View Full Version : Views on 50 MB
I have now had 50 Meg broadband for a few weeks. Can i just say I am totally underwhelmed with it. I have my laptop running wirelessly from it so i expected a big hit in performance as a result of this but to be honest i find it no better and truth be told probably worse than my 20 meg service. Yes if i run the virgin speed test it will show me getting approx 20 to 24 meg download speeds which are acceptable for wireless, however in day to day use i find it can be even slower.Some web pages, including virgins own speed test site takes a few seconds to open up, Some sites that i could previously stream from with speeds of 8 to 10 meg now consistently download at between 1 and 2 and often have to play catch up. On those occasions when i try p2p sites the speed is usually a fraction of what i had previously. Does anyone know of any settings or tweaks required to speed up general internet use. I am getting fed up trying to convince myself everything is better by looking at a speed test result when i cant help but feel there is no real benefit to having upgraded.
weesteev
03-06-2009, 08:21
Hey Doc, sorry to hear your not over-enthused with the XXL broadband.
When you run ethernet from your modem or router do you get the same problems or is it only wireless that the speed problems occurs?
Are you using both the Netgear USB adapter and router supplied by Virgin?
Have you had the install for more than 2 months now? If so then there is a firmware update for the USB adapter that should help.
Zhadnost
03-06-2009, 08:37
So far it's been great, been getting 46MBit+ since installation (4 weeks ago) and US speed has been solid.
I have however just power cycled the modem for the second time (maybe doesn't like the hot weather).
I will try to move it to somewhere a bit more ventalated later.
Of course I'm not using a wireless router, (straight into server, via Gigabit, which is then switched to the network).
Oddly if I try to use QoS the speed drops, something I really should look into. (clearly not VMs fault).
To be fair to those complaining about 50mb, is that the router isn't great - not Virgin's connection fault, and thus wireless speeds suck; also most people don't know how to utilize the full 50mb, you say you use torrents - what site do you use, they probably won't give you the whole 6.5mb/s. Only certain servers/torrent sites will give you the decent speeds.
Can i assume using 50mb wired will give me the full whack as i only use wireless for my Iphone really.
Zhadnost
03-06-2009, 10:23
I have however just power cycled the modem for the second time (maybe doesn't like the hot weather).
3 times now, (twice today) and the 4th DS is continually erroring (and drops too).
Bugger.
---------- Post added at 10:22 ---------- Previous post was at 10:15 ----------
Getting worse, only got 1 DS now.
---------- Post added at 10:23 ---------- Previous post was at 10:22 ----------
I think I'll turn it off for an hour
Can i assume using 50mb wired will give me the full whack as i only use wireless for my Iphone really.
Maybe, im sure there are some areas that there are problems - but hopefully you'll get 50mb wired, and the iPhone is limited to 10mb wireless anyway.
Hi guys, just registered here to share my views on Virgin 50meg.
I've been a cable customer, previously NTL, for over a decade and always found their internet services extremely reliable. Likewise, when I moved house and got reconnected to Virgin, my 20meg service was also solid and repeated tested on speedtest.net at speeds of around 19.5-19.7meg.
My 50meg story begins a few weeks ago when my 20meg service died and was pretty much unusable for 3 whole days. Despite numerous claims of no known issues in my area, no maintenance taking place etc. my issue was finally escalated to a place where it was explained to me that all my issues were caused by my local exchange being upgraded for the new 50meg services. During this process they had not only configured my port wrongly, but also failed to hook up the monitoring system so the fault went undetected.
Eventually they got a proper engineer on the case, the port was fixed and my normal 20meg service restored. During the discussion, they agreed to upgrade me to 50meg as it was now available in my area. This was finally installed during an engineer visit last Friday (29th May).
I won't go into the numerous cock-ups during the install but eventually is was up and running with the modem correctly configured for 50meg down and 1.5 up.
Upstream is, and always has been, just fine. The modem is configured to a max of 1.6meg and I get that 1.6meg on every single test I perform, any time of day or night.
The downstream, however, is truly random.
The virgin "internal" speed tester reports anything from low 30s to mid 40s. speedtest.net, however, reports significantly less. I've been told about external traffic being varied, peak times blah blah blah but overall, like the OP, my downstream service is generally slower than the 20meg service.
