From: Sujith <m.sujith@gmail.com>
To: Daniel Halperin <dhalperi@cs.washington.edu>
Cc: linux-wireless@vger.kernel.org
Subject: bug: 2 second wireless stall on ath9k link
Date: Thu, 5 May 2011 07:20:37 +0530 [thread overview]
Message-ID: <19906.621.413439.414030@gargle.gargle.HOWL> (raw)
In-Reply-To: <19906.158.278401.536454@gargle.gargle.HOWL>
Sujith wrote:
> Daniel Halperin wrote:
> > Hi,
> >
> > I have two identical Dell Inspiron 530n desktops running latest w-t
> > (07e789c5094735747b3df8a7840f61467575ba9e, master 2011-05-04) on
> > Ubuntu 10.04.2 LTS. I have uninstalled network-manager from both
> > devices and, as far as I can tell, no software processes or daemons
> > interfere with my wireless configurations.
> >
> > The AP machine has an AR9280-based device and an IWL5300 based device.
> > I blacklist ath9k and iwlagn modules from loading on boot. It is
> > running latest hostap.git, though I've seen the same issue with older
> > versions.
> >
> > The client machine has one AR9380-based NIC, one IWL5300-based NIC,
> > and one RT2800pci NIC. I blacklist ath9k, iwlagn, and rt2800pci from
> > loading on boot.
> >
> > When I set up the client to connect (using iwconfig essid) to the AP
> > (no encryption, channel 48 with HT40-) and run iperf, I sometimes see
> > 2-second drops of the connection. I run iperf to generate elastic TCP
> > flows that see ~150 Mbps, and in parallel I run ping <AP> -i 0.2.
> > Here's the ping log:
>
> Your timing couldn't be better. :)
> https://patchwork.kernel.org/patch/753862/
Hm, is ath9k in AP mode ?
That fix is meant primarily for station mode.
Disabling ANI would be useful to narrow down the issue.
(Since long calibration is every 30 seconds).
Sujith
next prev parent reply other threads:[~2011-05-05 1:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-04 23:42 bug: 2 second wireless stall on ath9k link Daniel Halperin
2011-05-05 0:06 ` Daniel Halperin
2011-05-05 1:42 ` Sujith
2011-05-05 1:50 ` Sujith [this message]
2011-05-05 2:05 ` Daniel Halperin
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