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Re: Think Broadband Ping Monitor Results (POST YOURS)
I notice that I get high latency spikes when I upload or seed.
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Re: Think Broadband Ping Monitor Results (POST YOURS)
That makes sense.
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this is from yesterday, http://www.thinkbroadband.com/ping/s...23-11-2014.png can you explain it for dummies like me that don't this language please? I restarted my hub yesterday to drop it which it did though my seeding didn't go back to high levels again that it was doing at the time. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
In simple language, when you are busy downloading, seeding or whatever of that type, this traffic takes priority over pings to/from your system. SO the ping latency must rise.
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is this usual the case? I never see the blue go that high. |
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1/ The stuff your system is doing is not exactly the same in load terms as on previous occasions - for example running upstreams and downstreams together. 2/ There is additional utilisation elsewhere on your node. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Blue that high is completely normal thanks to VM's bufferbloat.
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---------- Post added at 18:56 ---------- Previous post was at 17:50 ---------- 2 outages and and reboot today, dont know why [img]Download Failed (1)[/img] |
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[img]Download Failed (1)[/img] |
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Well my SHac has died support said it was a Locked up Modem. Now back on SH2
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Re: Think Broadband Ping Monitor Results (POST YOURS)
My Broadband Ping
---------- Post added at 21:42 ---------- Previous post was at 21:41 ---------- <a title="Broadband Ping" href="http://www.thinkbroadband.com/ping/share/d5a5091919b70bb33fca53a79a869fe8-25-11-2014.html"><img alt="My Broadband Ping - vm 100" src="http://www.thinkbroadband.com/ping/share-large/d5a5091919b70bb33fca53a79a869fe8-25-11-2014.png" /></a> |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Last nights
http://www.thinkbroadband.com/ping/s...24-11-2014.png Tonights http://www.thinkbroadband.com/ping/s...25-11-2014.png Anyway of getting better results than this graph you reckon? |
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Beware though, these dates come and go and can take 12 months or longer to fix, however the beauty of this is you can ask for a reduction off your monthly bill until it's fixed or simply leave with no penalty once you've spoke to a decent customer service person that is. My advice is, if your a gamer and need low jitter then look elsewhere, if your a habitual downloader, stay put and ask for a discount. |
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Not much of a downloader myself but I am a gamer. You reckon there would be a noticeable difference changing providers? Heres tonights graph [img]Download Failed (1)[/img] |
Re: Think Broadband Ping Monitor Results (POST YOURS)
We have both VM cable and BT Infinity.
My son's a gamer (CoD) and his PC is usually on BT Infinity - except that he often asks to switch when poor latency shows up on Infinity. He generally gets better latency on our VM circuit. It all does need thinking through. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
You'll probably see an improvement.
http://www.thinkbroadband.com/ping/s...27-11-2014.png By its very nature cable is more prone to latency issues than properly configured xDSL. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Indeed, the underlying tech is more prone to it but it's all in the implementation. Depending on area, line quality, and the so forth, even on a high jitter VM line you could end up with lower average latency than even the minimum latency on a colocated FTTC connection if you're unlucky enough to get a crappy routing path and forced interleaving on your line that you cannot turn off.
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You pays ya money, you takes ya chance :) |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Some driving games might be extra sensitive, as they lack lag compensation. MMOs I find to be the least lag or jitter sensitive IMO, especially as they tend to have 500ms+ server lag built-in anyway.
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This was on the Service Status page today Fault Ref: M02196793 The latest update is: Our engineer is on site and they're working to fix the problem We now expect to have this resolved by 27 November 2014 21:00 The Virgin Media Team https://www.cableforum.co.uk/images/local/2014/11/9.png |
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Re: Think Broadband Ping Monitor Results (POST YOURS)
Yeah - but whatever is afflicting Martin isn't the same fault affecting Blair. At least not judging by the evidence here.
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Edit: Not here, weird: http://www.thinkbroadband.com/ping/s...28-11-2014.png |
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Re: Think Broadband Ping Monitor Results (POST YOURS)
VM's core network seems to be in a bit of a state of flux over the past weeks.