The latency is improved and this helps a little but on downloads I'm just not seeing the throughput I should be getting. Just to test some more, I stayed up late last night and ran a speed test at 2am.
http://www.speedtest.net/result/487265247.png
As you can see, I got just 15meg down - on a 50meg service. So I'm paying more money for a slower service? If it's not even as fast as my 20meg service most of the time, what is the point?
For reference, I work in IT and have work with TCP/IP networks for over a decade. I have a 1000Mbps core in my home and my testing machine is wired to it using an Enterprise grade NIC. This same NIC will easily handle transfers at speeds over and above 200meg on my LAN.
I'm generally using a Dlink DIR-825 router which also has gigabit ports throughout but I've also performed testing with a direct link from cable modem to test machine.
So I have a "50meg" connection which varies from 30-45meg on internal virgin hosts and I can't get to any reasonable speeds for external internet hosts. Virgin tell me they can't guarantee bandwidth to external sites but clearly I'm getting considerably decreased performance when compared to my 20meg service.
Underwhelmed is a great word used by the OP, it's exactly how I feel.
Of course, in parallel, we have the 2-10 project that is upgrading all the base customers from 2 meg to 10 meg. A 5x increase in bandwidth demand from a majority(?) of customers? Co-incidence?
---------- Post added at 15:11 ---------- Previous post was at 15:07 ----------
Can i assume using 50mb wired will give me the full whack as i only use wireless for my Iphone really.
On a 100Mbps LAN you should be able to fully utilise a 50meg link assuming you have good quality network cards and no other significant traffic. It's on the borderline for upgrading connections to gigabit though.
Of course whether you actually get 50meg externally is an entirely different question.
My motherboard is a Gigabyte GA-965P-DS3 (rev. 3.3) running a C2 Duo 6320, it says on there that...
Gigabit LAN connectivity
The Gigabit network interface delivers a high speed LAN connection with data transfer rate up to 1000Mb/s, providing new generation connectivity for the broadband era. Gigabit LAN is ideally for seamless internet connection such as streaming audio and video contents.
The connection will only be used for 2 computers which are wired in the rooms upstairs, i already have a Belkin Wireless G+MIMO router would this be better than the one you get with 50mb ?
My story here:-
http://www.cableforum.co.uk/board/12/33650231-50mbps-problems-due-netgear-wnr2000-wirless.html
First off I thought it was the Netgear router so I took that out of the equation and just plugged my PC directly into the modem.
I have a suspicion that there is rate shaping going on but surely even they wouldn't be crazy enough to rate shape to gamefiles.virginmedia.com!! ;) (I did most of my tests from here as I knew that anything outside their own network would be a no no)
The fact that one download is much faster than the others seems a little fishy to me!
http://joestest.uuhost.uk.uu.net/example21.jpg
I use an Intel PRO/1000 PT PCI-E NIC writing to a RAID0 as you can see there are no bottlenecks there!
http://joestest.uuhost.uk.uu.net/giga1.jpg
this is a local transfer between two machines.
I came from the 20Mbps service which was rock solid and would dowload at 20Mbps from Atraweb/Giganews outside STM, the 50Mbps has been a downgrade for me!
HEADRAT
My motherboard is a Gigabyte GA-965P-DS3 (rev. 3.3) running a C2 Duo 6320, it says on there that...
Gigabit LAN connectivity
Gigabit requires support at both ends. The supplied Netgear WNR2000 router only has 10/100Mbps ports so you can't use it to have a gigabit connection to your cable modem. A direct connection from your motherboard port to the cable modem WOULD be 1000Mbps but then you couldn't share it easily with other machines.
The connection will only be used for 2 computers which are wired in the rooms upstairs, i already have a Belkin Wireless G+MIMO router would this be better than the one you get with 50mb ?
Your G+MIMO router may provide you with a connection speed of a claimed 108Mbps running on 2.4GHz. - e.g. 2 x 54g channels bonded together.
