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UHD

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  # 1618011 26-Aug-2016 18:07
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There are a number of factors that can slow you down not least of which is that your ISP controls a very small section in a very complex series of tubes between you and the server you are requesting data from. Given that you can achieve near line speed in a random speed test but are having trouble with this specific service I would be inclined to suggest routing issues beyond the immediate control of the ISP are a likely factor.




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  # 1618072 26-Aug-2016 19:20
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Hi UHD,

 

There are a number of factors that can slow you down not least of which is that your ISP controls a very small section in a very complex series of tubes between you and the server you are requesting data from. Given that you can achieve near line speed in a random speed test but are having trouble with this specific service I would be inclined to suggest routing issues beyond the immediate control of the ISP are a likely factor.

 

I'm not sure I expressed myself clearly enough (or I didn't understand your reply). What I'm saying is that I can only get 1.3MB download speed from my NNTP Server while concurrently running a speed test. When the test completes the speed on my SABDNZB client drops back down to about 5% of that. By line speed I understand this to be the optimal speed the line can furnish, assuming there are no extraneous congestion issues. This is about 13MBps, compared to actual downloading of 1.3MBps during a speed test and 68B/s at other times when using my NNTP news server.

 

So I struggle to see how this can relate to the news server rather than my ISP, but am open to learning from those of you who understand such things.

 

 

Toejam

 

Possibly your news server provider prioritizing traffic to the test block, but the rest of the traffic being hit by congestion?

 

 I'd suggest trying an alternative new server - I'd assume you have a secondary block server, I'd recommend testing with them only to see if the issues persist.

 

 

 

 

 

My understanding is that my ISP is in between the news server and my PC.  How could the news server delivery be affected by another process in my browser in terms of the speed they deliver at?  I can understand that my ISP is able to work that, my PC might be doing something, but surely the news server isn't looking at what my PC is doing or what other processes are running and then deciding how much to open the tap, right?

 

 

 

 

 

 

 

 

 

 


 
 
 
 


827 posts

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  # 1618078 26-Aug-2016 19:29
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Digikiwi:

Hi UHD,

 

There are a number of factors that can slow you down not least of which is that your ISP controls a very small section in a very complex series of tubes between you and the server you are requesting data from. Given that you can achieve near line speed in a random speed test but are having trouble with this specific service I would be inclined to suggest routing issues beyond the immediate control of the ISP are a likely factor.

 

I'm not sure I expressed myself clearly enough (or I didn't understand your reply). What I'm saying is that I can only get 1.3MB download speed from my NNTP Server while concurrently running a speed test. When the test completes the speed on my SABDNZB client drops back down to about 5% of that. By line speed I understand this to be the optimal speed the line can furnish, assuming there are no extraneous congestion issues. This is about 13MBps, compared to actual downloading of 1.3MBps during a speed test and 68B/s at other times when using my NNTP news server.

 

So I struggle to see how this can relate to the news server rather than my ISP, but am open to learning from those of you who understand such things.

 

 

Toejam

 

Possibly your news server provider prioritizing traffic to the test block, but the rest of the traffic being hit by congestion?

 

 I'd suggest trying an alternative new server - I'd assume you have a secondary block server, I'd recommend testing with them only to see if the issues persist.

 

 

 

 

 

My understanding is that my ISP is in between the news server and my PC.  How could the news server delivery be affected by another process in my browser in terms of the speed they deliver at?  I can understand that my ISP is able to work that, my PC might be doing something, but surely the news server isn't looking at what my PC is doing or what other processes are running and then deciding how much to open the tap, right?

 

 

 

 

 

 

 

 

 

 

 

 

Ah, you weren't very clear on the fact that running a "speed test" is what clears your line.

 

Which site are you running the speed test on? It could well be a router issue, an issue with your desktop's configuration, or it could be an ISP issue. A lot of variables. Are you able to try out with a different computer, tell us more about your network config incl. what modem/router, type of connection (ADSL, ADSL2+, VDSL2, Fibre), and anything else that might be relevant?

 

Cheers.




Anything I say is the ramblings of an ill informed, opinionated so-and-so, and not representative of any of my past, present or future employers, and is also probably best disregarded.


1070 posts

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  # 1618708 28-Aug-2016 14:37
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I'm no expert and happy to be corrected, but when researching a sudden drop in torrent speeds after orcon/slingshot 'upgraded' my plan, I found plenty of references explaining how many ISP's cheat on the speed tests. For instance priority routes to the server. One method, that fits with the symptoms you describe, was that they disable traffic shaping for the duration of the speed test. 

 

Not saying - just saying....?


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  # 1618725 28-Aug-2016 15:11
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tripper1000:

 

I'm no expert and happy to be corrected, but when researching a sudden drop in torrent speeds after orcon/slingshot 'upgraded' my plan, I found plenty of references explaining how many ISP's cheat on the speed tests. For instance priority routes to the server. One method, that fits with the symptoms you describe, was that they disable traffic shaping for the duration of the speed test. 

 

Not saying - just saying....?

 

 

If an ISP wanted to a cheat a speed test result they would simply prioritise the traffic to the desired server using the IP or DPI. You wouldn't "unshape" a connection for the duration of a speedtest.

 

 


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