From: "Valo, Kalle" <kvalo@qca.qualcomm.com>
To: "Manoharan, Rajkumar" <rmanohar@qti.qualcomm.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
"rmanohar@codeaurora.org" <rmanohar@codeaurora.org>,
"ath10k@lists.infradead.org" <ath10k@lists.infradead.org>
Subject: Re: ath10k: fix throughput regression in multi client mode
Date: Fri, 2 Sep 2016 16:30:26 +0000 [thread overview]
Message-ID: <87inuez2lb.fsf@kamboji.qca.qualcomm.com> (raw)
In-Reply-To: <425ad8d804bf46feada839a8e0d0c77e@euamsexm01a.eu.qualcomm.com> (Kalle Valo's message of "Wed, 31 Aug 2016 10:24:15 +0200")
Kalle Valo <kvalo@qca.qualcomm.com> writes:
> Rajkumar Manoharan <rmanohar@qti.qualcomm.com> wrote:
>> commit 7a0adc83f34d ("ath10k: improve tx scheduling") is causing
>> severe throughput drop in multi client mode. This issue is originally
>> reported in veriwave setup with 50 clients with TCP downlink traffic.
>> While increasing number of clients, the average throughput drops
>> gradually. With 50 clients, the combined peak throughput is decreased
>> to 98 Mbps whereas reverting given commit restored it to 550 Mbps.
>>
>> Processing txqs for every tx completion is causing overhead. Ideally for
>> management frame tx completion, pending txqs processing can be avoided.
>> The change partly reverts the commit "ath10k: improve tx scheduling".
>> Processing pending txqs after all skbs tx completion will yeild enough
>> room to burst tx frames.
>>
>> Fixes: 7a0adc83f34d ("ath10k: improve tx scheduling")
>> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
>
> I'm planning to queue this to 4.8 if no objections.
Actually the patch doesn't apply to ath-current branch so I'll apply to
ath-next instead.
--
Kalle Valo
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next prev parent reply other threads:[~2016-09-02 16:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-29 8:16 [PATCH] ath10k: fix throughput regression in multi client mode Rajkumar Manoharan
2016-08-31 8:24 ` Kalle Valo
2016-09-02 16:30 ` Valo, Kalle [this message]
2016-09-09 12:07 ` Kalle Valo
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