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| -rwxr-xr-x | test_spec/ietf_summary/draft-vsperf-bmwg-vswitch-opnfv-00.xml | 554 | ||||
| -rw-r--r-- | test_spec/vswitchperf_ltd.md | 78 |
2 files changed, 595 insertions, 37 deletions
diff --git a/test_spec/ietf_summary/draft-vsperf-bmwg-vswitch-opnfv-00.xml b/test_spec/ietf_summary/draft-vsperf-bmwg-vswitch-opnfv-00.xml new file mode 100755 index 00000000..e4057410 --- /dev/null +++ b/test_spec/ietf_summary/draft-vsperf-bmwg-vswitch-opnfv-00.xml @@ -0,0 +1,554 @@ +<?xml version="1.0" encoding="US-ASCII"?> +<!DOCTYPE rfc SYSTEM "rfc2629.dtd"> +<?rfc toc="yes"?> +<?rfc tocompact="yes"?> +<?rfc tocdepth="3"?> +<?rfc tocindent="yes"?> +<?rfc symrefs="yes"?> +<?rfc sortrefs="yes"?> +<?rfc comments="yes"?> +<?rfc inline="yes"?> +<?rfc compact="yes"?> +<?rfc subcompact="no"?> +<rfc category="info" docName="draft-vsperf-bmwg-vswitch-opnfv-00" + ipr="trust200902"> + <front> + <title abbrev="Benchmarking vSwitches">Benchmarking Virtual Switches in + OPNFV</title> + + <author fullname="Maryam Tahhan" initials="M." surname="Tahhan"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email/> + + <uri/> + </address> + </author> + + <author fullname="Billy O Mahony" initials="B." surname="O Mahony"> + <organization>Intel</organization> + + <address> + <postal> + <street/> + + <city/> + + <region/> + + <code/> + + <country/> + </postal> + + <phone/> + + <facsimile/> + + <email/> + + <uri/> + </address> + </author> + + <author fullname="Al Morton" initials="A." surname="Morton"> + <organization>AT&T Labs</organization> + + <address> + <postal> + <street>200 Laurel Avenue South</street> + + <city>Middletown,</city> + + <region>NJ</region> + + <code>07748</code> + + <country>USA</country> + </postal> + + <phone>+1 732 420 1571</phone> + + <facsimile>+1 732 368 1192</facsimile> + + <email>acmorton@att.com</email> + + <uri>http://home.comcast.net/~acmacm/</uri> + </address> + </author> + + <date day="6" month="June" year="2015"/> + + <abstract> + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance "VSWITCHPERF". This project + intends to build on the current and completed work of the Benchmarking + Methodology Working Group in IETF, by referencing existing literature. + The Benchmarking Methodology Working Group has traditionally conducted + laboratory characterization of dedicated physical implementations of + internetworking functions. Therefore, this memo begins to describes the + additional considerations when virtual switches are implemented in + general-purpose hardware. The expanded tests and benchmarks are also + influenced by the OPNFV mission to support virtualization of the "telco" + infrastructure.</t> + </abstract> + + <note title="Requirements Language"> + <t>The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", + "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this + document are to be interpreted as described in <xref + target="RFC2119">RFC 2119</xref>.</t> + + <t/> + </note> + </front> + + <middle> + <section title="Introduction"> + <t>Benchmarking Methodology Working Group (BMWG) has traditionally + conducted laboratory characterization of dedicated physical + implementations of internetworking functions. The Black-box Benchmarks + of Throughput, Latency, Forwarding Rates and others have served our + industry for many years. Now, Network Function Virtualization (NFV) has + the goal to transform how internetwork functions are implemented, and + therefore has garnered much attention.</t> + + <t>This memo describes the progress of the Open Platform for NFV (OPNFV) + project on virtual switch performance characterization, "VSWITCHPERF". + This project intends to build on the current and completed work of the + Benchmarking Methodology Working Group in IETF, by referencing existing + literature. For example, currently the most referenced RFC is <xref + target="RFC2544"/> (which depens on <xref target="RFC1242"/>) and + foundation of the benchmarking work in OPNFV is common and strong.</t> + + <t>See + https://wiki.opnfv.org/characterize_vswitch_performance_for_telco_nfv_use_cases + for more background, and the OPNFV website for general information: + https://www.opnfv.org/</t> + + <t>The authors note that OPNFV distinguishes itself from other open + source compute and networking projects through its emphasis on existing + "telco" services as opposed to cloud-computing. There are many ways in + which telco requirements have different emhasis on performance + dimensions when compared to cloud computing: support for and transfer of + isochronous media streams is one example.