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Discussion Starter · #1 ·
Logging into my Netgear DG834GT under the Modem information section I see the following connection speeds:

Downstream - 7616 kbps
Upstream - 448 kbps

What speed would these suggest my connection is?
Is this bits or bytes? I know theres 8 bits in a byte etc
Im with Zen Internet on an 'up to 8MB' connection.

Would these figures be reliable? I've used many speed checkers but see varying results.
 

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8mb is a maximum figure, you will never actually gain that, but you are doing quite well.

7616 Kilo Bytes Per Second = 7.6mb/sec

7.6mb/sec download speed (top speed that is, all depends on the connection you are downloading from remember) and 448kb/sec upload speed, which again is quite good really.

The best speeds I ever see is when I'm downloading my AV updates, they fly down!

I'd be very pleased with the results your getting. My guess is that you live quite close to the exchange.
 

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Discussion Starter · #3 ·
Cheers Graham, I wish I had of taken notice of those figures before migrating from Force9 just to compare. Or would they have been the same since they both use BT lines?
 

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If force9 was giving you a 8mb/sec service, then they would have differed slightly but not by much. They differ because your on a different service, do depends on the service really as to what you get.

With both, it's well worth doing a test say really early in the morning (say 7am) and then another test at 7or 8pm in the evening.

Your speeds in the morning should be faster than the speeds in the evening. If they are the same, then your getting a very good service.

Basically there should be more users using the Zen service around that time in the evening than there are in the morning. It's why i stick with AOL. I'm on a slow (these days) 1mb connection but I get a constant speed and can use peer to peer services as much as I like and have no download cap.

Plus 1mb is all I can get in my stinking tourist trap area anyway!

Basically there will be a difference on all services. It's like comparing a 6 speed 1.8T at 180bhp Golf, with a 6 speed, 1.8T 180bhp leon. Same engine, but different package. Going to differ slightly in max output.
 

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Your sync. rate is the line transmission frequency, that doesn't tell you anything about how many packets contain useful data. Imagine two identical trains travelling at 100mph, one contains 200 passengers but the other contains 150. 100mph is your sync. rate, 200 and 150 are your throughput figures.
 

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Discussion Starter · #9 ·
Now im confused again!!

Stewart, using your link I got:


920.10 Kbps


which is around 115.01 KB/s
including overheads

Considering im on an 'up to 8mb' connection would this be very poor?
With Force9 I used to download at speeds over 400 KB/s
 

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This confuses me too!

I have just been upgraded to an 'up to 8mb' service.

With connection speed of 7.1Mpbs (according to the tele's in the system tray)

Sync speed (if this is what is shown when I hover over the two arrows in system tray) is 7136 kbps

When I run the above speed test I get 4.96 Mbps
which is around 635.08 KB/s
including overheads

Is this right too as I was expecting to get results from the speed test of close to 7.1Mbps?
 

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Right, this is kinda what I was trying to say above, but didnt know it was 'sync' speed. When I said you won't always download at that. So my apologies.

Gary, yours is very poor, I'm getting 83kb/s on my 1mb line.

Garfie, yours seems about right.
 

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Discussion Starter · #12 ·
I've just spoken to technical support at Zen Internet to question my apparant slow download speeds.
They say it takes up to 10 days after migration for speeds to stabilize and considering its been 8 days since my migration from Force9 I need to wait a couple more days or so. He expects speeds to improve in this time.
If they haven't by next weekend then I'll contact them again and they will do some diagnostics.
 

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I upgraded mine to up to 8meg and have never really thought it was much different from my 2meg speed.

I did the test from above and got a result of 4.08 Mbps
which is around 522.24 KB/s
including overheads

Can anyone say if this is a good result?
 

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Here is another test site which gives a bit more explanation:

http://www.adslguide.org.uk/tools/speedtest.asp

The 8 Mbps service is an absolute maximum under ideal conditions. The actual speed you get will depend on how far you are from your local exchange becaue of signal loss in long cables, so some people will not get anything like 8 Mbps. It will also depend on the time of day - i.e. how many other customers are using their connection at the same time.
 

