How to Improve Buffer Bloat
- Thread starter win465
- Start date
Nullity
Very Senior Member
Best QoS tutorial, in my opinion: http://www.linksysinfo.org/index.php?threads/qos-tutorial.68795/
QoS can improve bufferbloat, but technically QoS is a separate concern from bufferbloat (which an AQM like CoDel or RED is meant to improve).
QoS can improve bufferbloat, but technically QoS is a separate concern from bufferbloat (which an AQM like CoDel or RED is meant to improve).
win465
Regular Contributor
Thank you!!! Very helpful.
sfx2000
Part of the Furniture
Concur - much of the issues with BufferBloat are actually upstream at the ISP (and their upstream providers)
Nullity
Very Senior Member
Is that your 5000th post? Congrats! (and thanks for sharing the knowledge)
Yeah, off-topic... sue me.
sfx2000
Part of the Furniture
Is that your 5000th post? Congrats! (and thanks for sharing the knowledge)
Yeah, off-topic... sue me.
Kinda lost count - perhaps I'm spending too much time here
Nice catch and thanks - thanks to everyone in the community for sharing their knowledge - I've learned much from all of you!
Now to sort a recent broadband issue (upstream, intermittent connectivity issues, nothing with the in-house side)
Been trying to reduce my buffer bloat with no luck. I have already turned on Adaptive Qos, but no luck. Any suggestions would be greatly appreciated. Thank you!
Router: AC87U
ISP: Charter
Firmware: Merlin 58 alpha 3
Adaptive Qos enabled
After enabling Adaptive QoS, set your max download and upload speed slightly below your ISP provided speed.
Adaptive QoS is amazing indeed.
I've been puzzled by one phenomenon of the buffer bloat test on my GPON fiber connection. Download speeds up to maximum throughput almost instantly. Upload however climbs to maximum throughput gradually. I thought that was due to the nature of GPON but QoS eliminates the slow climb as well as buffer bloat on upload.
Sadly though Adaptive QoS doesn't handle traffic in tunnels. All sorts of "tunnels"...ipsec, 6in4, OpenVPN..
I've been puzzled by one phenomenon of the buffer bloat test on my GPON fiber connection. Download speeds up to maximum throughput almost instantly. Upload however climbs to maximum throughput gradually. I thought that was due to the nature of GPON but QoS eliminates the slow climb as well as buffer bloat on upload.
Sadly though Adaptive QoS doesn't handle traffic in tunnels. All sorts of "tunnels"...ipsec, 6in4, OpenVPN..
win465
Regular Contributor
Thank you! This worked.
it is easy to do download test within ASUS - Merlin FW router (SSH or telnet) -
but how to do upload test from ASUS - Merlin FW router ?
is there some way to use this? https://github.com/RMerl/asuswrt-me...4f38f5eaab2/release/src/router/rc/speedtest.c
Code:
wget http://some-fast-server-near-you.com/file.test -O /dev/nullbut how to do upload test from ASUS - Merlin FW router ?
is there some way to use this? https://github.com/RMerl/asuswrt-me...4f38f5eaab2/release/src/router/rc/speedtest.c
JGrana
Very Senior Member
I use speedtest-cli via Entware-ng. Speedtest-cli is a python based program that uses the same servers that speedtest.net uses.
From what I remember, I first installed pip-tools:
opkg install python-pip
then used pip to install speedtest-cli:
pip install speedtest-cli
Here is a link to github:
https://github.com/sivel/speedtest-cli
Works quite well. I get numbers on the router (an AC88U) that are very close to running speedtest.net on my PC.
I have been thinking of asking kvic to make a tools tab in the WebUI just like he did for NTP ;-)
That would have the added benefit of being able to hassle ISPs when speeds aren't where they should be.
JGrana
Very Senior Member
Indeed. No more "Please unplug your router and connect directly to the cable modem"!!!
I installed and tested a few weeks ago. I was having what appeared to be slow Web access. I wanted to check both the external network by running speedtest right on the router (no WiFi or Ethernet) then on a PC connected over WiFi. Same remote servers in both cases.
The problem turned out to be the Website I was accessing....but now I have a new network tool ;-)
Brent S. Smithline
New Around Here
RT-AC68U Asus-Merlin 384.4_2 Setup Adaptive QoS / Manual Setting / fq_codel / with upload and download set bellow the rated speed set by the ISP / Media Streaming
Ran DSL Reports speed test a number of time A or A+ each time on BufferBloat ( http://www.dslreports.com/speedtest )
Ran DSL Reports speed test a number of time A or A+ each time on BufferBloat ( http://www.dslreports.com/speedtest )
FreshJR
Very Senior Member
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