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 15:41:58 +0100 [thread overview]
Message-ID: <49621C36.70602@openwrt.org> (raw)
In-Reply-To: <20090105142343.GS496@one.firstfloor.org>
Andi Kleen wrote:
> With Larry's patch reverted. Rate is still at 1Mbit/s of course.
> This is all only with rtl8180, I didn't try everything on the realtek
> card too.
>
> -Andi
>
> rate throughput ewma prob this prob this succ/attempt success attempts
> TtP 1 0.9 99.2 100.0 1( 1) 23 32
> 2 0.0 0.0 0.0 0( 0) 0 0
> 5.5 0.0 0.0 0.0 0( 0) 0 1
> 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 0
>
> Total packet count:: ideal 25 lookaround 1
OK, that confirms that Larry's patch was wrong - at least the dump
looks consistent now.
Probably the RT2561 and the RTL8180 simply have a lower Tx power and
thus can't get the signal through the walls as easily as the zd1211rw.
If you still think that it's a rate control problem, please try all
the rates individually and see if one of them works better.
- Felix
next prev parent reply other threads:[~2009-01-05 14:42 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
2009-01-05 14:23 ` Andi Kleen
2009-01-05 14:41 ` Felix Fietkau [this message]
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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