The Netgear WNR2000 router and supplied dongle also run at 2.4GHz but using the draft N 2.0 protocol. This gives increased range and claims very high speeds. In theory it's good, in practice you may not see much improvement over your bonded g channels but it may help avoid wifi conflicts if you have neighbours who also have wifi access points nearby.
The G+MIMO router you have now will require a compatible dongle at the PC end to get the "108Mbps" connection. If you're using a standard wifi adapter, you may only get 54Mbps.
That make sense? I can explain in more detail if required.
---------- Post added at 15:55 ---------- Previous post was at 15:51 ----------
First off I thought it was the Netgear router so I took that out of the equation and just plugged my PC directly into the modem.
My Netgear is still in the sealed box, never been opened.
I have a suspicion that there is rate shaping going on but surely even they wouldn't be crazy enough to rate shape to gamefiles.virginmedia.com!! ;) (I did most of my tests from here as I knew that anything outside their own network would be a no no)
I have been told categorically that there is no traffic management on the 50meg service. I had similar suspicions. It's definitely not got the throughput of 20meg for me.
I use an Intel PRO/1000 PT PCI-E NIC writing to a RAID0 drive so there are no bottlenecks there!
A different NIC (Realtek) is referenced in the speed graphs, how come?
---------- Post added at 15:58 ---------- Previous post was at 15:55 ----------
this is a local transfer between two machines.
Don't use Vista file transfer screens for speed monitoring, they are highly inaccurate.
A different NIC (Realtek) is referenced in the speed graphs, how come?
Just trying to factor things in/out, the results are the same whatever NIC I use ;)
Don't use Vista file transfer screens for speed monitoring, they are highly inaccurate.
Sure, it was just an very simple example to show my system wasn't the bottleneck ;)
Ignitionnet
03-06-2009, 17:05
I am hitting some issues with reliability, it drops a lot more often than the 20Mbit did.
Seeing upstream issues and a lot of variance with speeds and packet loss depending on the weather. It really doesn't like hot weather at all, see a lot of upstream performance issues.
In addition the modem and/or the router appear to not like being placed under load, I see T3 timeouts clock up and eventually they give up the ghost and drop the connection entirely, best case I have to refresh the WAN settings on the router, worst case powercycle the modem.
I did wonder about the numbers mentioned and how Virgin were getting the whole network DOCSIS 3 upgraded for that (relatively) cheap cost, but I'm concerned now that it's because they haven't done a lot of the network work that other operators who have rolled DOCSIS 3 out at much higher cost per home have done. VM have done the bare minimum and plugged it in and hoped for the best. They have not done the required upstream clean up, or have not done it properly given the issues I have experienced.
Overall a rush job, done as cheaply as possibly, with results being issues that I and other customers are seeing. For those who have a local network that was either great to begin with or got a large amount of TLC like Warrington did I'm sure it's wonderful apart from the rubbish upstream. In my case with the different and more demanding upstream modulations
My connection was initially inreliable but it turned out my cable was totally out of the recommended range for signal strength etc. An engineer has since sorted that part out and the link seems to be more reliable, still slow though.
What readings do you have for "Power Level (dBmV)" on your modem?
Ignitionnet
03-06-2009, 17:13
3 times now, (twice today) and the 4th DS is continually erroring (and drops too).
Bugger.
---------- Post added at 10:22 ---------- Previous post was at 10:15 ----------
Getting worse, only got 1 DS now.
---------- Post added at 10:23 ---------- Previous post was at 10:22 ----------
I think I'll turn it off for an hour
Yep I've had some grief like that Zhadnost.
Sun May 31 23:47:22 2009 Sun May 31 23:47:22 2009 Warning (5) MDD message timeout;
MAC Domain Descriptor - the 'map' of where the other downstream channels are, modem didn't get it so was stuck on one channel.
Then there's all the disconnects...
