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From: Larry Finger <Larry.Finger@lwfinger.net>
To: Andi Kleen <andi@firstfloor.org>
Cc: Michael Buesch <mb@bu3sch.de>,
	linux-wireless@vger.kernel.org,
	John Linville <linville@tuxdriver.com>
Subject: Re: rate instability in wireless stack
Date: Sun, 04 Jan 2009 21:55:03 -0600	[thread overview]
Message-ID: <49618497.50809@lwfinger.net> (raw)
In-Reply-To: <20090105025302.GF496@one.firstfloor.org>

Andi Kleen wrote:
> 
> Same issue with this patch. It fluctuates some time between 11Mbit/s
> and 48Mbit/s, but then eventually settles on 1Mbit/s again. That's with PID
> now, not Mistrel. I think it takes longer with this patch than
> before, but not much.
> 
> BTW I see the problem with RT2561 too.

Can you retry with mistrel? In my experience, it converges to a lower rate than
does pid, but it doesn't fluctuate as much.

I'll look into RT2561.

What I generally do is start a ping in one window and enter the following line
in another:

while [ 1 ] ; do iwconfig wlan0 | grep Mb ; sleep 1 ; done

and watch the rate.

Larry


  reply	other threads:[~2009-01-05  3:55 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 [this message]
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
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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