Wonder if new hardware or a new JunOS release have caused some problems? ---------- Post added at 09:04 ---------- Previous post was at 08:59 ---------- Quote:
Unless you guys are within a couple of streets of each other you aren't sharing the same things throughout, and your issue seems pretty local. |
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---------- Post added at 16:18 ---------- Previous post was at 16:18 ---------- Quote:
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Then again I thought VM mainly ran on Sh*tsco gear? |
Re: Think Broadband Ping Monitor Results (POST YOURS)
how do I find out what server am on?
just had another outage a few minutes ago, I've made a thread on the VM forum about this and I can't be bothered phoning up India just to get the run around. it might not be a big problem giving the gap between issues its just becoming a complete pain. http://www.thinkbroadband.com/ping/s...28-11-2014.png |
Re: Think Broadband Ping Monitor Results (POST YOURS)
You're not 'on' a 'server'
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Re: Think Broadband Ping Monitor Results (POST YOURS)
Hit the connection link towards the top centre of this web page the copy/past the HOST data you see in the pop-up
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Re: Think Broadband Ping Monitor Results (POST YOURS)
http://www.thinkbroadband.com/ping/s...27-11-2014.png
Ugh. Looks like I've been put on the naughty step. |
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Re: Think Broadband Ping Monitor Results (POST YOURS)
Oops, something went belly up overnight, only just come back on:
http://www.thinkbroadband.com/ping/s...30-11-2014.png |
Re: Think Broadband Ping Monitor Results (POST YOURS)
no outages yesterday but had another one today
[img]Download Failed (1)[/img] ---------- Post added at 19:59 ---------- Previous post was at 18:41 ---------- as you will see another one, [img]Download Failed (1)[/img] ---------- Post added at 21:53 ---------- Previous post was at 19:59 ---------- does anyone have any suggestions as to what the hell this could be? no issues yesterday and now I have 3 in the space of 2 and a bit hours. I can't get anyone at customer services. ---------- Post added at 22:01 ---------- Previous post was at 21:53 ---------- Downstream Channels Lock Status Channel ID Frequency Modulation Rx Power SNR Pre RS Errors Post RS Errors Locked 53 299000000 Hz QAM256 4.4 dBmV 39.3 dB 250 0 Locked 49 267000000 Hz QAM256 3.6 dBmV 39.0 dB 205 0 Locked 50 275000000 Hz QAM256 4.2 dBmV 37.9 dB 1777 0 Locked 51 283000000 Hz QAM256 3.6 dBmV 39.0 dB 199 0 Locked 52 291000000 Hz QAM256 3.6 dBmV 39.0 dB 200 0 Locked 54 307000000 Hz QAM256 4.6 dBmV 39.0 dB 182 0 Locked 55 315000000 Hz QAM256 4.5 dBmV 39.0 dB 163 0 Locked 56 323000000 Hz QAM256 4.5 dBmV 39.4 dB 209 0 Upstream Channels Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate Locked 5 31000000 Hz ATDMA 52.3 dBmV 16QAM 6400000 20480 Kbits/sec Locked 4 37600000 Hz ATDMA 51.5 dBmV 16QAM 6400000 20480 Kbits/sec Unlocked 0 0 Hz Unknown 0.0 dBmV Unknown Unknown 0 Kbits/sec Unlocked 0 0 Hz Unknown 0.0 dBmV Unknown Unknown 0 Kbits/sec |
Re: Think Broadband Ping Monitor Results (POST YOURS)
One thought that comes to mind is that you're running torrents with hundreds of peers connected and overwhelming your Superhub.
The ping times suggest you're constantly seeding. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Looks like intermittent noise on the upstream. This is deduced now that you have posted the modem stats. An upstream problem can be confirmed if your upstream power is not stable and reaches 54 dBmv.
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I mean these outages are happening when am not seeding, like when the computer is switched off |
Re: Think Broadband Ping Monitor Results (POST YOURS)
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If he posts on the VM forum the team there will be able to say what's happening. Of course there are the other possibilities of SH failing (I doubt that) or a problem in the common part of the network in which case neighbours would see the same. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
this is a joke, that is the 4th outage now since 6pm.
