[dpdk-users] Performance issue in DPDK setup

[dpdk-users] Performance issue in DPDK setup

[Priyanka]

Hi All,

We have VMs on a physical server  with both VMs having 1 core 7 GB RAM 
with DPDK 16.04. The VMs are communicating using SR-IOV (per VM 1 VF is 
assigned). We are performance benchmarking the setup with our 
application which sends burst of packet on the sender VM and receiver VM 
receives it in a ring. But we are unable to get good performance at L2 
layer also. The problem we noticed is that if we attempt to send a burst 
of 1 lakh (1,00,000) packet at a go, the receiver side is able to 
receive only 40,000 packets. We feel there is some buffer overflow 
happening but we cannot trace it. So, we feel a uniform rate of sending 
packet and not a huge burst would be a better application for benchmarking.

Is there a application available in DPDK where we can specify the 
sending rate i.e. ask the application to send 1 Gbps traffic etc, so 
that it would send 1 Gb traffic uniformly in the second.
Please guide us on this.

Thanks,

Priyanka

Re: [dpdk-users] [dpdk-dev] Performance issue in DPDK setup

[Arnon Warshavsky]

> Is there a application available in DPDK where we can specify the sending
> rate i.e. ask the application to send 1 Gbps traffic etc, so that it would
> send 1 Gb traffic uniformly in the second.
> Please guide us on this.
>

Hi
The DPDK based Pkt-gen is doing a very good job for such uniform packet
blasting
http://dpdk.org/download
http://pktgen.readthedocs.io/en/latest/

/Arnon

Re: [dpdk-users] [dpdk-dev] Performance issue in DPDK setup

[Wiles, Keith]

> On Jan 19, 2017, at 1:42 AM, Arnon Warshavsky <arnon@qwilt.com> wrote:
> 
>> Is there a application available in DPDK where we can specify the sending
>> rate i.e. ask the application to send 1 Gbps traffic etc, so that it would
>> send 1 Gb traffic uniformly in the second.
>> Please guide us on this.
>> 
> 
> Hi
> The DPDK based Pkt-gen is doing a very good job for such uniform packet
> blasting

Thanks Arnon,

Just to be picky and not to be confused with the Lunix kernel pktgen the name for the DPDK version is call Pktgen-DPDK no dash in pktgen :-)

> http://dpdk.org/download
> http://pktgen.readthedocs.io/en/latest/
> 
> /Arnon

Regards,
Keith