Multiple Loss Ratio Search for Packet Throughput (MLRsearch)
draft-vpolak-mkonstan-bmwg-mlrsearch-00

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Last updated 2018-11-13
Replaces draft-vpolak-mkonstan-mlrsearch
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Benchmarking Working Group                       M. Konstantynowicz, Ed.
Internet-Draft                                             V. Polak, Ed.
Intended status: Informational                             Cisco Systems
Expires: May 17, 2019                                  November 13, 2018

      Multiple Loss Ratio Search for Packet Throughput (MLRsearch)
                draft-vpolak-mkonstan-bmwg-mlrsearch-00

Abstract

   This document proposes changes to [RFC2544], specifically to packet
   throughput search methodology, by defining a new search algorithm
   referred to as Multiple Loss Ratio search (MLRsearch for short).
   Instead of relying on binary search with pre-set starting offered
   load, it proposes a novel approach discovering the starting point in
   the initial phase, and then searching for packet throughput based on
   defined packet loss ratio (PLR) input criteria and defined final
   trial duration time.  One of the key design principles behind
   MLSsearch is minimizing the total test duration and searching for
   multiple packet throughput rates (each with a corresponding PLR)
   concurrently, instead of doing it sequentially.

   The main motivation behind MLRsearch is the new set of challenges and
   requirements posed by NFV (Network Function Virtualization),
   specifically software based implementations of NFV data planes.
   Using [RFC2544] in the experience of the authors yields often not
   repetitive and not replicable end results due to a large number of
   factors that are out of scope for this draft.  MLRsearch aims to
   address this chalenge and define a common (standard?) way to evaluate
   NFV packet throughput performance that takes into account varying
   characteristics of NFV systems under test.

Status of This Memo

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   This Internet-Draft will expire on May 17, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  MLRsearch Background  . . . . . . . . . . . . . . . . . . . .   3
   3.  MLRsearch Overview  . . . . . . . . . . . . . . . . . . . . .   3
   4.  Sample Implementation . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Input Parameters  . . . . . . . . . . . . . . . . . . . .   6
     4.2.  Initial phase . . . . . . . . . . . . . . . . . . . . . .   6
     4.3.  Non-initial phases  . . . . . . . . . . . . . . . . . . .   7
   5.  Known Implementations . . . . . . . . . . . . . . . . . . . .   8
     5.1.  FD.io CSIT Implementation Deviations  . . . . . . . . . .   9
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  Normative References  . . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  10

1.  Terminology

   o  NDR - Non-Drop Rate, a packet throughput metric with Packet Loss
      Ratio equal zero (a zero packet loss), expressed in packets-per-
      second (pps).  NDR packet throughput has an associated metric
      oftentimes referred to as NDR bandwidth expressed in bits-per-
      second (bps), and calculated as a product of:

      *  NDR packet rate for specific packet (frame) size, and

      *  Packet (L2 frame size) size in bits plus any associated L1
         overhead.

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