unifi usg bufferbloat
Posted on October 8th, 2020My Depending on the hardware, you can upgrade the link itself with newer, smarter WiFi drivers. I went from a buffer bloat of 1.2s UP and 0.6s DOWN to effectively 0. I'm currently behind a Linux router with basically nothing but firewall rules configured; I still get an A on that test (meaningful?).
(Most routers easily handle 5-6 people and their devices. Good to know, would explain why there's a phantom eth port on some of these routers, must be used to connect between router and switch chips.
I just got an edgerouter-x how does this compare to just using smart queue? What bandwidth? To combat this, most bufferbloat fighting algorithms focus on dropping traffic before buffers fill, namely RED (random early drop) and CODEL. For oomph (gbit shaping) people often leverage lede on a pcengines apu2 or run a full distro of pfsense or linux on it. If the DSLReports test shows a letter grade worse than a B, you probably have bufferbloat. It has become apparent that in order to ensure a good internet experience all of these techniques need to be combined and used as an integrated whole, and also represented as such to end-users.". htb+sfq has been around forever. > Can anyone think of an additional dimension for improvement, besides upgrading the link itself? The current premier dsl router with cake is evenroute. If ISP routers were also using decent queuing algorithms and not buffering like crazy then that wouldn't be necessary of course, but it doesn't seem like that's going to change any time soon. I imagine the main thing that's holding back ISPs from using it on their consumer routers is the (minimal) configuration the user has to do to set to upload bandwidth limit. First one is small bw and less latency. Virgin Media in the UK don't allow third party modems.
Having vastly reduced buffering improves the responsiveness of competing TCP flows a lot, grabbing bandwidth whenever available, faster. That said... 10Gbit to the home.... ooohhhhh. I need to do more testing but it seems my C7 can handle my 100/100Mbps fiber connection doing SQM without too much issue. Since those switches have VLANs as well you can create very interesting topologies that would require much more expensive managed switches to achieve. Also, we have always made the latency/bandwidth tradeoff explicit - if you want less latency, you must want less bandwidth. what ISP? The more you know about the properties of your WAN connection, the more accurately you can configure SQM to account for the true limits of your connection. Regardless it would make a nice appliance if they ever do release a PFsense ARM image. Thus, a $15 router with a slow CPU can be fine for fixing bufferbloat. I'd hope I'd have upgraded my LAN to at least 2.5 gigabit by then, anyway.
Is there a problem you’re trying to solve?
I recently bought an Ubiquiti EdgeRouter X [1].
(.
Not tracking FIOS (gpon fiber) closely at the moment.
Most of the research that improved tcp everywhere came out of google. These days I just run OpenWRT on x86, no more will my router sit in a broken state that I can't fix by logging in over the LAN or WAN (via OpenVPN ofc).
In some cases, your connection speed may be fast enough that your router's CPU can't keep pace when doing traffic shaping. The wired side of the router is gigabit but that's just an integrated gigabit switch, it doesn't even touch any CPU. We use diffserv for this, for apps willing to use it. What Can I Do About Bufferbloat?
Cheers. Anyone have any suggestions for pfSense? Without that, it will appear that the speed of the network is fluctuating (as the buffer fills it appears your network is faster than it is, when the buffer is full it will start dropping packets which causes tcp to back off which causes the buffer to drain, now if tcp starts sending data before the buffer is empty you'll get a different apparent speed to tcp) and it is that fluctuation which causes the issues. For anyone else looking, there's quick-and-dirty notes on how to configure this back in the 1.7 release notes.
Maybe 250 max.
Sorry, I was a bit light on the details. That made it easier to avoid bloat or bugs in the ethernet switch itself, but was fundamentally incompatible with the NAT offload those switches provide, so that configuration is now almost impossible to find. Notice the improvement in bufferbloat score from D to A+. For directly managing bufferbloat, I never understood this to be a requirement. Also fq_codel derived anti-bufferbloat work has landed in many commercial wifi routers on the wifi side (eero, google wifi, some ubnt products, meraki, many others).
If the switch table says portA->portB it doesn't matter what the router on portC has decided to offload or not. How many?
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