Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

> On Jul 25, 2018, at 12:29 AM, Dave Taht wrote: > > On Tue, Jul 24, 2018 at 3:23 PM Pete Heist > wrote: > > Also presenting the plots no-one asked for or probably needs, fast.net > vs 3km NLOS point-to-point WiFi, both without shaping and > with Ca

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

It died for some reason. restarted, logging now. On Tue, Jul 24, 2018 at 12:38 PM Pete Heist wrote: > > > On Jul 24, 2018, at 3:51 PM, Dave Taht wrote: > > Now that you can join the party, I note there IS a flent server in england > with irtt on it. > > flent-london.bufferbloat.net > > > Hmm, an

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

> On Jul 24, 2018, at 3:51 PM, Dave Taht wrote: > > Now that you can join the party, I note there IS a flent server in england > with irtt on it. > > flent-london.bufferbloat.net Hmm, anything I can look at on the London server? $ irtt client flent-london.buf

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

I should note that I think the ER-X is running out of CPU at times in this configuration, so that may contribute to the weirdness somewhat. On Tue, 24 Jul 2018 at 20:05 Tristan Seligmann wrote: > Here's my results from South Africa. Ping test while running the fast.com > test, and the tcp_ndown

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

Hi Kevin, Maybe don't use the ptm keyword, but rather reduce the shaper rates to at most 98.46 percent of the sync rate... On July 24, 2018 4:54:01 PM GMT+02:00, Kevin Darbyshire-Bryant wrote: > > >> On 24 Jul 2018, at 14:51, Dave Taht wrote: >> >> Now that you can join the party, I note th

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On Mon, 2018-07-23 at 19:36 -0700, Dave Taht wrote: > George does your result mean you also have a crappy cablemodem? > Yes, I think so. It's a Linksys DPC3008 DOCSIS 3.0. Also, I cannot get it to behave any differently with hping3 as Arie suggested. _

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On 24 July 2018 at 11:59, Dave Taht wrote: > On Mon, Jul 23, 2018 at 7:17 PM Ryan Mounce wrote: >> >> > On 24 July 2018 at 00:14, Dave Taht wrote: >> >> what does the fast.com test do to you with and without inbound shaping >> >> on your link? >> >> Sorry, brain dead today and didn't properly re

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

George does your result mean you also have a crappy cablemodem? On Sat, Jul 21, 2018 at 10:20 AM Georgios Amanakis wrote: > > On Sat, 2018-07-21 at 09:09 -0700, Dave Taht wrote: > > > > 1) Can someone else on a cablemodem (even without the latest cake, > > this happens to me on older cake and fq_c

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On Mon, Jul 23, 2018 at 7:17 PM Ryan Mounce wrote: > > > On 24 July 2018 at 00:14, Dave Taht wrote: > >> what does the fast.com test do to you with and without inbound shaping > >> on your link? > > Sorry, brain dead today and didn't properly read your original email. > I have now got flent up an

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

Unloaded latency is 5ms. My retailer has a 100Mbps FIFO shaper that will queue up to 100ms worth of full MTU packets. Without ingress shaping, loaded latency builds up to about 95ms and then stays there for the remainder of the test. With ingress shaped to 99Mbps with cake, fast.com loaded latenc

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

I wish vumatel the best of luck. One thing that still will help the fiber networks is applying fq_* derived algoritms. This is cake vs sonic (gpon) fiber in san francisco. They have a totally reasonable (60ms) buffer in their ONT, cut to... well... the result I get is even less latency loaded than

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

I don't know if this is possible for higher density cities, but the fiber ISP here uses P2P fiber ring from the house all the way back to the CO. It's only at the CO that they aggregate to the GPON port. This means I do not share any field fiber with anyone else and the ring design allows for a sin

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On Mon, 23 Jul 2018 at 17:26 Jonas Mårtensson wrote: > On Mon, Jul 23, 2018 at 4:56 PM Dave Taht wrote: > >> Great info, thx. Using this opportunity to rant about city-wid >> networks, I'd have done something so different >> than what the governments and ISPs have inflicted on us, substituting >

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

Hi Dave, To follow you on this tangent ;) I have come to the conclusion that the question about whether PtP is better or GPON heavily depends on who is paying. For a local community like Amsterdam the goal probably was to be able to accommodate as many possible network topologies as possible so

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On Mon, Jul 23, 2018 at 8:26 AM Jonas Mårtensson wrote: > > > > On Mon, Jul 23, 2018 at 4:56 PM Dave Taht wrote: >> >> Great info, thx. Using this opportunity to rant about city-wid >> networks, I'd have done something so different >> than what the governments and ISPs have inflicted on us, subst

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On Mon, Jul 23, 2018 at 4:56 PM Dave Taht wrote: > Great info, thx. Using this opportunity to rant about city-wid > networks, I'd have done something so different > than what the governments and ISPs have inflicted on us, substituting > redundancy for reliability. > > I'd have used bog standard e

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

Great info, thx. Using this opportunity to rant about city-wid networks, I'd have done something so different than what the governments and ISPs have inflicted on us, substituting redundancy for reliability. I'd have used bog standard ethernet over fiber instead of gpon. The only advantages to gpo

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On 22 July 2018 at 08:40, Arie wrote: > You're now the third person where I've seen the hping3 trick work, I'm > pretty pleased it's with Mr Bufferbloat himself ;) > > I figured this out by accident some time ago. I used fq_codel and later cake > to keep people happy at a small LAN party where 10

