C
CeroWrt Blog
blog.cerowrt.org · Company blog · on HN since 2016
Dave Täht's CeroWrt blog on bufferbloat, fq_codel and cake queue management, network testing tools, and router firmware.
What HN saysHN links it for fq_codel and bufferbloat explanations and network testing advice; the author comments that ISPs should ship fq_codel in customer gear.
19HN people shared it
6linked it in comments
21stories submitted
111story points
1 year agolast shared
2016people per year2026
Most-shared posts
- 1The state of fq_codel and cake in 20223 people · 34 points · first shared 2022 · 7 comments on HN
- 2New features and flaws of speedtest.net and Cloudflare3 people · 7 points · first shared 2023 · discussion on HN
- 3Bufferbloat on the Internet backbone3 people · 4 points · first shared 2017 · discussion on HN
- 4Flaws and features in the flent network measurement tool3 people · 3 points · first shared 2023 · discussion on HN
- 5Net Neutrality advocates: Care to try some technical solutions instead?3 people · 2 points · first shared 2018 · discussion on HN
- 6Solving the crypto-fq bug in ath9k (2016)2 people · 40 points · first shared 2016 · 9 comments on HN
- 7Sane Uses for Fiber2 people · 2 points · first shared 2023 · discussion on HN
- 8Homepage2 people · first shared 2023
- 9Space travel via tether between asteroids1 people · 8 points · first shared 2023 · discussion on HN
- 10Blinkinlights Are a Curse1 people · 3 points · first shared 2024 · 1 comments on HN
- 11A quick look at TCP BBR1 people · 3 points · first shared 2016 · discussion on HN
- 12I've never really recovered from the loss of the lab1 people · 2 points · first shared 2017 · discussion on HN
- 13Dave Taht´s 2024 predictions for the Tech Industry1 people · 1 points · first shared 2024 · 1 comments on HN
- 14Drops at Juniper – exploring VOQ vs. SQM technology1 people · 1 points · first shared 2023 · discussion on HN
- 15An Upgrade in Place1 people · 1 points · first shared 2023 · discussion on HN
What HN people wrote when they linked it
toomuchtodo · 2025-04-01
https://en.wikipedia.org/wiki/Dave_T%C3%A4ht
https://blog.cerowrt.org/
https://lists.bufferbloat.net/pipermail/bloat/2025-April/018212.html
dtaht · 2024-03-09
one of my sadnesses is so few tests, except those designed by the bufferbloat project, test up + down + latency at the same time.
I like this new one: https://github.com/Zoxc/crusader/releases/tag/v0.0.10-testing. My favorite remains the rrul test out of the flent.org suite.
Most web speed tests have nearly no predictive power for testing videoconferencing quality, although I am delighted speed test.net cloudflare and others have added a "responsiveness" metric that too few see... https://blog.cerowrt.org/post/speedtests/
dtaht99 · 2018-07-03
Recently I ranted at the ISPs and at the network neutrality people. fq_codel (RFC8290) is now nearly ubiquitous in as the default queuing mechanism in most linux distributions, and it is long past time more ISPs supplied it in the gear they give customers.
http://blog.cerowrt.org/post/net_neutrality_customers/
sch_cake (derived from fq_codel with an integral shaper) is about to enter the Linux mainline after years of baking in openwrt.
https://lwn.net/SubscriberLink/758353/05c20f25115c852d/
We can end bufferbloat, now, on everything.
muxamilian · 2023-11-06
It sounds crazy but fortunately fair queuing is becoming more and more prevalent, making sure everyone plays nice. Every iPhone has it: https://blog.cerowrt.org/post/state_of_fq_codel/
wtallis · 2019-03-19
Excessive channel scans have been a problem on Linux, too: http://blog.cerowrt.org/post/disabling_channel_scans/
melchebo · 2016-04-15
It seems like everything with buffer/process queues needs a good polish to optimize for fairness.
E.g. this is just being readied: http://blog.cerowrt.org/post/fq_codel_on_ath10k/
(also note higher throughput as result)