From: Jerome Brunet <jbrunet@baylibre.com>
To: Marc Gonzalez <marc.w.gonzalez@free.fr>,
linux-wireless@vger.kernel.org, MMC <linux-mmc@vger.kernel.org>,
AML <linux-amlogic@lists.infradead.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>,
Arend van Spriel <aspriel@gmail.com>,
Franky Lin <franky.lin@broadcom.com>,
Hante Meuleman <hante.meuleman@broadcom.com>,
Kalle Valo <kvalo@kernel.org>, Eric Dumazet <edumazet@google.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>,
Alexander Prutskov <alep@cypress.com>,
Joseph chuang <jiac@cypress.com>,
Kevin Hilman <khilman@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@gmail.com>,
Angus Ainslie <angus@akkea.ca>,
Heiner Kallweit <hkallweit1@gmail.com>,
Pierre-Hugues Husson <phh@phh.me>
Subject: Re: [Performance regression] BCM4359/9 on S905X2
Date: Tue, 21 Mar 2023 11:46:57 +0100 [thread overview]
Message-ID: <1jh6ue74x9.fsf@starbuckisacylon.baylibre.com> (raw)
In-Reply-To: <b9bd16cb-f1fa-34b7-d599-8637cbe5032b@free.fr>
On Tue 21 Mar 2023 at 11:40, Marc Gonzalez <marc.w.gonzalez@free.fr> wrote:
> Hello everyone,
>
> I've been benchmarking an Amlogic S905X2 board.
> It provides a BCM4359/9 WiFi chip connected through SDIO.
>
> There's a large performance gap between vendor kernel and mainline.
> (Downloading a 1GB file to /dev/null from a device inches away)
The title is misleading. You are comparing different sources. This is
not a regression. This is merely a difference.
If we are talking about mainline, then which board is it ? What is the
corresponding DT ? What is the MMC configuration in both case ? Have
you checked you are running with the same clock configuration to begin
with ?
>
> # curl -o /dev/null http://192.168.1.254:8095/fixed/1G
> % Total % Received % Xferd Average Speed Time Time Time Current
> Dload Upload Total Spent Left Speed
> 100 1024M 100 1024M 0 0 27.5M 0 0:00:37 0:00:37 --:--:-- 28.6M
> vs
> 100 1024M 100 1024M 0 0 11.0M 0 0:01:32 0:01:32 --:--:-- 11.0M
>
> Line 1 = vendor kernel (4.9.180 amlogic android)
This cannot help indentify a downstream kernel, and the infinite number
of forks and patches associated with it.
> Line 2 = mainline kernel (6.2.0-rc8)
>
> Why is the vendor kernel 2.5 times faster?
>
> (I'm using the same firmware files, but it seems the vendor kernel reads
> an additional configuration file that the mainline vendor seems to ignore.)
>
> Regards
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next prev parent reply other threads:[~2023-03-21 10:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-21 10:40 Marc Gonzalez
2023-03-21 10:46 ` Jerome Brunet [this message]
2023-03-21 12:37 ` Performance lower than expected with " Marc Gonzalez
2023-03-21 13:54 ` Jerome Brunet
2023-03-21 16:48 ` Marc Gonzalez
[not found] ` <EEE9FD80-C106-4A9B-AA8D-5C151E540CFD@hewittfamily.org.uk>
2023-04-04 16:09 ` [Performance regression] " Marc Gonzalez
2023-04-04 21:06 ` Martin Blumenstingl
2023-04-06 16:35 ` Marc Gonzalez
2023-04-06 17:07 ` Christian Hewitt
2023-04-06 17:41 ` Neil Armstrong
2023-04-17 14:22 ` Marc Gonzalez
2023-03-21 11:45 ` Neil Armstrong
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