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These graphs surprised me...

pcorker
Grafter
Posts: 309
Registered: 05-09-2007

These graphs surprised me...

I just tripped over these graphs (You lot have probably all seen them before!) which seem to (my unknowledgeable eye) look disastrous for Plusnet:
http://www.kewlio.net/cgi-bin/smokeping.cgi?target=TheInternet.UKInternet
Is it just a case of "...Lies and Statistics" or do they matter?
I am rather guessing that they show TCP packet rates. Would UDP packets probably show a similar pattern or would they be expected to be completly unrelated?
18 REPLIES
N/A

These graphs surprised me...

Interesting - I love graphs like this! Could anyone explain what they mean? Smiley Plusnet's avg RTT (whatever that is) looks quite high compared to the others - is that the problem?
James
Grafter
Posts: 21,036
Registered: 04-04-2007

These graphs surprised me...

Are these just ping times to a specific site?
Firejack
Grafter
Posts: 921
Registered: 26-06-2007

These graphs surprised me...

Looks that way. Can't say the information is presented very well. Doesn't tell you want the target is for a start!
At a guess though judging buy the response times its probably the Plus.net website. Now I believe the Plus.net webserver is in Sheffield and not London and that is why the results are higher then other ISPs who probably have their web server in London also.

Still only guessing. Not a lot of information to go on :shock:
James
Grafter
Posts: 21,036
Registered: 04-04-2007

These graphs surprised me...

Would explain the higher results if the traffic is going to london and then back to Sheffield, but some specifics would be nice Smiley
Community Veteran
Posts: 26,353
Thanks: 606
Fixes: 8
Registered: 10-04-2007

These graphs surprised me...

It would make much more sense of they all tested the same thing, e.g. the BBC website.
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
James
Grafter
Posts: 21,036
Registered: 04-04-2007

These graphs surprised me...

Absolutely. For comparison purposes, it's useless if it's all testing something different for each ISP.
pcorker
Grafter
Posts: 309
Registered: 05-09-2007

These graphs surprised me...

But even allowng for inaccuracies there is a pattern to the graphs
(dont forget to look at the scale on the y axis! 100ms for Plusnet, below 10 for nearly everyone else!)
Plusnet is substantially worse than every other ISP tested.
It is the only one showing pings up to 100ms (you need to click on Plusnet on the left menu to see those pings) Can geograpy adversely effect Plusnet alone out of so many ISPs?
James
Grafter
Posts: 21,036
Registered: 04-04-2007

These graphs surprised me...

How can you judge this when you don't know what is being tested?!
Community Veteran
Posts: 26,353
Thanks: 606
Fixes: 8
Registered: 10-04-2007

These graphs surprised me...

Here's typical pings I get from Plusnet:

Pinging xxx.xxx.xxx.xxx with 32 bytes of data:


Reply from xxx.xxx.xxx.xxx: bytes=32 time=11ms TTL=61
Reply from xxx.xxx.xxx.xxx: bytes=32 time=11ms TTL=61
Reply from xxx.xxx.xxx.xxx: bytes=32 time=12ms TTL=61
Reply from xxx.xxx.xxx.xxx: bytes=32 time=13ms TTL=61

Ping statistics for xxx.xxx.xxx.xxx:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 11ms, Maximum = 13ms, Average = 11ms


I get these times like this every time I try it, any time of day.
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
sophos9
Grafter
Posts: 760
Registered: 12-09-2007

These graphs surprised me...

Was that IP 127.0.0.1? :lol:

Latency is OK for me too..
pcorker
Grafter
Posts: 309
Registered: 05-09-2007

These graphs surprised me...

James

Whatever is being tested plusnet is doing far worse than all the other ISPs at it!

Is this in itself not worrying?

The graph seems to show in some way the response time in milliseconds to pinging somewhere every 5 miutes. The constants are presumably the same for every ISP
James
Grafter
Posts: 21,036
Registered: 04-04-2007

These graphs surprised me...

I refuse to be remotely concerned by anything that is completely useless.
Community Veteran
Posts: 26,353
Thanks: 606
Fixes: 8
Registered: 10-04-2007

These graphs surprised me...

Those graphs would only mean something if they tested against something realistic. E.g.

C:\Documents and Settings\John>ping -n 10 www.bbc.co.uk


Pinging www.bbc.net.uk [212.58.226.232] with 32 bytes of data:

Reply from 212.58.226.232: bytes=32 time=12ms TTL=120
Reply from 212.58.226.232: bytes=32 time=14ms TTL=120
Reply from 212.58.226.232: bytes=32 time=13ms TTL=120
Reply from 212.58.226.232: bytes=32 time=13ms TTL=120
Reply from 212.58.226.232: bytes=32 time=12ms TTL=120
Reply from 212.58.226.232: bytes=32 time=11ms TTL=120
Reply from 212.58.226.232: bytes=32 time=11ms TTL=120
Reply from 212.58.226.232: bytes=32 time=12ms TTL=120
Reply from 212.58.226.232: bytes=32 time=13ms TTL=120
Reply from 212.58.226.232: bytes=32 time=13ms TTL=120

Ping statistics for 212.58.226.232:
Packets: Sent = 10, Received = 10, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 11ms, Maximum = 14ms, Average = 12ms
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
Plusnet Staff
Plusnet Staff
Posts: 12,169
Thanks: 18
Fixes: 1
Registered: 04-04-2007

These graphs surprised me...

Looking at the ping time for PlusNet the average is showing as 10.52ms, which is about the same as Energis Squared and LoNap. May depend on exactly what they are pinging, for example if it's the portal then it'll have to go through London and up to Sheffield.

A traceroute would be of more use to see exactly where it is going and where the latency is appearing. I would suspect it's just because of distance though, as far as I know Energis Squared are still headquatered in Leeds so could explain the same result they have.