</t> + + <t>Note also that the move to NFV Infrastructure has resulted in many + new benchmarking initiatives across the industry, and the authors are + currently doing their best to maintain alignment with many other + projects, and this Internet Draft is evidence of the efforts.</t> + </section> + + <section title="Scope"> + <t>The primary purpose and scope of the memo is to inform BMWG of + work-in-progress that builds on the body of extensive literature and + experience. Additionally, once the initial information conveyed here is + received, this memo may be expanded to include more detail and + commentary from both BMWG and OPNFV communities, under BMWG's chartered + work to characterize the NFV Infrastructure (a virtual switch is an + important aspect of that infrastructure).</t> + </section> + + <section title="Benchmarking Considerations"> + <t>This section highlights some specific considerations (from <xref + target="ID.ietf-bmwg-virtual-net"/>)related to Benchmarks for virtual + switches.</t> + + <section title="Comparison with Physical Network Functions"> + <t>To compare the performance of virtual designs and implementations + with their physical counterparts, identical benchmarks are needed. + BMWG has developed specifications for many network functions this memo + re-uses existing benchmarks through references, and expands them + during development of new methods. A key configuration aspect is the + number of parallel cores required to achieve comparable performance + with a given physical device, or whether some limit of scale was + reached before the cores could achieve the comparable level. </t> + + <t>It's unlikely that the virtual switch will be the only application + running on the SUT, so CPU utilization, Cache utilization, and Memory + footprint should also be recorded for the virtual implementations of + internetworking functions.</t> + </section> + + <section title="Continued Emphasis on Black-Box Benchmarks"> + <t>External observations remain essential as the basis for Benchmarks. + Internal observations with fixed specification and interpretation will + be provided in parallel to assist the development of operations + procedures when the technology is deployed. </t> + </section> + </section> + + <section title="VSWITCHPERF Specification Summary"> + <t>The overall specification in preparation is referred to as a Level + Test Design (LTD) document, which will contain a suite of performace + tests.</t> + + <t>As one might expect, the most fundamental internetworking + characteristics of Throughput and Latency remain important when the + switch is virtualized, and these benchmarks figure prominently in the + specification.</t> + + <t>When considering characteristics important to "telco" network + functions, we must begin to consider additional performance metrics. In + this case, the project specifications have referenced metrics from the + IETF IP Performance Metrics (IPPM) literature. This means that the <xref + target="RFC2544"/> test of Latency is replaced by measurement of a + metric derived from IPPM's <xref target="RFC2679"/>, where a set of + statistical summaries will be provided (mean, max, min, etc.). Further + metrics planned to be benchmarked include packet delay variation as + defined by <xref target="RFC5481"/> , reordering, burst behaviour, DUT + availability, DUT capacity and packet loss in long term testing at + Throughput level, where some low-level of background loss may be present + and characterized.</t> + + <t>Tests have been (or will be) designed to collect the metrics + below:</t> + + <t><list style="symbols"> + <t>Throughput Tests to measure the maximum forwarding rate (in + frames per second or fps) and bit rate (in Mbps) for a constant load + (as defined by RFC1242) without traffic loss.</t> + + <t>Packet and Frame Delay Distribution Tests to measure average, min + and max packet and frame delay for constant loads.</t> + + <t>Packet Delay Tests to understand latency distribution for + different packet sizes and over an extended test run to uncover + outliers.</t> + + <t>Scalability Tests to understand how the virtual switch performs + as the number of flows, active ports, complexity of the forwarding + logic’s configuration… it has to deal with + increases.</t> + + <t>Stream Performance Tests (TCP, UDP) to measure bulk data transfer + performance, i.e. how fast systems can send and receive data through + the switch.</t> + + <t>Request/Response Performance Tests (TCP, UDP) the measure the + transaction rate through the switch.