Re: [vpp-committers] [vpp-dev] VPP committers: VPP PTL vote

[Alec via lists.fd.io]

+1
Thanks Damjan for stepping up 


From:  on behalf of Edward Warnicke 
Date: Friday, September 25, 2020 at 12:54 PM
To: Dave Wallace 
Cc: "Dave Barach (dbarach)" , "vpp-committ...@lists.fd.io" 
, "vpp-dev@lists.fd.io" 
Subject: Re: [vpp-committers] [vpp-dev] VPP committers: VPP PTL vote

+1

On Fri, Sep 25, 2020 at 2:44 PM Dave Wallace 
mailto:dwallac...@gmail.com>> wrote:
+1

On 9/25/20 3:13 PM, Dave Barach via lists.fd.io wrote:
Folks,

The self-nomination period closed yesterday. We had one self-nomination, from 
Damjan Marion. At this point, we can proceed with a vote.

I’m sure that Damjan will do a great job, so let me start:

Damjan Marion as VPP PTL: +1

Please vote +1, 0, -1. For once, the “reply-all” button is everyone’s friend.

Thanks... Dave



-Original Message-
From: d...@barachs.net 

Sent: Thursday, September 17, 2020 10:32 AM
To: 'vpp-dev@lists.fd.io' 
; 
't...@lists.fd.io' 

Subject: Happy Trails to Me...



Folks,



I’m departing the employment rolls towards the end of next month. Although I 
intend to remain active in the fd.io vpp community as a coder, 
committer, and resident greybeard, it’s time for the community to pick a new 
PTL.



According to the project governance document, 
https://fd.io/docs/tsc/FD.IO-Technical-Community-Document-12-12-2017.pdf:



3.2.3.1 Project Technical Leader Candidates Candidates for the project’s PTL 
will be derived from the Committers of the Project. Candidates must 
self-nominate.



I'd like to invite any interested vpp project committer to self-nominate for 
the PTL role. Please email vpp-dev@lists.fd.io.



Let's close the self-nomination period in one week: more specifically, by 5pm 
EDT on Thursday, September 24, 2020; committer vote to follow thereafter.



I'll be glad to answer unicast questions about the PTL role from eligible 
committers.



Thanks... Dave

















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Re: [vpp-dev] Parallel test execution in VPP Test Framework

[Alec via Lists.Fd.Io]

Hi Juraj,
How many instances and what level of performance are you looking at?
Even if you assign different cores to each VPP instance, results can be skewed 
due to interference at the LLC and PCIe/NIC level (this can be somewhat 
mitigated by running on separate sockets)

   Alec


From:  on behalf of Juraj Linkeš 

Date: Friday, July 27, 2018 at 7:25 AM
To: "Maciek Konstantynowicz (mkonstan)" 
Cc: "vpp-dev@lists.fd.io" , csit-dev 
Subject: Re: [vpp-dev] Parallel test execution in VPP Test Framework

Hi Maciek and vpp-devs,

I've run into a significant problem regarding VPP assignment to cores. All VPPs 
that are spawned are assigned to core 1. I looked at 
https://wiki.fd.io/view/VPP/Command-line_Arguments and I guess it's because 
that's the default behavior of VPP (dpdk coremask is not configured and  Note 
that the "main" thread always occupies the lowest core-id specified in the DPDK 
[process-level] coremask.").

Is my reading of the config options accurate?

Obviously, all VPP instances running on the same core goes against running the 
tests on multiple cores. There are a couple of solutions that come to mind:

· Assign VPP instances to cores manually. With possible multiple jobs 
running on a given host, this creates a situation where the different jobs 
don't know cores are already occupied (and by how many VPP instances) and thus 
introduces additional challenges to solve.

· Add an option to override this default behavior and let the Linux CFS 
scheduler assign VPPs to cores or something similar where VPPs would land on 
different cores.

Is there some other solution?

Vpp-devs, what do you think about the second solution? What it be possible?

Thanks,
Juraj

From: Maciek Konstantynowicz (mkonstan) [mailto:mkons...@cisco.com]
Sent: Wednesday, July 25, 2018 1:10 PM
To: Juraj Linkeš 
Cc: vpp-dev@lists.fd.io; csit-dev 
Subject: Re: [vpp-dev] Parallel test execution in VPP Test Framework





On 19 Jul 2018, at 15:44, Juraj Linkeš 
mailto:juraj.lin...@pantheon.tech>> wrote:

Hi VPP devs,

I'm implementing parallel test execution of tests in VPP Test Framework (the 
patch is here https://gerrit.fd.io/r/#/c/13491/) and the last big outstanding 
question is how scalable the parallelization actually is.

That’s a good question. What do the tests say? :)



The tests are spawning one VPP instance per each VPPTestCase class

How many VPP instances are spawned and run in parallel? Cause assuming
there is at least one VPPTestCase class per test_, that’s 70 VPP
instances ..




and the question is - how do the required compute resources per each VPP 
instance (cpu, ram, shm) scale and how much resources do we need with 
increasing number of VPP instances running in parallel (in the context of VPP 
Test Framework tests)?

I guess this will vary between tests too. FIB scale tests will require
more fib heap memory. What do the tests say? :)

-Maciek




The second question would be a generic "is there anything else I need to be 
aware of when trying to run VPPs in parallel?".

Thanks,
Juraj
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