functioning modem can make. 

Thanks for all the help.

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