</t> + + <t>Control Path and Datapath Coupling Tests, to understand how + closely coupled the datapath and the control path are as well as the + effect of this coupling on the performance of the DUT (example: + delay of the initial packet of a flow).</t> + + <t>Noisy Neighbour Tests, to understand the effects of resource + sharing on the performance of a virtual switch.</t> + + <t>CPU and Memory Consumption Tests to understand the virtual + switch’s footprint on the system, usually conducted as + auxilliary measurements with benchmarks above. They include: CPU + utilization, Cache utilization and Memory footprint.</t> + </list></t> + + <t>The felixability of deployemnt of a virtual switch within a network + means that the BMWG IETF existing literature needs to be used to + characterize the performance of a switch in various deployment + scenarios. The deployment scenarios under consideration include:</t> + + <t><figure> + <preamble>Physical port to virtual switch to physical + port</preamble> + + <artwork><![CDATA[ __ + +--------------------------------------------------+ | + | +--------------------+ | | + | | | | | + | | v | | Host + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure></t> + + <t><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ : | | + | | | | | Guest + | : v | | + | +---------------+ +---------------+ | | + | | logical port 0| | logical port 1| | | + +---+---------------+-----------+---------------+---+ __| + ^ : + | | + : v __ + +---+---------------+----------+---------------+---+ | + | | logical port 0| | logical port 1| | | + | +---------------+ +---------------+ | | + | ^ : | | + | | | | | Host + | : v | | + | +--------------+ +--------------+ | | + | | phy port | vSwitch | phy port | | | + +---+--------------+------------+--------------+---+ __| + ^ : + | | + : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF to virtual switch + to VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+__| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | L-----------------+ v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+_| + ^ : ^ : + | | | | + : v : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>Physical port to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | ^ | | + | | | | Guest + | : | | + | +---------------+ | | + | | logical port 0| | | + +---+---------------+-------------------------------+ __| + ^ + | + : __ + +---+---------------+------------------------------+ | + | | logical port 0| | | + | +---------------+ | | + | ^ | | + | | | | Host + | : | | + | +--------------+ | | + | | phy port | vSwitch | | + +---+--------------+------------ -------------- ---+ __| + ^ + | + : + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble>VNF to virtual switch to physical port</preamble> + + <artwork><![CDATA[ __ + +---------------------------------------------------+ | + | | | + | +-------------------------------------------+ | | + | | Application | | | + | +-------------------------------------------+ | | + | : | | + | | | | Guest + | v | | + | +---------------+ | | + | | logical port | | | + +-------------------------------+---------------+---+ __| + : + | + v __ + +------------------------------+---------------+---+ | + | | logical port | | | + | +---------------+ | | + | : | | + | | | | Host + | v | | + | +--------------+ | | + | vSwitch | phy port | | | + +-------------------------------+--------------+---+ __| + : + | + v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+]]></artwork> + </figure><figure> + <preamble> VNF to virtual switch to VNF</preamble> + + <artwork><![CDATA[ __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | | | | ^ | | + | v | | | | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 | | | | 0 | | | + +---+---------------+--+ +---+---------------+--+__| + : ^ + | | + v : _ + +---+---------------+---------+---------------+--+ | + | | 1 | | 1 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | | ^ | | Host + | L-----------------+ | | + | | | + | vSwitch | | + +------------------------------------------------+_| + +]]></artwork> + </figure></t> + </section> + + <section title="Security Considerations"> + <t>Benchmarking activities as described in this memo are limited to + technology characterization of a Device Under Test/System Under Test + (DUT/SUT) using controlled stimuli in a laboratory environment, with + dedicated address space and the constraints specified in the sections + above.</t> + + <t>The benchmarking network topology will be an independent test setup + and MUST NOT be connected to devices that may forward the test traffic + into a production network, or misroute traffic to the test management + network.