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The issue is not about 'general impressions of "Internet speed".' It is about the comparative results between different speedtest sites. I note that ookla's international sites are producing results similarly different to other sites that are similar to ookla's NZ servers. I accept the 'NO Vodafone do not filter by site' responses even though ISPs either do or have the capability to filter site specific traffic.
But then I do seek a cause for the different speedtest behaviours I see.
RuralJohnny:
Demeter: It is not the absolute reliability of speedtests that concerns me. The ookla results from US based servers (and which therefore are well outside the Vodafone network) are similarly inconsistent as results from ookla's NZ servers. That raises questions for me.
I can see a possible reason for my experience in that the ookla services will use two threads (or four for speeds >4Mbps) and Truenet uses one thread. Would that account for an approximate 2 times difference in throughput?
Another point that gives reason for suspicion: My recent speedtest.net results are now consistently close to 5Mbps. Why would that be? If the cell site I point at is lightly loaded, should I not expect speeds greater than 5Mbps? Like closer to the 7.2 Mbps DL max for HSPA? Or is 5Mbps the max speed possible for RBI connections?
That the upturn in speedtest.net results (to 5Mbps) occurred about the same time as the upturn in the Truenet results (to 2M5bps) is curious. I'll check with John Butt to see what may have changed at his end.
RuralJohnny: I see consistently faster results on speedtest.net (ookla) compared to all the other sites.
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Demeter: I hope that coffeebaron's earlier answer makes sense as it is correct.
RuralJohnny:
The reason I have been exploring this issue is that Truenet report download speeds all in excess of 91% of the ISP's advertised speed for DSL and fibre products. My, and at least one other RBI user, get speeds at around 50% of the average speed.
RuralJohnny:
One thing I noticed on testmy.net is that download speeds vary by file size. Performance comes with larger files! That has to be a function of network design.
RunningMan:RuralJohnny:
One thing I noticed on testmy.net is that download speeds vary by file size. Performance comes with larger files! That has to be a function of network design.
That's a function of how 3G broadband works - the throughput ramps up over a period of time as demand for bandwidth continues. A small file (short in duration to download) will download at a lower rate than a large file, because the large file continues for longer, and gets allocated more bandwidth (i.e. speed) as it progresses.
If different sites use different size and numbers of files to test, then the results will vary quite significantly - it's like comparing apples with oranges and expecting them to be the same.
bakewells5856: What I noticed with speed tests is that the result seems to be given closer to the peak speed measured over the test rather than average, so if your bandwidth is like a roller coaster then the test results will be somewhat overoptimistic.
the best way I find to test is to just leave something downloading for a few minutes and graph the usage.
johnr: Cell site capacity is not static, As traffic grows then capacity will be increased as required
RuralJohnny:johnr: Cell site capacity is not static, As traffic grows then capacity will be increased as required
So at what demand level is capacity increased? In other words, how poor does the service standard have to get before Vodafone decide to invest more capital to improve the standard?
johnr:RuralJohnny:johnr: Cell site capacity is not static, As traffic grows then capacity will be increased as required
So at what demand level is capacity increased? In other words, how poor does the service standard have to get before Vodafone decide to invest more capital to improve the standard?
Many factors come into capacity and planning not just speed and what speed you are getting from XYZ speedtest server
Lias: While we have this vast pool of combined knowledge posting in here.
Given everything you've mentioned, what would you suggest is the best way for an end user to get a clear picture of how well their connection is performing for international data(which is how must users perceive "internet performance")?
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