Tue Jun 2 15:49:48 2009 Tue Jun 2 15:49:48 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;
Sun May 31 23:45:44 2009 Sun May 31 23:45:44 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;
Sun May 31 15:46:01 2009 Sun May 31 15:46:01 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;
Sat May 30 22:21:27 2009 Sat May 30 22:21:27 2009 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted
Wed May 27 11:59:01 2009 Wed May 27 18:08:47 2009 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Mon May 25 12:36:52 2009 Mon May 25 12:36:52 2009 Notice (6) TLV-11 - unrecognized OID (Reconnection no logs of d/c)
Mon May 25 10:25:42 2009 Mon May 25 10:25:42 2009 Notice (6) TLV-11 - unrecognized OID (As above)
Not critical but nowhere near as reliable as the 20Mbit. Only thing different really is that the 50Mbit uses a 16QAM upstream which I'm not convinced my area can totally support, which frankly is utterly pap. If they struggle with 3.2MHz wide 16QAM channels how they intend to offer anything above the existing upstreams at any point until bonding becomes live is a mystery, either way it's pathetic given that other operators are happily running 6.4MHz wide 64QAM and 128QAM channels.
I know it's not a good test but here is my latest offering from Speedtest.net
http://joestest.uuhost.uk.uu.net/speedtest.jpg
feels about right, even browsing the web is painful at the moment!
Here are some downloads from gamefiles.virginmedia.com (on-net machine)
http://joestest.uuhost.uk.uu.net/example22.jpg
why is that one download is running along at 1.7Mbps, that just doesn't seem right to me!
Spectacular!! :mad::shocked:
HEADRAT
Anybody else think we should start a new thread with all the speed tests in? The images fill up other threads quite quickly.
The image includes date/time, maybe if we post that and our geographic location and we can keep a log of speeds/times/locations?
Something needs to be done, there is an underlying problem here, virginmedia.support.broadband.cable is full of post about the 50Mbps service!
Obviously not everybody suffers from the these problems but there is a systemic issue here, the helpdesk guys need to be looking for commonality and passing that to 2nd line, 2nd line need to be collating and passing this to Core/Third line.
HEADRAT
50to5wtf
03-06-2009, 17:31
Are you also seeing PL to UBR (first hop on a trace after local router) too?
Ping bbc.co.uk at the same time as poor speed and also post your modem downstream pages.
I was told to ping my gateway address:-
ping -t 86.26.153.1
Pinging 86.26.153.1 with 32 bytes of data:
Reply from 86.26.153.1: bytes=32 time=5ms TTL=255
Reply from 86.26.153.1: bytes=32 time=7ms TTL=255
Reply from 86.26.153.1: bytes=32 time=5ms TTL=255
Reply from 86.26.153.1: bytes=32 time=6ms TTL=255
Reply from 86.26.153.1: bytes=32 time=6ms TTL=255
Reply from 86.26.153.1: bytes=32 time=6ms TTL=255
Reply from 86.26.153.1: bytes=32 time=6ms TTL=255
Request timed out.
Request timed out.
Reply from 86.26.153.1: bytes=32 time=12ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=13ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=9ms TTL=255
Request timed out.
Request timed out.
Reply from 86.26.153.1: bytes=32 time=5ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=7ms TTL=255
Reply from 86.26.153.1: bytes=32 time=9ms TTL=255
Request timed out.
Request timed out.
Reply from 86.26.153.1: bytes=32 time=7ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=13ms TTL=255
Reply from 86.26.153.1: bytes=32 time=12ms TTL=255
Request timed out.
Request timed out.
Reply from 86.26.153.1: bytes=32 time=11ms TTL=255
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 86.26.153.1: bytes=32 time=11ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=8ms TTL=255
Reply from 86.26.153.1: bytes=32 time=8ms TTL=255
Reply from 86.26.153.1: bytes=32 time=9ms TTL=255
Reply from 86.26.153.1: bytes=32 time=5ms TTL=255
Reply from 86.26.153.1: bytes=32 time=12ms TTL=255
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 86.26.153.1: bytes=32 time=9ms TTL=255
Reply from 86.26.153.1: bytes=32 time=11ms TTL=255
Reply from 86.26.153.1: bytes=32 time=11ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=9ms TTL=255
Reply from 86.26.153.1: bytes=32 time=8ms TTL=255
Request timed out.
Request timed out.
Request timed out.
Reply from 86.26.153.1: bytes=32 time=13ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=8ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=11ms TTL=255
Request timed out.
Reply from 86.26.153.1: bytes=32 time=13ms TTL=255
Request timed out.
