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From: Dave Taht <dave@taht.net>
To: Jan Ceuleers <jan.ceuleers@gmail.com>
Cc: Dave Taht <dave.taht@gmail.com>, Jonathan Morton <chromatix99@gmail.com>,
 bloat <bloat@lists.bufferbloat.net>
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Date: Sun, 26 Nov 2017 15:11:55 -0800
In-Reply-To: <ad112e0e-edb8-96dc-00b3-76bbd77d2c2b@gmail.com> (Jan Ceuleers's
 message of "Sun, 26 Nov 2017 19:43:41 +0100")
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Subject: Re: [Bloat] Steam In Home Streaming on ath9k wifi
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Jan Ceuleers <jan.ceuleers@gmail.com> writes:

> Resending with the from-address with which I'm subscribed to the list
>
> On 26/11/17 18:53, Dave Taht wrote:
>> On Sun, Nov 26, 2017 at 2:05 AM, Jonathan Morton <chromatix99@gmail.com> wrote:
>>> Another explanation for latency spikes on the order of 100ms is that a
>>> periodic (and wholly unnecessary) scan for other APs is run, which requires
>>> the wifi radio to be temporarily tuned away from the currently associated
>>> AP's frequency.
>> 
>> I'd written that up here:
>> 
>> http://blog.cerowrt.org/post/disabling_channel_scans/
>> 
>> Which was improved in some release of network manager
>> 
>> https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/373680
>
> Dave,
>
> Thanks, but that's not the same problem I experienced. Yours was
> entirely client-side (i.e. it was behaviour of Network Manager). My
> problem was due to the AP asking the client to periodically perform
> scans (by means of hostapd's obss_interval parameter).

Got it. Thanks!

>
> Similar (but not the same) symptoms - different cause.
>
> Jan
>
>
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