[Cerowrt-devel] Routing limit question

[Sebastian Moeller]

HI Dave,


On Oct 19, 2014, at 20:24 , Dave Taht <dave.taht at gmail.com> wrote:

> On at least one verizon device I've tried it appeared that they had
> SFQ or something similar on egress from the modem.
> 
> http://www.bufferbloat.net/projects/codel/wiki/RRUL_Rogues_Gallery#Verizon-FIOS-Testing-at-25Mbit-up-and-25Mbit-down
> 
> So you only needed to shape the download. which is good as we start
> peaking out at 50Mbit download total. But only measurements can tell.

	So on Hnymans community openwrt build a few fortunate ones on excellent lines seem to get decent results even at 110-120 Mbps combined:
https://forum.openwrt.org/viewtopic.php?pid=250989#p250989
and:
https://forum.openwrt.org/viewtopic.php?pid=251013#p251013
I have no idea why and both lines were reasonably well-behaved even without any AQM/QOS...

Also I wonder whether when we increase the quantum for higher rates to give HTB some breathing room, whether we also should increase burst and cburst? My hunch is that quantum affects the switching between the leaves, while busts and cburst should allow to dump more data to lower layers inside each leaf qdisc. And since we are running behind, maybe taking a bigger shovel can help some. (I assume this needs to be titrated not to kill latency under load, but if we can only effective have HTB execute x times per second we can easily afford to dump line-rate/maxHTB_iteratin_rate bytes per opportunity, no?) My own internet link is way to slow to test this...

Best Regards
	Sebastian

> 
> 
> On Sun, Oct 19, 2014 at 10:51 AM, Ernesto Elias <ernestogelias at gmail.com> wrote:
>> Hello everyone!
>> I have a question about the wndr3800 routing limit. I went back to the older
>> submissions to see if I can find what would be the answer for it. But in my
>> search I haven't managed to find a definite answer. From what I seen about
>> setting the limit it can do with SQM is 50, 60, or 80 mbit. I'm just
>> wondering if anyone can shed some light for me here as I have verizon fios
>> and my speeds are 50 dl/50 ul. Thank you guys very much!
>> 
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>> 
> 
> 
> 
> -- 
> Dave Täht
> 
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