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SubjectRe: [PATCH net-next v2 3/7] net: mvneta: increase number of buffers in RX and TX queue
On Fri, Jul 13, 2018 at 06:18:37PM +0200, Gregory CLEMENT wrote:
> From: Yelena Krivosheev <yelena@marvell.com>
>
> The initial values were too small leading to poor performance when using
> the software buffer management.

What does this do to latency when a large transfer is also ongoing
(iow, the classic bufferbloat issue) ?

>
> Signed-off-by: Yelena Krivosheev <yelena@marvell.com>
> [gregory: extract from a larger patch]
> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
> ---
> drivers/net/ethernet/marvell/mvneta.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
> index f4e3943a745d..c22df28b07c8 100644
> --- a/drivers/net/ethernet/marvell/mvneta.c
> +++ b/drivers/net/ethernet/marvell/mvneta.c
> @@ -295,10 +295,10 @@
> #define MVNETA_RSS_LU_TABLE_SIZE 1
>
> /* Max number of Rx descriptors */
> -#define MVNETA_MAX_RXD 128
> +#define MVNETA_MAX_RXD 512
>
> /* Max number of Tx descriptors */
> -#define MVNETA_MAX_TXD 532
> +#define MVNETA_MAX_TXD 1024
>
> /* Max number of allowed TCP segments for software TSO */
> #define MVNETA_MAX_TSO_SEGS 100
> --
> 2.18.0
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

--
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