Ping statistics for 86.26.153.1:
Packets: Sent = 61, Received = 32, Lost = 29 (47% loss),
Approximate round trip times in milli-seconds:
Minimum = 5ms, Maximum = 13ms, Average = 8m
but pinging bbc.co.uk has similar results ;)
Ignitionnet
03-06-2009, 17:36
I should mention that I do not have issues on anywhere near the same level as some do, mine are more of an irritation than a major problem, nonetheless could and should be better.
I have another engineer visit book for Monday to check for "local issues", hopefully he'll find something because the other engineer didn't!
Are you also seeing PL to UBR (first hop on a trace after local router) too?
Ping bbc.co.uk at the same time as poor speed and also post your modem downstream pages.
No packet loss at all here, just generally slow.
---------- Post added at 16:40 ---------- Previous post was at 16:40 ----------
I have another engineer visit book for Monday to check for "local issues", hopefully he'll find something because the other engineer didn't!
As the other guy said, post your modem downstream pages.
Cable Modem Downstream
DS-1DS-2DS-3DS-4
Frequency
299000000 307000000 315000000 N/A
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/YY/Y/YY/Y/YN/N/N
Channel Id 242526N/A
Modulation 256QAM256QAM256QAMN/A
Symbol Rate
(Msym/sec) 6.9526.9526.952N/A
Interleave Depth I=12
J=17I=12
J=17I=12
J=17N/A
Power Level
(dBmV) 2.291.951.57N/A
RxMER
(dB) 37.0937.0937.09N/A
Correctable
Codewords 202N/A
Uncorrectable
Codewords 304 269 259 N/A
50to5wtf
03-06-2009, 17:48
able Modem Downstream Download Failed (1)
DS-1DS-2DS-3DS-4 Frequency 299000000307000000315000000N/A Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/YY/Y/YY/Y/YN/N/N Channel Id 242526N/A Modulation 256QAM256QAM256QAMN/A Symbol Rate
(Msym/sec) 6.9526.9526.952N/A Interleave Depth I=12
J=17I=12
J=17I=12
J=17N/A Power Level
(dBmV) 2.291.951.57N/A RxMER
(dB) 37.0937.0937.09N/A Correctable
Codewords 202N/A Uncorrectable
Codewords 304269259N/A
Hi,
The problems you're having are just about identical to mine. Perfect signal, PL to UBR, and speed drops off a cliff. I think your UBR has already had your card replaced and if i am associating you correctly with the user in the NG, then you've always had QAM256, leading me to believe the issue isn't in the UBR.
When your "engineer" comes, see if you can find out if the amp in cab is a common or uncommon model, perhaps only network engineers will know. The only other info i gathered was the amp in my cab was uncommon as the network engineer had to go hunting for different equipment to tune it, but he said technically there was nothing wrong with it.
Sure, it's actually got much worse today, it's pretty much useless at the moment!
Are you users that have upgraded to 50 meg regretting going from a 20 meg connection that was most probably stable, my 20 meg is rock solid no matter time of day/night (apart from STM) i hit 2.33mb/s.
How do i get access to virginmedia.support.broadband.cable so i can see about these posts and post myself if needed.
Ignitionnet
03-06-2009, 19:01
My 20Mbit was oversubscribed and rarely broke 10Mbit at peak times so I'm fine with the 50Mbit from the speed point of view, it's more that it drops so much more often than the 20Mbit and has wide speed variations upstream for me that is a bit disconcerting.
Zhadnost
03-06-2009, 19:15
Not critical but nowhere near as reliable as the 20Mbit. Only thing different really is that the 50Mbit uses a 16QAM upstream which I'm not convinced my area can totally support, which frankly is utterly pap. If they struggle with 3.2MHz wide 16QAM channels how they intend to offer anything above the existing upstreams at any point until bonding becomes live is a mystery, either way it's pathetic given that other operators are happily running 6.4MHz wide 64QAM and 128QAM channels.
It's been pretty critical here,every half an hour I've been needing to take the interface down and up, DS4 has been continually erroring all day, internet connection has been dropping as well.
Got a tech booked to turn up on Friday and pretend there's nothing wrong. :p:
Just incase it's the modem that's overheating I've built a little cooling plinth for it (not helping afaict although the modems no longer heating up).
