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Re: brcmfmac experiment for a specific use case - tx throughput maximization for slow CPU with glomming

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Hi Fabio,

On Fri, 2017-08-18 at 08:50 -0300, Fabio Estevam wrote:
> Hi Jörg,
> 
> On Thu, Jun 1, 2017 at 3:37 AM, Jörg Krause <joerg.krause@embedded.rocks> wrote:
> 
> > I'm experiencing low throughput with a BCM43362 wifi chip attached via
> > SDIO to an i.MX28 [1,2]. After disabling some Kernel debug features I'm
> > getting now a TCP throughput of 12.5 Mbps for the wifi interface, which
> > is still below the throughput I get for the Cubietruck.
> 
> Does it help if you disable CONFIG_PROVE_LOCKING?

No, it does not. I've disabled all settings in "Lock Debugging", but
the TCP throughput is still at ~12.5 Mpbs.

> --- a/arch/arm/configs/mxs_defconfig
> +++ b/arch/arm/configs/mxs_defconfig
> @@ -175,7 +175,6 @@ CONFIG_MAGIC_SYSRQ=y
>  CONFIG_DEBUG_KERNEL=y
>  CONFIG_LOCKUP_DETECTOR=y
>  CONFIG_TIMER_STATS=y
> -CONFIG_PROVE_LOCKING=y
>  CONFIG_BLK_DEV_IO_TRACE=y
>  CONFIG_STRICT_DEVMEM=y
>  CONFIG_DEBUG_USER=y




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