[ovs-dev] [PATCH] INSTALL.DPDK.md: Correct mergeable buffers parameter.

Flavio Leitner fbl at sysclose.org
Fri Feb 12 01:47:28 UTC 2016


On Wed, 10 Feb 2016 10:50:54 +0000
Ian Stokes <ian.stokes at intel.com> wrote:

> Update the mergeable buffers paramaters in performance tuning
> to the correct parameter mrg_rxbuf.
> 
> Signed-off-by: Ian Stokes <ian.stokes at intel.com>
> ---
>  INSTALL.DPDK.md |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md
> index d892788..0f340e5 100644
> --- a/INSTALL.DPDK.md
> +++ b/INSTALL.DPDK.md
> @@ -392,7 +392,7 @@ Performance Tuning:
>  	This behavior is typically supported and enabled by default, however
>  	in the case where the user knows that rx mergeable buffers are not needed
>  	i.e. jumbo frames are not needed, it can be forced off by adding
> -	rx_mrgbuf=off to the QEMU command line options. By not reserving multiple
> +	mrg_rxbuf=off to the QEMU command line options. By not reserving multiple
>  	chains of descriptors it will make more individual virtio descriptors
>  	available for rx to the guest using dpdkvhost ports and this can improve
>  	performance.

$ qemu-system-x86_64 -device virtio-net-pci,help 2>&1 | grep mrg
virtio-net-pci.mrg_rxbuf=bool (on/off)

Acked-by: Flavio Leitner <fbl at sysclose.org>

-- 
fbl




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