From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: Joshua Zhao <swzhao@gmail.com>, make-wifi-fast@lists.bufferbloat.net
Subject: Re: [Make-wifi-fast] tx queue stuck for many minutes
Date: Fri, 12 Apr 2019 11:18:35 +0200 [thread overview]
Message-ID: <878swfshsk.fsf@toke.dk> (raw)
In-Reply-To: <CAKmTU=opd0wLy6jWvQA37O4nHVxxUFdT79BGcdKVfpgYN4zf9w@mail.gmail.com>
Joshua Zhao <swzhao@gmail.com> writes:
> Hi,
> I run into a weird symptom that occasionally the aqm tx queue can get stuck
> for quite long time (maybe around 30min). What happened is that we're
> sending a low bandwidth UDP traffic from the host to multiple peers over a
> WiFi radio simultaneously. We're running opensource mac80211 + ath10k
> driver. Very occasionally when there are temporary issues causing trouble
> on the host sending to one of the peers, the queue to all peers can get
> stuck and stay stuck for quite long (even though the link trouble had been
> gone or TX had been stopped). Only after quite a while, then the queue
> cleans up.
This sorta sounds like a driver bug where the queue doesn't get
restarted after the issue is resolved? I'd suggest you email the ath10k
(ath10k@lists.infradead.org - maybe cc linux-wireless@vger.kernel.org
and this list) with a description of the issue that triggers this bug,
as well as system details (hardware model, firmware version and kernel
version).
-Toke
next prev parent reply other threads:[~2019-04-12 9:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-11 23:38 Joshua Zhao
2019-04-12 0:04 ` Joshua Zhao
2019-04-12 9:18 ` Toke Høiland-Jørgensen [this message]
2019-04-12 17:26 ` Joshua Zhao
2019-04-12 19:57 ` Toke Høiland-Jørgensen
2019-04-12 23:03 ` Joshua Zhao
2019-04-13 6:45 ` Toke Høiland-Jørgensen
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