Re:Research shows that nearly every U.S. cell provider is do...
by ti_ranger on Tuesday September 18, 2018 @12:07PM
(#18016418)
> What kind of different class of traffic would give throttled traffic to different forms of on-demand video stream services? NBCSports, Netflix, YouTube Premium and Amazon prime.
There may be a small amount of packet loss at the time due to the ISP shaping their traffic to prevent congestion.
The higher the latency, the more the packet loss will affect the throughput.
The services you mention all use different CDNs, which may all have different latencies at the point of observation:
> NBCSports, Netflix, YouTube Premium and Amazon prime
NBCSports - I would guess Akamai, who deploys at IX and ISP
Netflix - Usually Openconnect CDN devices at IX or ISP
YouTube Premium - Google Global Cache deployed at IX and/or ISP (GCCs are deployed in most consumer ISPs, probably the best-distributed CDN at the moment).
Amazon prime - Cloudfront, deployed mainly at IX, I am not sure if they have deployments in ISPs yet.
(I haven't tried to find more information on their approach, but https://dd.meddle.mobi/index.html seems to indicate that CDN issues shouldn't affect the way they measure, but until I do some checking on whether popular DPI platforms would be able to be fooled by this, and without them providing timestamped data, I'll have to test myself against DPI policies I wrote and I hope my ex-colleagues haven't changed too much ...)
There may be a small amount of packet loss at the time due to the ISP shaping their traffic to prevent congestion.
The higher the latency, the more the packet loss will affect the throughput.
The services you mention all use different CDNs, which may all have different latencies at the point of observation:
> NBCSports, Netflix, YouTube Premium and Amazon prime
NBCSports - I would guess Akamai, who deploys at IX and ISP Netflix - Usually Openconnect CDN devices at IX or ISP YouTube Premium - Google Global Cache deployed at IX and/or ISP (GCCs are deployed in most consumer ISPs, probably the best-distributed CDN at the moment). Amazon prime - Cloudfront, deployed mainly at IX, I am not sure if they have deployments in ISPs yet.
(I haven't tried to find more information on their approach, but https://dd.meddle.mobi/index.html seems to indicate that CDN issues shouldn't affect the way they measure, but until I do some checking on whether popular DPI platforms would be able to be fooled by this, and without them providing timestamped data, I'll have to test myself against DPI policies I wrote and I hope my ex-colleagues haven't changed too much ...)