</t> + + <t>Further, benchmarking is performed on a "black-box" basis, relying + solely on measurements observable external to the DUT/SUT.</t> + + <t>Special capabilities SHOULD NOT exist in the DUT/SUT specifically for + benchmarking purposes. Any implications for network security arising + from the DUT/SUT SHOULD be identical in the lab and in production + networks.</t> + </section> + + <section anchor="IANA" title="IANA Considerations"> + <t>No IANA Action is requested at this time.</t> + </section> + + <section title="Acknowledgements"> + <t>The authors acknowledge</t> + </section> + </middle> + + <back> + <references title="Normative References"> + <?rfc ?> + + <?rfc include="reference.RFC.2119"?> + + <?rfc include="reference.RFC.2330"?> + + <?rfc include='reference.RFC.2544'?> + + <?rfc include="reference.RFC.2679"?> + + <?rfc include='reference.RFC.2680'?> + + <?rfc include='reference.RFC.3393'?> + + <?rfc include='reference.RFC.3432'?> + + <?rfc include='reference.RFC.2681'?> + + <?rfc include='reference.RFC.5905'?> + + <?rfc include='reference.RFC.4689'?> + + <?rfc include='reference.RFC.4737'?> + + <?rfc include='reference.RFC.5357'?> + + <reference anchor="NFV.PER001"> + <front> + <title>Network Function Virtualization: Performance and Portability + Best Practices</title> + + <author fullname="ETSI NFV" initials="" surname=""> + <organization/> + </author> + + <date month="June" year="2014"/> + </front> + + <seriesInfo name="Group Specification" + value="ETSI GS NFV-PER 001 V1.1.1 (2014-06)"/> + + <format type="PDF"/> + </reference> + </references> + + <references title="Informative References"> + <?rfc include='reference.RFC.1242'?> + + <?rfc include='reference.RFC.5481'?> + + <?rfc include='reference.RFC.6049'?> + + <?rfc include='reference.RFC.6248'?> + + <?rfc include='reference.RFC.6390'?> + + <?rfc include='reference.ID.ietf-bmwg-virtual-net'?> + </references> + </back> +</rfc> diff --git a/test_spec/vswitchperf_ltd.md b/test_spec/vswitchperf_ltd.md index 98b82d90..7fbd2cc2 100644 --- a/test_spec/vswitchperf_ltd.md +++ b/test_spec/vswitchperf_ltd.md @@ -166,38 +166,40 @@ The following represents possible deployments which can help to determine the pe - Physical port → virtual switch → VNF → virtual switch → VNF → virtual switch → physical port. <pre><code> - __ - +---------------------------------------------------+ +---------------------------------------------------+ | - | Guest 1 | | Guest 2 | | - | +-------------------------------------------+ | | +-------------------------------------------+ | | - | | Application | | | | Application | | | - | +-------------------------------------------+ | | +-------------------------------------------+ | | - | ^ : | | ^ : | | - | | | | | | | | | Guest - | : v | | : v | | - | +---------------+ +---------------+ | | +---------------+ +---------------+ | | - | | logical port 0| | logical port 1| | | | logical port 0| | logical port 1| | | - +---+---------------+-----------+---------------+---+ +---+---------------+-----------+---------------+---+__| - ^ : ^ : - | | | | - : v : v __ - +---+---------------+----------+---------------+------------+---------------+-----------+---------------+---+ | - | | port 0 | | port 1 | | port 2 | | port 3 | | | - | +---------------+ +---------------+ +---------------+ +---------------+ | | - | ^ : ^ : | | - | | | | | | | Host - | : +--------------------+ v | | - | +--------------+ +--------------+ | | - | | phy port | vswitch | phy port | | | - +---+--------------+--------------------------------------------------------------------+--------------+----+__| - ^ : - | | - : v - +-----------------------------------------------------------------------------------------------------------+ - | | - | traffic generator | - | | - +-----------------------------------------------------------------------------------------------------------+ + + __ + +----------------------+ +----------------------+ | + | Guest 1 | | Guest 2 | | + | +---------------+ | | +---------------+ | | + | | Application | | | | Application | | | + | +---------------+ | | +---------------+ | | + | ^ | | | ^ | | | + | | v | | | v | | Guests + | +---------------+ | | +---------------+ | | + | | logical ports | | | | logical ports | | | + | | 0 1 | | | | 0 1 | | | + +---+---------------+--+ +---+---------------+--+__| + ^ : ^ : + | | | | + : v : v _ + +---+---------------+---------+---------------+--+ | + | | 0 1 | | 3 4 | | | + | | logical ports | | logical ports | | | + | +---------------+ +---------------+ | | + | ^ | ^ | | | Host + | | L-----------------+ v | | + | +--------------+ +--------------+ | | + | | phy ports | vSwitch | phy ports | | | + +---+--------------+----------+--------------+---+_| + ^ : ^ : + | | | | + : v : v + +--------------------------------------------------+ + | | + | traffic generator | + | | + +--------------------------------------------------+ + </code></pre> - Physical port → virtual switch → VNF. @@ -565,17 +567,17 @@ The following represents possible deployments which can help to determine the pe - #####Test ID: LTD.Throughput.RFC2544.SystemRecoveryTime **Title**: RFC 2544 System Recovery Time Test - **Prerequisite Test**: N\A + **Prerequisite Test** LTD.Throughput.RFC2544.PacketLossRatio **Priority**: **Description**: - The aim of this test is to determine the length of time it takes the DUT to recover from an overload condition for a constant load (fixed length frames at a fixed interval time). The selected frame sizes are those previously defined under [Default Test Parameters](#DefaultParams), traffic should be sent to the DUT under normal conditions. During the duration of the test and while the traffic flows are passing though the DUT, at least one situation leading to an overload condition for the DUT should occur. The time from the start of the overload condition to when the DUT returns to normal operations should be measured to determine recovery time. Prior to overloading the DUT, one should record the average latency for 100 packets forwarded through the DUT. + The aim of this test is to determine the length of time it takes the DUT to recover from an overload condition for a constant load (fixed length frames at a fixed interval time). The selected frame sizes are those previously defined under [Default Test Parameters](#DefaultParams), traffic should be sent to the DUT under normal conditions. During the duration of the test and while the traffic flows are passing though the DUT, at least one situation leading to an overload condition for the DUT should occur. The time from the end of the overload condition to when the DUT returns to normal operations should be measured to determine recovery time. Prior to overloading the DUT, one should record the average latency for 10,000 packets forwarded through the DUT. - The suggested overload condition would be to transmit traffic at a very high frame rate to the DUT, for at least 60 seconds, then reduce the frame rate to the DUT by half; A number of time-stamps should be recorded: - - Record the time-stamp at which the frame rate was halved and record a second time-stamp at the time of the last frame lost. The recovery time is the difference between the two timestamps. - - Record the average Latency for 100 frames after the last frame loss and continue to record average latency measurements for every 100 frames, when latency returns to pre-overload levels record the time-stamp. + The overload condition SHOULD be to transmit traffic at a very high frame rate to the DUT (150% of the maximum 0% packet loss rate as determined by LTD.Throughput.RFC2544.PacketLossRatio or line-rate whichever is lower), for at least 60 seconds, then reduce the frame rate to 75% of the maximum 0% packet loss rate. A number of time-stamps should be recorded: + - Record the time-stamp at which the frame rate was reduced and record a second time-stamp at the time of the last frame lost. The recovery time is the difference between the two timestamps. + - Record the average latency for 10,000 frames after the last frame loss and continue to record average latency measurements for every 10,000 frames, when latency returns to within 10% of pre-overload levels record the time-stamp. **Expected Result**: @@ -643,6 +645,7 @@ The following represents possible deployments which can help to determine the pe - Any outliers in the Throughput stability. - Any unexpected variation in Throughput stability. - CPU and memory utilization may also be collected as part of this test, to determine the vSwitch's performance footprint on the system. + - The [RFC5481] PDV form of delay variation on the traffic flow, using the 99th percentile. <br/> @@ -684,6 +687,7 @@ The following represents possible deployments which can help to determine the pe - Any outliers in the Throughput stability. - Any unexpected variation in Throughput stability. - CPU and memory utilization may also be collected as part of this test, to determine the vSwitch's performance footprint on the system. + - The [RFC5481] PDV form of delay variation on the traffic flow, using the 99th percentile. <br/> |