netdev - Re: [PATCH] ibm_newemac: Increase number of default rx-/tx-buffers

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Message-Id: <1199528388.7291.55.camel@pasglop>
Date:	Sat, 05 Jan 2008 21:19:48 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Stefan Roese <sr@...x.de>
Cc:	netdev@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH] ibm_newemac: Increase number of default rx-/tx-buffers


On Sat, 2008-01-05 at 10:50 +0100, Stefan Roese wrote:
> Performance tests done by AMCC have shown that 256 buffer increase the
> performance of the Linux EMAC driver. So let's update the default
> values to match this setup.
> 
> Signed-off-by: Stefan Roese <sr@...x.de>
> ---

Do we have the numbers ? Did they also measure latency ?

Ben.

>  drivers/net/ibm_newemac/Kconfig |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ibm_newemac/Kconfig b/drivers/net/ibm_newemac/Kconfig
> index 0d3e738..5a06727 100644
> --- a/drivers/net/ibm_newemac/Kconfig
> +++ b/drivers/net/ibm_newemac/Kconfig
> @@ -9,12 +9,12 @@ config IBM_NEW_EMAC
>  config IBM_NEW_EMAC_RXB
>  	int "Number of receive buffers"
>  	depends on IBM_NEW_EMAC
> -	default "128"
> +	default "256"
>  
>  config IBM_NEW_EMAC_TXB
>  	int "Number of transmit buffers"
>  	depends on IBM_NEW_EMAC
> -	default "64"
> +	default "256"
>  
>  config IBM_NEW_EMAC_POLL_WEIGHT
>  	int "MAL NAPI polling weight"

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