bad throughput performance on multiple systems: Re: Fwd: Re: Disappointing packets-per-second performance results on a Dell,PE R530

[Navdeep Parhar]

On Fri, Mar 17, 2017 at 12:21 PM, John Jasen <jjasen at gmail.com> wrote:
> On 03/17/2017 06:08 AM, Slawa Olhovchenkov wrote:
>
>> On Thu, Mar 16, 2017 at 03:50:42PM -0400, John Jasen wrote:
>>
>>> As a few points of note, partial resolution, and curiosity:
>>>
>>> Following down leads that 11-STABLE had tryforward improvements over
>>> 11-RELENG, I upgraded. The same tests (24 client streams over UDP with
>>> small packets), the system went from passing 1.7m pps to about 2.5m.
>>>
>>> Following indications from Navdeep Parhar that UDP queue hashing is not as
>>> efficient as it could be, we started running the tests with various powers
>>> of 2 streams (2,4,8,16,32) -- and were able to push the system up to 5m pps.
>>>
>>> We are currently seeing in the tests approximately 10-11m pps on the
>>> outside interface, around 5-6m dropped, and 5 million passed.
>> You want more?
>
> Yes.
>
> We were hopeful, initially, to be able to achieve higher packet
> forwarding rates through either netmap-fwd or due to enhancements based
> off https://wiki.freebsd.org/ProjectsRoutingProposal

Have you tried netmap-fwd?  I'd be interested in how that did in your tests.

Sadly, projects/routing couldn't make it into 11.  I'm trying to find
out what's keeping it from getting merged into head.

Regards,
Navdeep