Had mine installed today and it started well but has become very unreliable. Spoke to someone in support who was annoying the hell out of me. I'm telling her that I'm getting 7Mbps and she tells that their max is 6.2MBs so there is no problem, I tried to explain to her that I'm getting 7 Mega BITs not bytes which totally went over her head. So eventually changed the format on DU Meter so I could find out what the MBs I was getting. Eventually got her to look into it further and told me I'm getting packet loss and an engineer would be out on Tuesday to have a look.
Really weird how my connection is playing up. Sometimes I'm getting the max and then it is barely even 1MB speeds. I'm finding newsgroup downloading appalling at the moment whereas from rapidshare or websites it is a lot more stable. Well it starts out at 50MB for a minute or so and then drops down and then sometimes after a while picks up again. On newsgroups I'm getting real poor speeds. Really weird thing is when I started it up I was maxing my connection but within 2 or 3 minutes it started to get flaky and things have remained like that.
I've attached below a DU Meter screen shot. The stuff on the left is when I was doing things from newsgroups (via astraweb), that little download in the middle I did quickly from microsoft.com and on the right is Rapidshare
Ignitionnet
05-06-2009, 09:01
It's been pretty critical here,every half an hour I've been needing to take the interface down and up, DS4 has been continually erroring all day, internet connection has been dropping as well.
Got a tech booked to turn up on Friday and pretend there's nothing wrong. :p:
Just incase it's the modem that's overheating I've built a little cooling plinth for it (not helping afaict although the modems no longer heating up).
Has this been getting any better for you?
FWIW the 50M modems do work a bit differently downstream to the 20s, they have a single tuner and suck up about 100MHz of channels and digitally sample to get the 4 QAM streams so slightly more vulnerable to downstream impediments.
Zhadnost
05-06-2009, 11:50
It's been quite a bit better. Still buggered though.
That sounds like a very labour intensive (though cheaper) approach. Very odd.
Tried again last night and the rapidshare stuff did become more stable but couldn't for the life of me get above 15mb on newsgroups, I dunno if it was just playing up on the night but I've never had 20mb many problems with my connection on newsgroups.
So seems more stable on web page related downloads but not so stable on newsgroups. Loads of my files were coming up as incomplete as well on newsgroups which is weird as I downloaded the same thing a few days ago and it worked fine but yesterday I was getting many files not finishing to download as some parts were missing.
Anyone else on 50MB use Astraweb as their newsgroup provider?
I have used usenet for over a decade but I certainly agree that downloading on 50meg isn't as quick or reliable as downloading on 20meg.
50to5wtf
05-06-2009, 13:29
What my 50mb service looks like as of today, 65 days after install, and as it has been every day since.
http://nemon.myby.co.uk/05-06-2009%2013-19-15.png
As you can see, i get a whole NINTY-SECONDS! of 50mb before PL goes through the roof and speed through the floor.
I'll point out every piece of equipment, drop, modem, attenuator, splitter has been replaced and the problem has been shown on VMs own laptop test equipment and yet we still don't have anyone fixing it, nor do i have anyones name who is going to own the problem until it's resolved.
I've had approximately 30mins uptime since 08.15 today. It's now 13.30.
Not what I'd call reliable either.
Ignitionnet
05-06-2009, 14:16
It's been quite a bit better. Still buggered though.
That sounds like a very labour intensive (though cheaper) approach. Very odd.
They have to suck up that range as it's DOCSIS standard and to do it the other way would need 4 tuners and there would be no scalability to 8 downstream operation.
All modems with that chipset should in theory perform similarly though I do wonder browsing other forums from ISPs using Cisco and Motorola modems.
Zhadnost
05-06-2009, 15:33
Well it looks like it's sorted (as of about now the errors aren't going up at a terrific rate anymore).
Still the counters (which obviously reset everytime everything gets dropped. look odd.
Correctable Codewords 254 31 48 13092625
Uncorrectable Codewords 303 296 273 2102826
http://nemon.myby.co.uk/05-06-2009%2013-19-15.png
What software are you using to produce that?
