shadowpuck

Cable Modem Testing

12 posts in this topic

I hope everyone doesn't mind my first post being a request for assistance/interpretation of results.

I've been using testmy.net for a while now and always had accurate results.

All of a sudden, however, I'm getting some bizarre results.

My ISP, of course, has been helpless.

I'll save the editorial and just post up the data.

This all started late last week. I randomly ran a speed test and noticed that my speed was way off from where it normally is.

Here's a shot of what I'm used to seeing:

Wv6zA2&dual=yes&q2=L2tb3s.png

Here's a recent test result from testmy.net:

OCIevG.png

Even allowing for time of day/network congestion, that seems way off.

Another testing site (speedtest.net) going to Dallas.

1191655074.png

Again, another recent test on testmy.net

9fqLea.Za3HlB.png

The results seem to be rather erratic.

Just for comparison, since I also have a DSL connection, I tested it.

testmy.net - a few moments ago:

mr2yvx.D0yu46.png

The results with my DSL connection are almost identical no matter what test site/location I use.

Do I simply have to live with the fluctuation on the cable modem? Anything I can do? Should I call my ISP again and ask them for assistance?

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Have you tried power cycling the modem for roughly 3 minutes? It may be a bad config push. If that doesn't help than yes, I would call The isp bcause it may be node congestion which they deal with on their end.

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Do you have any splitters in the cable lines? Try bypassing them and see what you get. Power cycle the router too if you have one.

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shadowpuck, I'd recommend first that you run the Scheduled Speed Test on a low interval, 30 minutes to 1 hour for instance. Let that run for a day or so and that will give us better data to work with.

Many times it boils down to net congestion. Just because you tested elsewhere during the same time and got better results doesn't really mean anything. First, your route here will undoubtedly be different than another server, even in the same city... and second, because TestMy.net is far different than other tests out there. I have purposely made the tests here more resource intensive, so other problems with your computer could be to blame. But, running that scheduled test will help place the blame outside of your home.

... If we figure out that it's only happening during certain times you can then take that information to your ISP and hopefully they can figure out what the issue is.

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thank you for the suggestions; i will arrange for the hourly test and then report back on my stats.. i do suspect net congestion, just seems odd that (unless its ISP specific) I'm not seeing the same congestion on my DSL connection. I also haven't had any problems until just recently. Thus, my puzzlement.

We'll figure it out - I'll report back when I have more data.....

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forgot to answer the other question.

to my knowledge there are no splitters in the system.

i believe the connection for the cable modem is going directly from outside to the modem. i do not have cable tv or anything else and i know they installed a drop for the modem because i was here when they did it.

i just logged into the cable modem and here's what it shows:

Downstream Value

Frequency 591000000 Hz

Signal To Noise Ratio 41.4 dB

Power Level 12.4 dBmV

Upstream Value

Channel ID 3

Frequency 29000000 Hz

Power 40.2 dBmV

not sure if that tells us anything or not. i'll start the hourly test later tonight....

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just finished the full day of hourly tests.....

general trend for both down and up speeds is a general slowdown around 8pm then nearly doubling in speed after midnight.

speeds continue consistently fast until about 9am then start dropping off.

very slow speeds noted around 2-3pm unil about 9-10pm again.

all times central.

