From: Felix Fietkau <nbd@openwrt.org>
To: Karl Beldan <karl.beldan@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>,
linux-wireless <linux-wireless@vger.kernel.org>,
Karl Beldan <karl.beldan@rivierawaves.com>
Subject: Re: [PATCH] mac80211: use capped prob when computing throughputs
Date: Wed, 20 Nov 2013 18:37:29 +0100 [thread overview]
Message-ID: <528CF359.9000900@openwrt.org> (raw)
In-Reply-To: <20131120170444.GF9335@magnum.frso.rivierawaves.com>
On 2013-11-20 18:04, Karl Beldan wrote:
> On Wed, Nov 20, 2013 at 05:57:06PM +0100, Felix Fietkau wrote:
>> On 2013-11-20 08:32, Felix Fietkau wrote:
>> > On 2013-11-20 01:51, Karl Beldan wrote:
>> >> From: Karl Beldan <karl.beldan@rivierawaves.com>
>> >>
>> >> Commit 3e8b1eb "mac80211/minstrel_ht: improve rate selection stability"
>> >> introduced a local capped prob in minstrel_ht_calc_tp but omitted to use
>> >> it to compute the rate throughput.
>> >>
>> >> Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
>> >> CC: Felix Fietkau <nbd@openwrt.org>
>> > Nice catch!
>> > Acked-by: Felix Fietkau <nbd@openwrt.org>
>> Sorry, I need to revoke that ACK - there's a bug in this patch:
>>
>> > - tp = 1000000 * ((mr->probability * 1000) / nsecs);
>> > + tp = 1000000 * (prob * 1000) / nsecs;
>> Removing the outer () is wrong, it leads to overflow that makes all
>> throughput values 0.
>>
> Do you handle this one or I resend ?
Please resend.
- Felix
prev parent reply other threads:[~2013-11-20 17:37 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 0:51 [PATCH] mac80211: use capped prob when computing throughputs Karl Beldan
2013-11-20 7:32 ` Felix Fietkau
2013-11-20 13:56 ` Karl Beldan
2013-11-20 14:04 ` Felix Fietkau
2013-11-20 14:50 ` Karl Beldan
2013-11-20 15:49 ` Felix Fietkau
2013-11-20 16:19 ` Karl Beldan
2013-11-20 17:32 ` Felix Fietkau
2013-11-20 17:53 ` Karl Beldan
2013-11-20 18:24 ` Felix Fietkau
2013-11-20 16:57 ` Felix Fietkau
2013-11-20 17:03 ` Karl Beldan
2013-11-20 17:04 ` Karl Beldan
2013-11-20 17:37 ` Felix Fietkau [this message]
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