I can't understand how my seeding has anything to do with this...I do a lot of seeding around the weekends and have done for years and NEVER have I had this amount of outages in one day, never mind just this week, in fact it never happened period. A fella I spoke to on the Paisley connection (I assume that will be via Uddingston) said he's had a similar problem over the last 2 weeks. I've just spent another 30 minutes on to the phone trying to get through to VM with no joy, hopefully I get a response to the thread I made on the VM forum + I've sent a complaint. http://www.thinkbroadband.com/ping/s...30-11-2014.png |
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To perceive noise as a cause from modem stats you'd need to see high upstream transmit power at the time of the issue. Needs a tech either way. The upstream transmit is a little high and out of kilter with the forward path. EDIT: T3 count would be useful. |
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Was seeding yesterday and had no outage then 4 quite quick today |
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Incidentally for Blair, the T3 count is best obtained IMO by using the stats from the ROUTER STATUS link at the top right of the GUI screen rather than logging into the GUI. |
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---------- Post added at 07:27 ---------- Previous post was at 07:12 ---------- T3 Count via Router Status: US-1 US-2 US-3 US-4 Channel Type 2.0 2.0 N/A N/A Channel ID 4 5 N/A N/A Frequency (Hz) 37600000 Hz 31000000 Hz N/A N/A Ranging Status Success Success N/A N/A Modulation QAM16 QAM16 N/A N/A Symbol Rate (Sym/sec) 5120000 5120000 N/A N/A Mini-Slot Size 128 128 N/A N/A Power Level (dBmV) 51.3 dBmV 52.5 dBmV N/A N/A T1 Timeouts 0 0 N/A N/A T2 Timeouts 0 0 N/A N/A T3 Timeouts 0 0 N/A N/A T4 Timeouts 0 0 N/A N/A Upstream Burst Req (1) Init Maint (3) Per Maint (4) Adv Short (9) Adv Long (10) Adv UGS (11) Modulation Type 16QAM 16QAM 16QAM 16QAM 16QAM 16QAM Differential Encoding Off Off Off Off Off Off Preamble Length 36 384 384 64 64 64 Preamble Value Offset 396 6 6 396 396 396 FEC Error Correction (T) 0 5 5 6 8 8 FEC Codeword Information Bytes (K) 16 34 34 76 231 236 Maximum Burst Size 0 0 0 4 0 26 Guard Time Size 22 48 48 22 22 22 Last Codeword Length Fixed Fixed Fixed Short Short Short Scrambler On/Off On On On On On On Network Log First Time Last Time Priority Error Number Description 30/10/2014 22:28:32 30/10/2014 22:28:32 Critical (3) 82000400 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=4c:60:de:1c:c1:60;CMTS-MAC=00:21:d8:d1:8c:43;CM-QOS=1.1;CM-VER=3.0; T3 Status from Logging into the GUI: Modem Initialisation Stage Status Downstream Acquisition Locked Primary Frequency 299000000 Hz DHCP Complete TFTP Complete Time Of Day 07:25:53 Security Enabled Counters T1,T2,T3,T4,Sync,Resets 0, 0, 0, 0, 0, 0 |
Re: Think Broadband Ping Monitor Results (POST YOURS)
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While power is ramping up TBB monitor will show loss as the data (ping response to TBB) fails to get through to the CMTS along with the station maintenance. ---------- Post added at 08:00 ---------- Previous post was at 07:57 ---------- Quote:
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I posted up the forum on Friday morning I think. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Blair
I've suspected upstream because of the high power level. Igni has correctly pointed out that upstream power ramping can occur because the downstream is playing up and the modem can't respond to maintenance requests it doesn't understand. Igni has also said (more or less) that there isn't enough evidence of packet loss in the TBB graph to signify an upstream problem. On balance, he's prolly right! He does point out that T4 events due to the downstream are rare-ish. Anyway, it takes three or four days for the VM bods to reply over there but they'll tell you what's going on. |
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will VM forum be able to deduce what the problem is by simply checking from their end? I haven't posted these stats on to my original forum post and I don't want to go back and post them because I think that 3 day wait then starts over again. do you suspect this has happened off the back of the 152MB upgrade? Sorry for the questions, I've been following you two's conversation and I must admit, it would probably be better off written in Chinese for that is how much I understand of it :D |
Re: Think Broadband Ping Monitor Results (POST YOURS)
The 3 day wait shouldn't start again. They do like as much info as possible so that they can compare what they see now with what you saw then.
