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From: "Manoharan, Rajkumar" <rmanohar@qti.qualcomm.com>
To: Roman Yeryomin <leroi.lists@gmail.com>
Cc: "ath10k@lists.infradead.org" <ath10k@lists.infradead.org>
Subject: Re: [PATCH v2 0/7] ath10k: add copy engine fast path support
Date: Sun, 31 Jan 2016 14:23:12 +0000	[thread overview]
Message-ID: <1454250192327.17956@qti.qualcomm.com> (raw)
In-Reply-To: <CACiydbLk5=EH8Nz=FnL+B3itfXiRLbLUARg4ovWe7okLsZzyRQ@mail.gmail.com>

>On 31 January 2016 at 08:31, Manoharan, Rajkumar
><rmanohar@qti.qualcomm.com> wrote:
>>>> Below patchset adds fast path support for uplink traffic by bypassing
>>>> HTC layer processing. This is enabled by making use of unused copy
>>>> engine 5 to receive HTT messages directly from HIF layer. From initial
>>>> validation in VHT80/5G mode TCP UL is improved to 900Mbps from ~840Mbps
>>>> in conducted test.
>>>>
>>>
>>>Hi Rajkumar,
>>>
>>>I'm very curious what hardware did you use to do the tests?
>>>Because with Dragonfly+Peregrine 3x3 I'm able to get only ~550Mbps :(
>>>
>>
>> Roman,
>>
>> It is verified in AP148 platform which IPQ8064 (1.4GHz dual core) platform.
>> Throughput will be lower in low end systems like AP135 (unicore processor).
>
> OK, but QSDK built with proprietary driver can reach 800Mbps at least.
> 900/800 Mbps difference is fine (ethernet software bridging is >900,
> e.g.) but 900/550 Mbps difference is not fine, there must be something
> ath10k is not doing or doing in a wrong way.

While ago, Michal did an experiments to improve performance by offloading
encap/decap to firmware. Can you try with below patch set? I hope there might
be some conflicts since the change is outdated. Please make sure to enable
CONFIG_ATH10K_802_3_FORMAT switch.

http://lists.infradead.org/pipermail/ath10k/2014-December/003935.html

In one of my experiments, replacing netif_receive_skb to netif_rx in mac80211/rx.c
had improved rx performance in AP135. I dont have data right now. Can you give a try?

-Rajkumar
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  reply	other threads:[~2016-01-31 14:23 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-12 12:56 [PATCH v2 0/7] ath10k: add copy engine fast path support Rajkumar Manoharan
2015-10-12 12:57 ` [PATCH v2 1/7] ath10k: export htc tx rx handlers Rajkumar Manoharan
2015-10-12 12:57 ` [PATCH v2 2/7] ath10k: register per copy engine send completion callbacks Rajkumar Manoharan
2015-10-12 12:57 ` [PATCH v2 3/7] ath10k: register per copy engine receive callbacks Rajkumar Manoharan
2015-10-12 12:57 ` [PATCH v2 4/7] ath10k: export htt tx rx handlers Rajkumar Manoharan
2015-10-12 12:57 ` [PATCH v2 5/7] ath10k: Configure copy engine 5 for HTT messages Rajkumar Manoharan
2015-10-12 12:57 ` [PATCH v2 6/7] ath10k: remove unused dl_is_polled Rajkumar Manoharan
2015-10-12 12:57 ` [PATCH v2 7/7] ath10k: remove htc polling for tx completion Rajkumar Manoharan
2015-10-16 12:51 ` [PATCH v2 0/7] ath10k: add copy engine fast path support Kalle Valo
     [not found] ` <CACiydbLcjNGdpc+dtBFCTAUrC0RtEhtxoxf3+XhXk24soX_qQg@mail.gmail.com>
2016-01-31  6:31   ` Manoharan, Rajkumar
2016-01-31 12:41     ` Roman Yeryomin
2016-01-31 14:23       ` Manoharan, Rajkumar [this message]
2016-01-31 17:20         ` Roman Yeryomin
2016-02-01  9:54         ` Roman Yeryomin
2016-02-01 12:35           ` Roman Yeryomin
2016-02-04 17:53             ` Roman Yeryomin

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