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* [dpdk-users]  Strange Packet Loss with number of flows.
@ 2019-09-26  4:40 Dheeraj Dang
  2019-09-26  5:17 ` Stephen Hemminger
  0 siblings, 1 reply; 3+ messages in thread
From: Dheeraj Dang @ 2019-09-26  4:40 UTC (permalink / raw)
  To: users

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

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [dpdk-users] Strange Packet Loss with number of flows.
  2019-09-26  4:40 [dpdk-users] Strange Packet Loss with number of flows Dheeraj Dang
@ 2019-09-26  5:17 ` Stephen Hemminger
  2019-09-26  9:42   ` Dheeraj Dang
  0 siblings, 1 reply; 3+ messages in thread
From: Stephen Hemminger @ 2019-09-26  5:17 UTC (permalink / raw)
  To: Dheeraj Dang; +Cc: users

On Thu, 26 Sep 2019 10:10:25 +0530
Dheeraj Dang <dheerajdang138@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? 

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [dpdk-users] Strange Packet Loss with number of flows.
  2019-09-26  5:17 ` Stephen Hemminger
@ 2019-09-26  9:42   ` Dheeraj Dang
  0 siblings, 0 replies; 3+ messages in thread
From: Dheeraj Dang @ 2019-09-26  9:42 UTC (permalink / raw)
  To: Stephen Hemminger; +Cc: users

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@networkplumber.org> wrote:

> On Thu, 26 Sep 2019 10:10:25 +0530
> Dheeraj Dang <dheerajdang138@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?
>

^ permalink raw reply	[flat|nested] 3+ messages in thread

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2019-09-26  4:40 [dpdk-users] Strange Packet Loss with number of flows Dheeraj Dang
2019-09-26  5:17 ` Stephen Hemminger
2019-09-26  9:42   ` Dheeraj Dang

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