[dpdk-users] [pktgen] pktgen Tx/Rx rates are not the same in loopback testing case

[Wiles, Keith]

> On Jul 26, 2017, at 4:02 AM, Paul Tsvika <mozloverinweb at gmail.com> wrote:
> 
> Hi Keith.
> 
> This is a loopback test and I think it somehow affects the performance since there is only one NIC and phy on the mother board.
> 
> I tried two mother boards and the tx/rx ( 9611/9497 ) rates look more reasonable.
> 
> I can also set packet size in pktgen command line. 

If Pktgen performance is OK in other motherboards, then the problem with this machine is most likely not a Pktgen problem. You did not answer my question about the PCIe slots in my previous email.

> 
> However, I still don't understand why  RX Desc 512, TX Desc 1024 are not the same.
> 
> Should the values suppose to be the same ?

The increased TX ring size is to reduce the number of times a TX done cleanup occurs.

> 
> 
> 
> Regards-
> 
> 
> P.T
> 
>  

Regards,
Keith