[dpdk-users] Strange Packet Loss with number of flows.

[Dheeraj Dang]

I'm running dpdk test cases on Ubuntu 16.04 VM. xstats are not
available inside VM.
Following are the version of DPDK in Guest OS
*DPDK version : 17.08*
We are using *OVS version 2.6.1 *and *Intel Corporation Ethernet 10G 2P
X520 Adapter card.*

On Thu, Sep 26, 2019 at 10:47 AM Stephen Hemminger <
stephen at networkplumber.org> wrote:

> On Thu, 26 Sep 2019 10:10:25 +0530
> Dheeraj Dang <dheerajdang138 at gmail.com> wrote:
>
> > Hi,
> >
> > I am having a problem with packet loss and I hope you can help me out.
> > When we increase the number of flows, PPM value must increase. I observed
> > this behavior to some point, but after that PPM value reduces. Below you
> > find the description of application, workload, and observations.
> >
> > *Application*
> > I have a server-client application, a single server, and single client.
> > Both machines are using multiple queues to send or receive packets.
> >
> >
> > *Workload*
> > I'm running dpdk with fixed PPS value i.e 2 Mpps.
> > I'm increasing the number of flows to see the impact on PPM value.
> > I'm changing UDP port range to generate the number of flows.
> >
> >
> > *Observations*
> > Target MPPS Flows PPM
> > 2 2 100
> > 2 100 670
> > 2 1000 3136
> > 2 5000 265878
> > 2 10000 106316
> > *I was expecting PPM value to rise for 10K flows, but its value reduces.*
> > Please share your suggestions.
> >
> > Regards
> > Dheeraj Dang
>
> What DPDK version? What OS? What hardware?
> Did you look at xstats in DPDK?
>