From: David Lang <david@lang.hm>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: "Toke Høiland-Jørgensen" <toke@toke.dk>,
make-wifi-fast@lists.bufferbloat.net,
linux-wireless@vger.kernel.org
Subject: Re: [Make-wifi-fast] [RFC] mac80211: Add airtime fairness accounting
Date: Mon, 9 Oct 2017 00:50:20 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.02.1710090047220.7677@nftneq.ynat.uz> (raw)
In-Reply-To: <1507533328.26041.12.camel@sipsolutions.net>
[-- Attachment #1: Type: TEXT/PLAIN, Size: 968 bytes --]
On Mon, 9 Oct 2017, Johannes Berg wrote:
> On Sat, 2017-10-07 at 13:22 +0200, Toke Høiland-Jørgensen wrote:
>
>> Guess you are right that it will be difficult to get a completely
>> accurate number. But as David Lang notes, as long as we are off by
>> the same amount for all stations, that is fine - we're just
>> interested in relative numbers.
>
> That's not quite true though, you'd overestimate most on stations that
> are using aggregation, assuming you take into account the whole frame
> exchange sequence time. But maybe giving less than their fair share to
> fast stations isn't really that much of a problem.
how much error does this introduce?
Compared to the stations using 802.11b, this is a trivial difference.
That's why I said perfect is the enemy of good enough. Yes, it would be ideal to
get the airtime from the driver, but if the driver doesn't provide it, I think
ignoring aggregation in the name of simplicity is 'good enough'
David Lang
next prev parent reply other threads:[~2017-10-09 7:50 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-06 11:52 Toke Høiland-Jørgensen
2017-10-06 14:07 ` Johannes Berg
2017-10-06 14:18 ` Jonathan Morton
2017-10-06 17:12 ` Johannes Berg
2017-10-06 14:29 ` Toke Høiland-Jørgensen
2017-10-06 17:18 ` Johannes Berg
2017-10-06 22:40 ` David Lang
2017-10-07 11:22 ` Toke Høiland-Jørgensen
2017-10-09 7:15 ` Johannes Berg
2017-10-09 7:50 ` David Lang [this message]
2017-10-09 9:42 ` Toke Høiland-Jørgensen
2017-10-09 11:40 ` Johannes Berg
2017-10-09 12:38 ` Toke Høiland-Jørgensen
2017-10-09 18:50 ` Johannes Berg
2017-10-09 20:25 ` Toke Høiland-Jørgensen
2017-10-11 8:55 ` Johannes Berg
2017-10-11 13:50 ` Toke Høiland-Jørgensen
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