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From: Felix Fietkau <nbd@openwrt.org>
To: Andi Kleen <andi@firstfloor.org>
Cc: Larry Finger <Larry.Finger@lwfinger.net>,
	Michael Buesch <mb@bu3sch.de>,
	linux-wireless@vger.kernel.org,
	John Linville <linville@tuxdriver.com>
Subject: Re: rate instability in wireless stack
Date: Mon, 05 Jan 2009 14:32:21 +0100	[thread overview]
Message-ID: <49620BE5.9030507@openwrt.org> (raw)
In-Reply-To: <20090105054830.GJ496@one.firstfloor.org>

Andi Kleen wrote:
> Lots of zeroes.
> 
> -Andi
> 
> rate     throughput  ewma prob   this prob  this succ/attempt   success    attempts
> TtP  1         0.0        0.0        0.0          1(  0)          0           0
>      2         0.0        0.0        0.0          0(  0)          0           0
>      5.5       0.0        0.0        0.0          0(  0)          0           0
>     11         0.0        0.0        0.0          0(  0)          0           0
>      6         0.0        0.0        0.0          0(  0)          0           0
>      9         0.0        0.0        0.0          0(  0)          0           0
>     12         0.0        0.0        0.0          0(  0)          0           0
>     18         0.0        0.0        0.0          0(  0)          0           0
>     24         0.0        0.0        0.0          0(  0)          0           0
>     36         0.0        0.0        0.0          0(  0)          0           0
>     48         0.0        0.0        0.0          0(  0)          0           0
>     54         0.0        0.0        0.0          0(  0)          0           2
> 
> Total packet count::    ideal 46      lookaround 2
It looks like mac80211 is not getting proper feedback from the tx
status of the device. Is this with the patch that Larry suggested?
If so, please revert that patch and post an updated version of the
same stats.
The info->status.rates[0].count is supposed to contain the number of
tx attempts, not the number of retransmissions (at least that's what
minstrel expects).

- Felix

  parent reply	other threads:[~2009-01-05 13:32 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-04 16:46 rate instability in wireless stack Andi Kleen
2009-01-04 16:36 ` Michael Buesch
2009-01-04 17:41   ` Andi Kleen
2009-01-05  0:29     ` Larry Finger
2009-01-05  2:53       ` Andi Kleen
2009-01-05  3:55         ` Larry Finger
2009-01-05  5:02           ` Andi Kleen
2009-01-05  4:59             ` Larry Finger
2009-01-05  5:48               ` Andi Kleen
2009-01-05  5:51                 ` Larry Finger
2009-01-05  8:17                   ` Johannes Berg
2009-01-05 12:54                     ` Andi Kleen
2009-01-05 13:32                 ` Felix Fietkau [this message]
2009-01-05 14:23                   ` Andi Kleen
2009-01-05 14:41                     ` Felix Fietkau
2009-01-05 15:24                       ` Andi Kleen
2009-01-05 15:25                         ` Felix Fietkau
2009-01-05 16:35                           ` Andi Kleen
2009-01-05 16:36                             ` Felix Fietkau
2009-01-05 17:11                               ` Andi Kleen
2009-01-05 17:01                                 ` Felix Fietkau
2009-01-05 19:33                                   ` Hin-Tak Leung
2009-01-05 20:16                                     ` Larry Finger
2009-01-05  4:22         ` Larry Finger
  -- strict thread matches above, loose matches on Subject: below --
2009-01-07  6:46 Martín Ernesto Barreyro

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