50to5wtf
05-06-2009, 17:50
DUMeter for speed, PingPlotter for latency and packet loss.
I finally got round to testing my connection a bit more. Using wireless connection definitely not impressed. I have tried my laptops inbuilt type g wireles card, i have tried the supplied USB dongle and i also purchased the WN511b laptop card. All have latest drivers and despite the virgin speed test showing approx 20 to 23 meg download i feel that normal browsing and downloading sucks. Torrents and streaming sites very poor and probably worse than my 20 meg service delivered. I tried my wired pc this morning and the virgin speed test showed 30 meg download speed but again torrents and streaming poor. Using utorrent just now to download a highly seeded tv show and DU meter averaging about 2 Mbps. I would usually get about 10 Mbps with my old g type system and 20 meg service from virgin.
Here are my power levels for modem.
Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 299000000 307000000 315000000 N/A
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y N/N/N
Channel Id 54 55 56 N/A
Modulation 256QAM 256QAM 256QAM N/A
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 N/A
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 N/A
Power Level
(dBmV) 2.07 1.41 1.02 N/A
RxMER
(dB) 36.39 36.84 37.09 N/A
Correctable
Codewords 99472 116549 131467 N/A
Uncorrectable
Codewords 285 273 255 N/A
Upstream US-1 US-2 US-3 US-4
Channel Type 1.0 N/A N/A N/A
Channel ID 4 N/A N/A N/A
Frequency
(Hz) 25808000 N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation 16QAM N/A N/A N/A
Symbol Rate
(KSym/sec) 2560 N/A N/A N/A
Mini-Slot Size 2 N/A N/A N/A
Power Level
(dBmV) 36.00 N/A N/A N/A
T1 Timeouts 0
T2 Timeouts 0 0 0 0
T3 Timeouts 2 0 0 0
T4 Timeouts 0 0 0 0
Any experts out there able to throw any light on this before i attempt phoning customer support.
Thanks for any help offered.
50to5wtf
06-06-2009, 15:29
I've given in, 66 days of BS and nothing but a joke, being double charged £320 is really the last straw. I've dropped back to 20mb and i'll be looking for another provider.
---------- Post added at 15:29 ---------- Previous post was at 14:33 ----------
The fault is still present on 20mb, it's just i get a peak of 20mb before PL and speeds drop. Can i swear on this forum? Well if i could i would.
http://nemon.myby.co.uk/06-06-2009%2015-04-51.png
love2learn
06-06-2009, 23:45
I'm glad I read this thread now. I was about to take the plunge and order 50Mbit.. the only thing before reading this thread that was putting my off was the pathetic 1.5mb upload speed, I'd be looking for 5Mbit minimum upload. But now that I read this I'm staying on 20Mbit.
Here is my latest gripe on this service. Still having slower download speeds on everything than i did with 20 meg service, browsing, streaming and torrents. I have DU meter running and what i notice it is that when downloading from a healthy torrent my speed yoyos, it will show 3 Mbps then decrease to 0 then climb back up then down again. it does not hold a regular speed for any length of time. Reading the figures from DU meter it s just constantly climbing then immediately dropping. Any ideas on cause of this. I am using laptop wirelessly.
The 50meg service is far from what you might call "full duplex". It can provide 50meg download, but not whilst providing upload. It can provide 1.5meg upload, but not whilst providing download services. The speed tester services test them independently intentionally.
TCP download traffic arrives in the form of packets. For each one that is received, a corresponding acknowledgement (ACK) is sent upstream to confirm it was received. On a heavily loaded network, the bandwidth require for these ACKs is substantial.
As a result of this, when downloading at 50meg you will pretty much full utilise all of your upstream bandwidth with the ACKs. Consequently, when uploading at say half of your bandwidth, your download speeds are going to be halved.
Torrent traffic is quite unique in that is swallow upload bandwidth as well as down. Depending on the settings and capabilities of your client, the results may vary considerably. The router hardware in use is critical too as it needs to handle millions of packets in both directions at the same time - quite a traffic jam if not carefully managed.
This doesn't entirely explain Virgin YoYo, your bandwidth should be constant, but may go some way to explaining why sometimes your download isn't fully utilised - busy seeding perhaps?
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