Date Type Test Score ISP / Host Server Location Test ID

Thu Mar 10 2011 @ 9:43:32 pm DN 3229 kbps - (394 kB/s) npgco.com TX 6LNiSj

Thu Mar 10 2011 @ 8:43:39 pm DN 1776 kbps - (217 kB/s) npgco.com TX VUIQEY

Thu Mar 10 2011 @ 7:43:16 pm DN 1472 kbps - (180 kB/s) npgco.com TX 9StUZc

Thu Mar 10 2011 @ 6:43:12 pm DN 1605 kbps - (196 kB/s) npgco.com TX uRcTlV

Thu Mar 10 2011 @ 5:43:21 pm DN 2026 kbps - (247 kB/s) npgco.com TX GfAJSu

Thu Mar 10 2011 @ 4:42:51 pm DN 4899 kbps - (598 kB/s) npgco.com TX e5qDf0

Thu Mar 10 2011 @ 3:42:48 pm DN 3443 kbps - (420 kB/s) npgco.com TX TYN9jL

Thu Mar 10 2011 @ 2:42:47 pm DN 2716 kbps - (332 kB/s) npgco.com TX NLlVs5

Thu Mar 10 2011 @ 1:42:40 pm DN 6912 kbps - (844 kB/s) npgco.com TX gN0cQK

Thu Mar 10 2011 @ 12:42:50 pm DN 6560 kbps - (801 kB/s) npgco.com TX 0HNjAI

Thu Mar 10 2011 @ 11:42:36 am DN 7855 kbps - (959 kB/s) npgco.com TX NAkQmi

Thu Mar 10 2011 @ 10:42:43 am DN 7427 kbps - (907 kB/s) npgco.com TX PqkwH1

Thu Mar 10 2011 @ 9:42:40 am DN 7659 kbps - (935 kB/s) npgco.com TX NTDU9G

Thu Mar 10 2011 @ 8:42:42 am DN 10050 kbps - (1227 kB/s) npgco.com TX PjSeOv

Thu Mar 10 2011 @ 7:42:33 am DN 10583 kbps - (1292 kB/s) npgco.com TX zN1HP2

Thu Mar 10 2011 @ 6:42:34 am DN 14043 kbps - (1714 kB/s) npgco.com TX CIXFYW

Thu Mar 10 2011 @ 5:42:36 am DN 11396 kbps - (1391 kB/s) npgco.com TX EkNCa9

Thu Mar 10 2011 @ 4:42:30 am DN 14166 kbps - (1729 kB/s) npgco.com TX 3r2fPc

Thu Mar 10 2011 @ 3:42:28 am DN 14171 kbps - (1730 kB/s) npgco.com TX bRTlcU

Thu Mar 10 2011 @ 2:42:27 am DN 14163 kbps - (1729 kB/s) npgco.com TX OfLSXJ

Thu Mar 10 2011 @ 1:42:26 am DN 13924 kbps - (1700 kB/s) npgco.com TX Pt3pnm

Thu Mar 10 2011 @ 12:42:44 am DN 12892 kbps - (1574 kB/s) npgco.com TX TzSktg

Wed Mar 09 2011 @ 11:42:29 pm DN 7006 kbps - (855 kB/s) npgco.com TX ngXoVN

Wed Mar 09 2011 @ 10:42:31 pm DN 6083 kbps - (743 kB/s) npgco.com TX ElC92h

Wed Mar 09 2011 @ 9:42:15 pm DN 793 kbps - (97 kB/s) npgco.com TX GY8UAX

Wed Mar 09 2011 @ 8:41:58 pm DN 665 kbps - (81 kB/s) npgco.com TX geiJQC

Date Type Test Score ISP / Host Server Location Test ID

Thu Mar 10 2011 @ 9:44:06 pm UP 556 kbps - (68 kB/s) npgco.com TX dcZvGb

Thu Mar 10 2011 @ 8:44:17 pm UP 494 kbps - (60 kB/s) npgco.com TX AEIhT4

Thu Mar 10 2011 @ 7:43:51 pm UP 655 kbps - (80 kB/s) npgco.com TX PHn9EA

Thu Mar 10 2011 @ 6:43:47 pm UP 545 kbps - (67 kB/s) npgco.com TX TzmG2h

Thu Mar 10 2011 @ 5:43:55 pm UP 647 kbps - (79 kB/s) npgco.com TX zvNsRk

Thu Mar 10 2011 @ 4:43:20 pm UP 588 kbps - (72 kB/s) npgco.com TX nk5wXJ

Thu Mar 10 2011 @ 3:43:18 pm UP 571 kbps - (70 kB/s) npgco.com TX gpoNqU

Thu Mar 10 2011 @ 2:43:25 pm UP 480 kbps - (59 kB/s) npgco.com TX 3zEr9O

Thu Mar 10 2011 @ 1:43:04 pm UP 777 kbps - (95 kB/s) npgco.com TX ZHwWB1

Thu Mar 10 2011 @ 12:43:14 pm UP 720 kbps - (88 kB/s) npgco.com TX vpwFPC

Thu Mar 10 2011 @ 11:42:59 am UP 793 kbps - (97 kB/s) npgco.com TX Ss7qj2

Thu Mar 10 2011 @ 10:43:04 am UP 909 kbps - (111 kB/s) npgco.com TX jpT1Pe

Thu Mar 10 2011 @ 9:43:07 am UP 609 kbps - (74 kB/s) npgco.com TX a5B39K

Thu Mar 10 2011 @ 8:43:05 am UP 767 kbps - (94 kB/s) npgco.com TX ct7Uhj

Thu Mar 10 2011 @ 7:42:57 am UP 717 kbps - (88 kB/s) npgco.com TX H9PcSE

Thu Mar 10 2011 @ 6:42:55 am UP 910 kbps - (111 kB/s) npgco.com TX Hcfqd0

Thu Mar 10 2011 @ 5:43:01 am UP 682 kbps - (83 kB/s) npgco.com TX EZiUTp

Thu Mar 10 2011 @ 4:42:49 am UP 1001 kbps - (122 kB/s) npgco.com TX mnLUsF

Thu Mar 10 2011 @ 3:42:47 am UP 1000 kbps - (122 kB/s) npgco.com TX 4bNoDH

Thu Mar 10 2011 @ 2:42:45 am UP 1030 kbps - (126 kB/s) npgco.com TX SGaiZs

Thu Mar 10 2011 @ 1:42:47 am UP 936 kbps - (114 kB/s) npgco.com TX yU2j6l

Thu Mar 10 2011 @ 12:43:05 am UP 953 kbps - (116 kB/s) npgco.com TX PdWYFI

Wed Mar 09 2011 @ 11:42:50 pm UP 858 kbps - (105 kB/s) npgco.com TX cDBa7N

Wed Mar 09 2011 @ 10:42:53 pm UP 834 kbps - (102 kB/s) npgco.com TX v3w4me

Wed Mar 09 2011 @ 9:42:59 pm UP 592 kbps - (72 kB/s) npgco.com TX pbrXQd

Wed Mar 09 2011 @ 8:42:43 pm UP 663 kbps - (81 kB/s) npgco.com TX 6Wg7lA

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I would defiantly say an overloaded node. That's exactly what mine looked like in Iowa. Speeds were good than as the day went on got progressively worse ; especially @ night. almost unusable. Id call the ISP ask them about it.

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