[Make-wifi-fast] TCP performance regression in mac80211 triggered by the fq code

Dave Taht dave.taht at gmail.com
Wed Jul 13 05:13:54 EDT 2016

On Wed, Jul 13, 2016 at 10:53 AM, Felix Fietkau <nbd at nbd.name> wrote:

>> To me this implies a contending lock issue, too much work in the irq
>> handler or too delayed work in the softirq handler....
>> I thought you were very brave to try and backport this.
> I don't think this has anything to do with contending locks, CPU
> utilization, etc. The code does something to the packets that TCP really
> doesn't like.

With your 70% idle figure, I am inclined to agree... could you get an aircap
of the two different tests?  - as well as a regular packetcap taken at
the client or server?
And put somewhere I can get at them?

What version of OSX are you running?

I will setup an ath9k box shortly...

Dave Täht
Let's go make home routers and wifi faster! With better software!

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