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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id b18-20020adff912000000b002c567881dbcsm10944294wrr.48.2023.03.21.03.52.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Mar 2023 03:52:02 -0700 (PDT) References: User-agent: mu4e 1.8.13; emacs 28.2 From: Jerome Brunet To: Marc Gonzalez , linux-wireless@vger.kernel.org, MMC , AML Cc: Neil Armstrong , Arend van Spriel , Franky Lin , Hante Meuleman , Kalle Valo , Eric Dumazet , Ulf Hansson , Pieter-Paul Giesberts , Alexander Prutskov , Joseph chuang , Kevin Hilman , Martin Blumenstingl , Angus Ainslie , Heiner Kallweit , Pierre-Hugues Husson Subject: Re: [Performance regression] BCM4359/9 on S905X2 Date: Tue, 21 Mar 2023 11:46:57 +0100 In-reply-to: Message-ID: <1jh6ue74x9.fsf@starbuckisacylon.baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230321_035207_841451_D77D89A8 X-CRM114-Status: GOOD ( 14.33 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On Tue 21 Mar 2023 at 11:40, Marc Gonzalez 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 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic