CODA-4582 - Open Issues for Investigation

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I'm a Reliable Contributor
Posts: 578

Re: CODA-4582 - Open Issues for Investigation

@Adva Firmware .26T2 fixes this issues but will not be released to the public b/c as Dave noted, it is an interim test build. Firmware .27 is going to be the network-wide release but Dave is expecting the firmware in the next-2 weeks, but this firmware will be distributed to the beta testers at first..

 

So maybe in 3-4 weeks .27 will be released to the general public. 

 

I Plan to Stick Around
Posts: 274

Re: CODA-4582 - Open Issues for Investigation

last few days I am getting crazy lag spikes.  to the point where anything I watch online buffers for a moment or 2.  What would cause that?  Anyone else seeing this?

 

 

I Plan to Stick Around
Posts: 14

Re: CODA-4582 - Open Issues for Investigation

@Datalink @RogersDave

Here is the full table
I just rebooted too in order to access with a computer. Now part of my morning routine...


Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 657000000 256QAM -2.400 17 38.983
2 561000000 256QAM -0.200 2 40.946
3 567000000 256QAM -0.600 3 38.983
4 573000000 256QAM -0.900 4 40.366
5 579000000 256QAM -1.200 5 40.366
6 585000000 256QAM -0.800 6 40.366
7 591000000 256QAM -1.100 7 40.366
8 597000000 256QAM -1.700 8 40.366
9 603000000 256QAM -1.300 9 40.366
10 609000000 256QAM -1.300 10 40.366
11 615000000 256QAM -1.500 11 40.366
12 621000000 256QAM -1.200 12 40.366
13 633000000 256QAM -0.600 13 40.366
14 639000000 256QAM -1.000 14 38.983
15 645000000 256QAM -1.200 15 40.366
16 651000000 256QAM -1.700 16 38.605
17 555000000 256QAM -0.500 1 40.366
18 663000000 256QAM -2.600 18 38.983
19 669000000 256QAM -2.200 19 38.983
20 675000000 256QAM -2.400 20 38.983
21 681000000 256QAM -2.700 21 38.983
22 687000000 256QAM -2.300 22 38.983
23 693000000 256QAM -1.800 23 38.983
24 699000000 256QAM -2.000 24 38.983
25 705000000 256QAM -2.400 25 38.605
26 711000000 256QAM -3.200 26 38.605
27 717000000 256QAM -4.000 27 38.605
28 723000000 256QAM -4.200 28 38.605
29 825000000 256QAM -5.300 29 37.636
30 831000000 256QAM -5.600 30 37.636
31 837000000 256QAM -5.100 31 37.636
32 843000000 256QAM -5.300 32 37.636
Rogers Employee 4kgigabitguy
Rogers Employee
Posts: 45

Re: CODA-4582 - Open Issues for Investigation

@RyzenFX @Datalink @RogersDave @JohnBeaudin

 

Last night, I noticed my upload speed dropped dramatically on some speed tests which was odd. I've honestly have had a solid 50 Mbps upload on both wired & wireless ever since I've got Gigabit which has been over a month now. I was on a mission to find the root cause but saved it for the morning & played about 2 hours of GTA Online for PS4. Did not have any issues.

 

So today I began looking for the cause of the drop in upload. As of right now the best I have seen is 30Mbps upload &  I was even getting as low 10-20 Mbps upload. Did some reboots, checked the levels, the usual stuff etc. I am actually getting better results on DSL reports speedtest for bufferbloat with the lower upload speed(got an A for the first time, pasted below)....As you can also see on the Rogers speed check the upload graph is not as "smooth" as it was before...Chatted with Rogers online to see if they have any issues reports for my area & he mentioned that possibly there is. He mentioned it appears something is causing noise or congestion in my area & put in a ticket.

 

Went to test League of Legends right after & first thing I noticed by ping was sitting at 52MS...every game I have played in the past ping was sitting at 38MS. After the match I used Logs of Lag to check results. As you can see below the packet loss has increased & the ping is higher. It was still not enough to notice degradation in game performance as everything ran smooth. Figured I'd share as interesting to analyze these results compared to my previous ones.

 

Will dig into little further into this & report back.

 

 

rogersspeedcheck.jpg

 

logsoflag

I Plan to Stick Around
Posts: 274

Re: CODA-4582 - Open Issues for Investigation

I have the 70u package. And we are seeing massive lag spikes. Like in the 2500 range. Causes twitch streams and youtube videos to buffer. Also affects my work connection. No idea how to fix this. Any ideas people
Rogers Employee 4kgigabitguy
Rogers Employee
Posts: 45

Re: CODA-4582 - Open Issues for Investigation


@Mythen wrote:
I have the 70u package. And we are seeing massive lag spikes. Like in the 2500 range. Causes twitch streams and youtube videos to buffer. Also affects my work connection. No idea how to fix this. Any ideas people

Hey @Mythen

 

Can you provide some info on your setup ? What firmware is your modem running & how are the signal levels ? Also how long have you been experience the issue (just started or it's been like that for a while etc) ? How many devices are you running at home ? Also any troubleshooting steps you may have already taken.

 

This will be helpful in diagnosing the issue. I don't have 70u but I am using the CODA modem with Gigabit service & the family streams alot...they haven't been having buffering issues. 

 

 

I Plan to Stick Around
Posts: 274

Re: CODA-4582 - Open Issues for Investigation

I'll post signal levels when I get home. But they look ok. I have the coda 4582 with the .26t2 firmware. Basically one PC directly connected to modem and another connect using powerline adapters. Not much wifi stuff. 2 pixel XL cellphones. 2 tablets and the 1st generation chrome cast. Not all are going at once. Mostly the two pcs. Issue has been happening last two weeks at least
I Plan to Stick Around
Posts: 29

Re: CODA-4582 - Open Issues for Investigation

So I signed up for 1000/50 in June 2016.   Download speeds have been all over the place, but my uploads were always fairly consistent at around 50.

Lo and behold, as of yesterday I can't get over 30 UP.  Was my profile changed on the system?  WTH!

 

Also, I have noticed that speeds for Gigabit are infuenced by how current a computer and processor I am using.  I just set up an i5 third gen computer and ran the speed test without antivirus installed.  The rogers speedtest resulted in 945/50 prior to yesterdays upload change.  As well the download graph was flat with no spikes or dropouts.

DSL reports yelded similar results.

 

@RogersDaveare you looking at the impact of antivirus software on speeds in your testing?

 

 

I'm a Reliable Contributor
Posts: 578

Re: CODA-4582 - Open Issues for Investigation

@Windwalker To me it looks like it is the case of upload congestion. I've noticed a growing trend that many users are not able to hit 30Mbps/50mbps upload which only means that the upload usage is has increased dramatically within the past  6 months. You can call into Rogers and ask them to check if your node is affected by severe upload congestion/or possible noise on the upload side which can be limiting your speeds.

 

Hopefully D3.1 upload is coming in the next few months to help reduce the upload congestion. 

 

 

I'm a Reliable Contributor
Posts: 578

Re: CODA-4582 - Open Issues for Investigation

@4kgigabitguy It probably could just be noise on the upload spectrum which could be reducing your speeds. This noise can become much more apparent in peak hours as a similar case happened to be a month ago. 

 

I do notice that your packet loss and bufferbloat is still quite low although you are affected by an uplink issue. 

 

What continues to puzzle me is that your upload bufferbloat is consistently low, whereas mine is consistently high. There's currently some work being done in the background to determine the cause of this issue, but I'm not sure how we both yield different upload bufferbloat results despite being on the same modem.