[LEDE-DEV] [PATCH] ath10k: Re-enable intermediate softqueues for all devices

[Jim Gettys]

On Tue, Sep 19, 2017 at 5:14 PM, Toke Høiland-Jørgensen <toke at toke.dk> wrote:
> Baptiste Jonglez <baptiste at bitsofnetworks.org> writes:
>
>> Hi,
>>
>> On 14-09-17, Toke Høiland-Jørgensen wrote:
>>> Toke Høiland-Jørgensen <toke at toke.dk> writes:
>>>
>>> > The upstream ath10k driver disables the intermediate softqueues for some
>>> > devices. This patch reverts that behaviour and always enables the
>>> > softqueues (and associated bufferbloat fixes). We have had reports of people
>>> > running this with good results:
>>> > https://lists.bufferbloat.net/pipermail/make-wifi-fast/2017-September/001497.html
>>>
>>> So there seems to be some issues with QCA9980 with this patch. See
>>> https://lists.bufferbloat.net/pipermail/make-wifi-fast/2017-September/001505.html
>>
>> I have updated my Archer C2600 to 53839da46e a few days ago (your patch
>> was just merged) and did not notice any particular performance issue.  The
>> Archer C2600 also has a QCA9980.
>
> Cool, thanks for testing! The other performance problems that were
> reported also seem to be fixed, so no need to revert the patch after all :)
>
> -Toke
>
Running stably for a day now on my Ubiquiti Unifi mesh AC router.
Latency is good.  As my laptop is antique and too lame to support AC
and only supports N, I can't say what the bandwidth performance is.

Here's some quick unscientific results.

Contrast this with my poor antique Intel based laptop's chips results.

I like two orders of magnitude improvement of latency under load!  Anyone have
suggestions on what to buy for a new laptop these days?

                                      - Jim
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