[dpdk-dev] Surprisingly high TCP ACK packets drop counter

[Alexander Belyakov]

Hello,

On Mon, Nov 4, 2013 at 7:06 AM, Prashant Upadhyaya <
prashant.upadhyaya at aricent.com> wrote:

> Hi Alexander,
>
> Please confirm if the patch works for you.
>

Disabling RSC (DPDK 1.3) indeed brings ACK flood forwarding performance to
14,5+ Mpps. No negative side affects were discovered so far, but we're
still testing.


>
> @Wang, are you saying that without the patch the NIC does not fan out the
> messages properly on all the receive queues ?
> So what exactly happens ?
>
>
Patch deals with RSC (receive side coalescing) but not RSS (receive side
scaling).


> Regards
> -Prashant
>
>
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Alexander Belyakov
> Sent: Monday, November 04, 2013 1:51 AM
> To: Wang, Shawn
> Cc: dev at dpdk.org
> Subject: Re: [dpdk-dev] Surprisingly high TCP ACK packets drop counter
>
> Hi,
>
> thanks for the patch and explanation. We have tried DPDK 1.3 and 1.5 -
> both have the same issue.
>
> Regards,
> Alexander
>
>