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I've just spoken to technical support at Zen Internet to question my apparant slow download speeds.
They say it takes up to 10 days after migration for speeds to stabilize and considering its been 8 days since my migration from Force9 I need to wait a couple more days or so. He expects speeds to improve in this time.
If they haven't by next weekend then I'll contact them again and they will do some diagnostics.
Gary,

From experience I'd be very suprised if your speed changes very much from this after your 'settling down' period. Mine didn't. I would give it a bit longer than 10 days though, maybe 14.

As has already been pointed out try tests at different times and try www.adslguide.org.uk UK based so a little more accurate. Another good one but not UK based is www.testmy.net

If it's any help I went over to Virgin's up to 8 meg offering and according to ADSL guide my d/l is around 1850 Kbps (1.85 Mbps) and u/l around 378 Kbps (0.4 Mbps).

Edit - And as Stewart says, ignore the numbers from your router. My DG834G says exactly the same thing.
 

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Sorry, as Schiuming says, its correctly called sync rate but is very
misleading as it tends to indicate what you think you can download at...

There are so many different factors that can affect your throughput but
the most indicative ones are your SNR and Loop Attenuation. Basically
problems with connections (Lines dropping and erratic behaviour) will
more likely occur with an SNR of below 6...

Loop attenuation in basic terms indicates the quality of your
connection to the exchange circuits, the higher the number the worse it
is...again this could have many factors having a bearing on this
including the quality of your internal wiring, the quality of the
copper to and from your local CAB box (green BT box down the road)...As
the attenuation gets higher and higher the more the hardware has
difficulty distinguishing data from noise.

When migrating to ADSL Max, the first ten days from activation or
regrade undergo a 'traffic shaping' period whereby the CISCO kit in the
exchange actively tries to negotiate the most stable and fastest
connection speeds...as said earlier, you will notice a lot of dropped
connections with an SNR of around 6db...You will notice that upon
reconnection that your sync rate will be lower but the SNR will
increase slightly...this is the traffic shaping period....

Bit of a ramble but some useful info there...
 

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This confuses me too!

I have just been upgraded to an 'up to 8mb' service.

With connection speed of 7.1Mpbs (according to the tele's in the system tray)

Sync speed (if this is what is shown when I hover over the two arrows in system tray) is 7136 kbps

When I run the above speed test I get 4.96 Mbps
which
is around 635.08 KB/s

including
overheads


Is this right too as I was expecting to get results from the speed test of close to 7.1Mbps?
Garfie, based upon that but not knowing whether you have a shared
internet connection or any other activity on your connection (downloads
etc) I would hazard a guess that you are between a mile and 2 miles
from your exchange...

Thats a pretty good result considering the state of BT lines these
days, I have a friend who can literally throw a stone at our exchange
from his house and he isnt getting as fast as you!!
 

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Now im confused again!!

Stewart, using your link I got:


920.10 Kbps


which is around 115.01 KB/s
including overheads

Considering im on an 'up to 8mb' connection would this be very poor?
With Force9 I used to download at speeds over 400 KB/s
#

Gary, yes that is very poor but again, I dont know how far from the
exchange you are and again, there could be a number of other factors
that have affected your situation....

Internal wiring - try taking the lower face plate off your master
socket (thereby effectively disabling the rest of your home phone
network - extensions etc) and plugging your router directly into the
master socket, if you get a much higher SNR and lower Loop attenuation
then you know you have issues with your internal wiring...

Also, Gary and other peeps reading this, if you have a wireless router,
for god sake please make sure its secured properly, im sat here in my
back garden, sipping a JD and coke enjoying someone elses unsecured
wireless connection and quite fast it is too!
 

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Discussion Starter · #19 ·
I took this from my router.....

Posted Image


A week ago I was downloading between 400-600kb/s with Force9, now im lucky to hit 200kb/s with Zen.
 

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Ok, maybe my definition of sipping is a little off (with another pint of JD in his hand lol)

Those figures seem fine Gaz, the slower throughput could indicate a number of things...

By co-incidence (and by BT's own admission) your exchange could be
heavily overloaded/oversubscribed causing massive contention ratio
issues - basically too much traffic on your connection...

BT admit that due to OFTEL's almost dictorial influence that they
cannot handle the traffic demands that are now being placed upon their
network and are struggling big time to upgrade in time with demand...

So Gaz, although your figures are fine, you could be the victim of an overloaded contention ratio and/or overloaded exchange...
 
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