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[d2d4j]

Hi

Please see the result when QoS turned off this morning.

I will leave running with QoS turned off until Thursday or Friday then turn QoS back on, where it should be easy to see on the graph from Samknows when off and on.

I hope that helps, but I do wonder why when QoS is on, but no rules shows for either Lan or Wan, why it makes a difference, other then as suggested, it is slowing due to checking

Many thanks

John 

[burakkucat]

   Hmm . . . Very interesting. Thank you. 

To be honest, I don't really understand what is occurring. Considering the HG612 (configured exactly as distributed by Openreach), it is just a pure bridge, converting from/to VDSL2 to/from Ethernet. Where in that setup could any form of QoS be configured to operate meaningfully? My answer is "nowhere". There is just a frame of data passing through the HG612 . . . it enters in one format and exits in another format.

Hopefully we can reach a sensible understanding as to what is taking place. 

[d2d4j]

Hi

If it helps to better understand, please see 2 pics showing the QoS before disabling QoS.

Many thanks

John

[d2d4j]

Hi

Please see last pic of QoS turned back on

Many thanks

John

[Dray]

So is that a rise with QOS off and a fall with QOS on or something else?

[d2d4j]

Hi dray

Sorry, the rise is with QoS disabled, the drop is when QoS was enabled.

It would appear that you were correct with your advice

Also, I checked all the other graphs, upstream jitter etc, even speedtests using speedguide.net, helweb as test server and all looked OK with no changes but a rise in speed upload

Many thanks

John

[Dray]

Thanks, I'll just fix my question

[atkinsong]

I'm using the HG612 as a VDSL router, just turned of QOS and typical upload increased from 10.5 to 12!

Thanks for flagging this.

[aesmith]

This doesn't specially surprise me, it must be quite processor intensive looking inside those PPPoE packets and managing queueing.   I really comes back to what Weaver was saying about knowing the upload rate, shape the output from the router to suit, and you can run the QoS on the router instead.

[d2d4j]

Hi

Yes, I believe it is due to processing of QoS, but if you look at my 2 pics showing the QoS, when enabled, there are no rules/policies setup fir WAN or LAN.

Many thanks

John

[roseway]

I've just experimented here with an HG612 in bridge mode, and got similar results to the others (using speedof.me):

Upload speed with QoS enabled: 18.05 Mbps
Upload speed with QoS disabled: 19.88 Mbps

[Dray]

So I just looked inside my HG612 advanced settings and sure enough QOS was enabled.
Now disabled

[burakkucat]

Yes, I believe it is due to processing of QoS, but if you look at my 2 pics showing the QoS, when enabled, there are no rules/policies setup fir WAN or LAN.

So we now have a definite and (multiple) verified result that a HG612 with QoS disabled shows a greater US throughput than when the same device has QoS enabled.

The other interesting fact (as John recounts, above) is that even without any defined rules the overhead generated by turning on QoS is sufficient to degrade the US throughput.

[WWWombat]

Has anyone tried defining QoS rules? And then sending traffic that uses them?

[guest]

What happens to your latency when you turn QoS off and max the upstream?

I'd suspect there's a little bit of "wiggle-room" being left on US so everything else doesn't get lagged out.