[Make-wifi-fast] crypto-fq bug postmortem is up

Loganaden Velvindron loganaden at gmail.com
Sat Sep 17 13:50:54 EDT 2016

On Sat, Sep 17, 2016 at 9:35 PM, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
> Loganaden Velvindron <loganaden at gmail.com> writes:
>> On Sat, Sep 17, 2016 at 9:12 PM, Loganaden Velvindron
>> <loganaden at gmail.com> wrote:
>>> On Sat, Sep 17, 2016 at 1:42 AM, Dave Taht <dave.taht at gmail.com> wrote:
>>>> at:
>>>> http://blog.cerowrt.org/post/crypto_fq_bug/
>>>> I am very interested to try to remember more of the suggestions, and
>>>> blind alleys, and why we thought they were possibilities... and draw
>>>> more conclusions as to what we did right, and wrong.
>>>> Please comment, and send links.
>>>> If I have more time, I'll make it shorter. Or funnier. And add more
>>>> pictures, captures, and links. Finding this bug *eventually* got to be
>>>> fun.
>>> My home network:
>>> FTTH modem (bridge) --- tp-link archer c7
>>> (pppoe+sqm+simple_pppoe(fq_codel)+ap) ---- (lan cable) --- tp-link
>>> archer c7 v2 with the experimental firmware(ap):
>>> Quick and dirty test:
>>> on non-patched openwrt wifi(wpa-psk):
>>> https://www.dslreports.com/speedtest/5028614
>>> on tp-link archer c7 v2 with toke's firmware(wpa-psk):
>>> https://www.dslreports.com/speedtest/5028349
>>> My brother said that "It feels like ethernet both in terms of
>>> throughput and latency". My brother is hammering the the tp-link
>>> archer c7 box with bittorrent, whatsapp, viber, and normal http.
>> Testing on my android smartphone (android 6.0.1):
>> Unpatched ap:
>> https://www.dslreports.com/speedtest/5028965
>> Patched ap:
>> https://www.dslreports.com/speedtest/5028940
>> On smartphones, it looks like you can get better throughput with
>> toke's firmware.
> Is this with other stations active? And how is the WiFi configured
> (HT20? HT40? 2.4Ghz or 5Ghz?). It's odd if the WiFi is the bottleneck at
> those speeds...

By stations, you mean other people connecting to that Access Point ?
Yes, right now, my brother is using bittorrent, whatsapp, viber,
facebook , and other apps.

dmesg shows that the selected algorithm is minstrel_ht.

At least 2 other people are going to switch to the new Access Point.

> -Toke

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