Re: [bmwg] Throughput definition discussions - volunteers needed

"Vratko Polak -X (vrpolak - PANTHEON TECH SRO at Cisco)" <vrpolak@cisco.com> Mon, 15 March 2021 14:42 UTC

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From: "Vratko Polak -X (vrpolak - PANTHEON TECH SRO at Cisco)" <vrpolak@cisco.com>
To: "bmwg@ietf.org" <bmwg@ietf.org>
Thread-Topic: [bmwg] Throughput definition discussions - volunteers needed
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Date: Mon, 15 Mar 2021 14:42:53 +0000
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Subject: Re: [bmwg] Throughput definition discussions - volunteers needed
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> Let me know if you are interested

I am interested.

I think we already mentioned (during the meeting)
the need to distinguish allowed vs rejected traffic and packets vs bits.
RFC 2647 also mentions traffic orientation and goodput.
I think (for future proofing) we should think also about situations
when the amount of data going in differs from the amount of data coming out
(e.g encapsulation/decapsulation, encryption/decryption, compression/decompression).

> RFC 1242, 3.17 – Throughput

That is defined as a load with some additional properties.
This assumes constant load [0] in packets per second.
Stateful traffic often leads to non-constant loads,
affecting different layers differently.
I think we first need to update or replace intended load [2] (and offered load),
and base the "application throughput" on that.

Finally, I repeat my earlier comment: Counters examined during the traffic
cannot distinguish an in-flight "transaction" from a failed one.

Vratko.

[0] https://tools.ietf.org/html/rfc1242#section-3.4
[1] https://tools.ietf.org/html/rfc2285#section-3.5.1

From: bmwg <bmwg-bounces@ietf.org> On Behalf Of bmonkman@netsecopen.org
Sent: Friday, 2021-March-12 17:39
To: bmwg@ietf.org
Subject: [bmwg] Throughput definition discussions - volunteers needed

Folks,

The NGFW performance draft (https://tools.ietf.org/html/draft-ietf-bmwg-ngfw-performance-06) was reviewed in the virtual BMWG meeting yesterday. One item that proved to be a bit interesting  the discussion was around the definition of “Throughput” in section 6.3. We used what we thought was appropriate wording from RFC 2647, section 3.4 – Bit Forwarding Rate. The concern raised was specifically our use of the word Throughput. There was general consensus from the BMWG that this was confusing and for clarity sake we should use something else as the accepted BMWG definition of Throughput was defined well in RFC 1242, 3.17 – Throughput.  This discussion devolved into a circular one. It was suggested that some folks from NetSecOPEN and some folks from the BMWG get together on a call to come up with proposed wording that would be acceptable to everyone. I am looking for a few people from here to volunteer. Please let me know if you are interested.

Maciek Konstantynowicz and Al Morton have already volunteered.  The plan is to setup a call with the BMWG volunteers and a small number from NetSecOPEN to discuss. Our goal is to reach consensus on suitable wording that we can bring back to the group.

Let me know if you are interested and I will reach out to discuss timing.

Brian


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Brian Monkman
Executive Director, NetSecOPEN
Office: +1-717-610-0808
Fax: +1-717-506-0460
Mobile: +1-717-462-5422

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