Peteff
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| posted on 27/5/05 at 09:45 PM |
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BTInternet
Anyone having problems? We're not but a friend of my wife who is online chatting is having speed problems. Her speed checked on speedguide is
varying between 78 and 188kbps on a supposed 2meg connection.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Lawnmower
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| posted on 27/5/05 at 09:48 PM |
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nope, 576kbps
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mookaloid
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| posted on 27/5/05 at 09:48 PM |
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I'm having similar problems. I'm not with BT but I believe my ISP uses BT as their supplier.
Just done a couple of speed tests at 45 and 182 Kb/s
Crap isn't it?
Mark
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mookaloid
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| posted on 27/5/05 at 09:49 PM |
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and mine is supposed to be 2 megs
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flak monkey
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| posted on 27/5/05 at 09:54 PM |
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Are your results in bits or bytes?
Remember that internet connections are quoted in kilobits! So divide by 8 to get it in kilobytes.
Im getting just over 600kbits/sec on my 1Megabit connection...!
David
Sera
http://www.motosera.com
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mookaloid
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| posted on 27/5/05 at 10:08 PM |
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quote:
Originally posted by mookaloid
I'm having similar problems. I'm not with BT but I believe my ISP uses BT as their supplier.
Just done a couple of speed tests at 45 and 182 Kb/s
Crap isn't it?
Mark
definitely Bits
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Peteff
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| posted on 27/5/05 at 10:13 PM |
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I'm on a 1/2meg and speed is 482kbps on the same test so she's definitely losing out somewhere.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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mookaloid
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| posted on 27/5/05 at 10:25 PM |
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I am complaining to my ISP about it
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donut
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| posted on 27/5/05 at 11:58 PM |
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Alot of this depends how far away from the exchange you are.........apparently!
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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wilkingj
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| posted on 28/5/05 at 05:41 AM |
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There are several factors.
1. The MAX line speed is goverened by the fact its ADSL. I have seen a 32Mb ADSL line working!!. However most residential lines are now only 2Mb.
2. Whilst your MAX Speed is 2Mb, your actual speed is goverened by the Traffic about at the time.
3. You Share the segment with several other customers, ie for example (I'll stick to odd numbers to make the maths easy)you will have a 2Mb
segment distributed between 50 customers. All of them have a 2Mb line. The contention Ratio is then 50:1
So if you are ALL ON LINE and ALL hammering the line, the speed drops (on an AVERAGE).
The actual numbers are higher, and its probably more like a 100Mb line into an exchange, shared by 5000 customers giving a contention ratio of 100:1
(50x2mb shared by 5000 customers)
PLEASE NOTE MY NUMBERS ARE NOT FACT, JUST EXAMPLES TO EXPLAIN THE MATHS.
So at the bottom line, whilst you have a Max speed of 2Mb, on your individual Lines, you may never get the whole 2Mb speed ALL the time.
This is why it slows during peak periods ie early evenings.
Just think of it as road traffic and Rush Hours!.
If you each had a proper dedicated 2Mb link, it would cost a small fortune!!
Believe me, we Host LARGE companies servers, and many of them only have a few Mb links, many not more than 5 - 10Mb. To sustain 10Mb of continuous
traffic (24x7) requires a LOT of data!
When I mean large, I mean platforms with anything up to 70+ servers in a single platform. and that IS big!
Its now 05:50, and my 2Mb line is zipping alone. Last night its was much slower.
What do you expect for the money!.
This is also the reason why you have download limit caps on lines. Mines 30Gb per month. I never get anywhere near it. I have 2 sons doing GCSE and A
levels, and a wife looking for a job. We each have our own computers networked, and do use the net a lot.
This is to give the average customer a faster service, but without cloggingthe entire network with massive amounts of traffic (eg people downloading
videos and music 24x7)
ie when you use the net, its quick, and as long as everyone is not hammering it you get a quicker service on average.
The above is roughly how its supposed to work. In reality, everyone is is bed at 6:00AM and on the the Net at 6:00PM.
I have BT Internet, and on average its a reasonable to good service. Its certainly been reliable. Biggest let down is the helpdesk, but then I dont
need them 99% of the time.
Ive just looked at my traffic graphs, and my average traffic is about 150Kb at the worst. However, thats stats, and the average, so I must be getting
faster than 150K to average it!.
Just remenber you are all sharing a bigger pipe with lots of other users, so you wont get 2Mb ALL the time, EVERY day.
If you actually took traffic measurements, you will find its much lower than you think!.. I run Smoothwall and my ADSL is connected and online 24x7
Which is not the way BT wants me to do it! As I often need to nip home on the net, to get things from my server, (software, and Viento Piccies!).
I dont generate much traffic for 90% of the day, but its useful.
Hope that gives an insight into how some of it works and what you get for your 2Mb line. Oh its 2Mega BIT not BYTE. ALL Data is measures in BITS.
Divide by 8 to get the BYTEs.
So went you down load a 2Mb prog, on a 2Mb line running 2Mb/s it will take 8 seconds, plus a bit more for the packet overheads - more likely 10secs
(In a perfect world!!)
Remember that each packet of Data has an overhead, ie the header and footer to EACH packet, plus the data in it. NO-ONE takes that into consideration
when calculating dowload times! and the actual data carried can be probably only 1KB of real data, and 10% overheads or more.
Have a read up on the 7 layer stack and TCP & IP. Then you will understand.
Sorry for the long post!!
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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flak monkey
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| posted on 28/5/05 at 07:51 AM |
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My net is very slow this morning, and usually is on a Saturday. But it will pick up speed soon as people drop off line.
Just to rub it in a bit.
I went to campus the other day and downloaded a video. Got the very tasty speed of 8Mb/sec  
Sera
http://www.motosera.com
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britishtrident
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| posted on 28/5/05 at 09:34 AM |
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In my experience BT Intermess/BT Yahpunk rarely own up to problems and outages, as a dial up ISP I found them OK but the ADSL service would slow
down or disapear without explanation for 24 hours. Since I migrated to Zen 2 years ago I haven't had a single outage.
If the computer is running Xp (particularly if service pack 2 is installed) it is also possible the Winsock LSP stack is a damaged on the computer
-- this is very easy to fix download a program called "Winsock Xp Fix" from http://www.spychecker.com/program/winsockxpfix.html
However with a dramatic slow down the next thing to do is a virus sweep to check is that the PC isn't harbouring a trojan that has turned into a
zombie emailer or open relay. Not only will this hog the connection the ammount of traffic it causes can lead to your isp putting the brakes on your
connection speed by making your connection share its 50 to 1 contention with other "bad boys".
After a virus sweep the next thing to check is the MTU setting in registry there is a tool called "Cable nut" to do this -- I think BT
have on thier web site or you should be able to pick it up from the adslguide.org.uk or shareware/freeware sites such as "nonags" or
"snapfiles"
[Edited on 28/5/05 by britishtrident]
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Peteff
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| posted on 28/5/05 at 10:20 AM |
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Cheers she'll be on again tonight so if she's still struggling we'll get her to try the winsock fix. She tried a pandasoft and a
trend scan and they both came up clear.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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