As to the exchange between Igni and myself, he usually has the trumps. That's Chinese for a bigger wi....... |
Re: Think Broadband Ping Monitor Results (POST YOURS)
what is the best way to post those stats on the VM forum?
I remember someone saying to it was best to post it in a certain format |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Just copy & paste. Sometimes the format isn't brilliant, but it's better than having to go to external links for pictures - a real pain!
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Re: Think Broadband Ping Monitor Results (POST YOURS)
I posted on VM forums and got this reply from John
"Your power levels and modem stats are fine. Looking at your connection I can see your upstream utilisation is getting high at peak times. This would explain the ping spikes though it is not very severe and quite short lived so we're unable to raise this to networks." Here is last nights graph .... :-( [img]Download Failed (1)[/img] And the night before [img]Download Failed (1)[/img] |
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so they aren't going to help you? |
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Re: Think Broadband Ping Monitor Results (POST YOURS)
just thought I'd let everyone know that VM finally responded, not to my thread on the forum, it was a post on someone else's thread:
apart from the very occasional peak time spike this doesn't look to be related to high utilisation, but more an issue with high upstream power levels reported by your SuperHub. Got an engineer popping on Friday morning I think, I assume that should sort it, but I've read others saying that not all the engineers visits solves these issues. |
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Re: Think Broadband Ping Monitor Results (POST YOURS)
I'll ring them up then, see how many hours I'm on the phone for, or how many times I have to switch the router off and on... :-(
Thanks for replies guys |
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maybe chance your arm and make a comment on this thread http://community.virginmedia.com/t5/...e/td-p/2523679 I did that yesterday just to add to the conversation and had a staff member PM me today to arrange an engineer visit. |
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Re: Think Broadband Ping Monitor Results (POST YOURS)
Hope the new build in LS16 is as good as that.
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Re: Think Broadband Ping Monitor Results (POST YOURS)
had another outage tonight.
http://www.thinkbroadband.com/ping/s...02-12-2014.png got a response from a couple of lads who I showed my readings to. Quote:
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[img]Download Failed (1)[/img] However I've been hit with outage problems for close to 2 weeks now, an engineer is meant to coming round tomorrow as apparently my upstream levels are too high Upstream US-1 US-2 US-3 US-4 Channel Type 2.0 2.0 N/A N/A Channel ID 4 5 N/A N/A Frequency (Hz) 37600000 Hz 31000000 Hz N/A N/A Ranging Status Success Success N/A N/A Modulation QAM16 QAM16 N/A N/A Symbol Rate (Sym/sec) 5120000 5120000 N/A N/A Mini-Slot Size 128 128 N/A N/A Power Level (dBmV) 50.8 dBmV 51.0 dBmV N/A N/A T1 Timeouts 0 0 N/A N/A T2 Timeouts 0 0 N/A N/A T3 Timeouts 0 0 N/A N/A T4 Timeouts 0 0 N/A N/A |
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https://www.cableforum.co.uk/images/...2014/12/16.png https://www.cableforum.co.uk/images/...2014/12/17.png |
Re: Think Broadband Ping Monitor Results (POST YOURS)
Same midnight TBB glitches in RG41 (which weren't reboots) but then a real outage at dawn.
http://www.thinkbroadband.com/ping/s...04-12-2014.png It goes to show that not much can be deduced from TBB glitches that are seen across the country, IMO. |
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I use Skype quite alot of work purposes and I'm getting annoyed at the amount of times I get these outages during the times that I use it, really denting the confidence. |
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And I include myself in that. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
An outage shows in the modem network log. Sometimes there is a corresponding red line in the TBB graph. Corroboration is necessary, IMO otherwise people are wasting their time trying to help.
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I have to constantly enter my pass word in to re-connect my Sky box to wifi. Normally my connection has been rocked solid, however the last two weeks has seen a daily disconnect from the internet for about a 2 minute period. I had 4 disconnect in 3hours last Sunday whilst I was on Skype, bloody annoying when you are trying to get work done. I'm posting stuff up to allow others that may be suffering the same problems or for others to make a suggestion. |
Re: Think Broadband Ping Monitor Results (POST YOURS)
That's fine, Blair except that the stuff being posted is incomplete without the modem stats. That said, it's clear that you need VM input. Did you provide a link to your thread in the VM forum?
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