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

I believe that cable modems all default to 192.168.100.1, this seems to be backed by "Cable Modem Operations Support System Interface Specification", CM-SP-CM-OSSIv3.1-I04-150611: " • The CM MUST support 192.168.100.1, as the well-known diagnostic IP address accessible only from the CMCI

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

> On Jul 21, 2018, at 6:09 PM, Dave Taht wrote: > > PS I also have two other issues going on. This is the first time I've > been using irtt with a 20ms interval, and I regularly see single 50+ms > spikes (in both ping and irtt) data and also see irtt stop > transmitting. irtt should keep sending

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

You're now the third person where I've seen the hping3 trick work, I'm pretty pleased it's with Mr Bufferbloat himself ;) I figured this out by accident some time ago. I used fq_codel and later cake to keep people happy at a small LAN party where 10 people shared a 40Mbit DOCSIS connection. Year

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

hmmm... And wow, does this modem have difficulty with udp Summary of ping test run 'hping3-cake-docsis' (at 2018-07-21 22:22:14.758201): avg median # data pts Ping (ms) ICMP :26.5023.20 ms2395 Ping (ms) UDP : 1.0244.2

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

wow. That is the best dslreports test result for cable I have ever had. with hping3 -2 -d 0 -s 10080 -k -p 80 -i u150 96.120.89.153 http://www.dslreports.com/speedtest/36209937 Without: http://www.dslreports.com/speedtest/36210095 You say a different cablemodem does better without hping3 runni

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

I had a similar issue with my previous cable modem, whatever I shaped to didn't matter, I still had long delays. I "fixed" it by continuously sending a stream of empty UDP packets upstream: hping3 -2 -d 0 -s 10080 -k -p 80 -i u150 IP-OF-FIRST-OUTSIDE-CABLE-HOP-HERE On 21 July 2018 at 22:36, Dave

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

> On 21 Jul, 2018, at 11:01 pm, Dave Taht wrote: > > The cmts buffer fills more rapidly, particularly in slow start, while > presenting packets to the inbound shaper at 100mbit. cake starts > signalling, late, trying to achieve but at that point the apparent > RTTs are still growing rapidly (bec

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

To summarize: A) I think the magic 85% figure only applies at lower bandwidths. B) We are at least partially in a pathological situation where CMTS = 380ms of buffering, token bucket fifo at 100mbit Cakebox: AQMing and trying to shape below 85mbit, gradually ramping up the signalling once per 100

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

Yes. Unshaped it is ~20mbit, the tests were ran with cake shaping at 80%. On Sat, Jul 21, 2018, 2:20 PM Dave Taht wrote: > hmm? you only have 15mbits down? > On Sat, Jul 21, 2018 at 11:18 AM Georgios Amanakis > wrote: > > > > On Sat, 2018-07-21 at 10:47 -0700, Dave Taht wrote: > > > for referen

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

It does. On 21 July 2018 at 20:02, Dave Taht wrote: > In other news: > > https://github.com/tohojo/sqm-scripts/issues/68 > > does the ER4 have act_police? > > On Sat, Jul 21, 2018 at 10:55 AM Arie wrote: > > > > It's Ziggo NL/Liberty Global. I'm surprised by the reported latency in > the fast.c

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

hmm? you only have 15mbits down? On Sat, Jul 21, 2018 at 11:18 AM Georgios Amanakis wrote: > > On Sat, 2018-07-21 at 10:47 -0700, Dave Taht wrote: > > for reference can you do a download and capture against flent-newark, > > while using the ping test? > > > > New data, this is what I did: > > 1) S

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

In other news: https://github.com/tohojo/sqm-scripts/issues/68 does the ER4 have act_police? On Sat, Jul 21, 2018 at 10:55 AM Arie wrote: > > It's Ziggo NL/Liberty Global. I'm surprised by the reported latency in the > fast.com test. Both the site and the flent ping test report about the same

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

for reference can you do a download and capture against flent-newark, while using the ping test? On Sat, Jul 21, 2018 at 10:44 AM Georgios Amanakis wrote: > > On Sat, 2018-07-21 at 20:23 +0300, Jonathan Morton wrote: > > > > I'd like to see a tcptrace of what's going on here. A packet capture > >

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

Thank you. At least for your ISP (?), at 250mbit, you can hold the damage down to something reasonable, and certainly you are winning big on the upload. Good to know the ER4 can keep up, also. On Sat, Jul 21, 2018 at 10:36 AM Arie wrote: > > Unshaped reno attached. > > On 21 July 2018 at 19:27, D

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

On Sat, Jul 21, 2018 at 10:28 AM Georgios Amanakis wrote: > > The previous one was with: > net.ipv4.tcp_congestion_control=cubic > > I retried with: > net.ipv4.tcp_congestion_control=reno > > Georgios In the fast test this has no effect on the remote server's tcp, it's always going to be reno. T

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

Yours is not as horrific as mine in either case. Can you provide an unshaped result as well? On Sat, Jul 21, 2018 at 10:24 AM Arie wrote: > > Two more data points. Shaped my connection to 250Mbit out of the advertised > 250Mbit (my usual setting) and shaped to 200Mbit out of the 250Mbit. This

Re: [Cake] inbound cake or fq_codel shaping fails on cable on netflix reno

> On 21 Jul, 2018, at 8:20 pm, Georgios Amanakis wrote: > > I got the same result as you. This is using latest cake. I'd like to see a tcptrace of what's going on here. A packet capture with snaplen 100 should allow me to generate one. - Jonathan Morton _