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

[John Jasen]

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