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-Overview
-========
-
-Tested Topologies HW
---------------------
-
-CSIT VPP performance tests are executed on physical baremetal servers hosted by LF
-FD.io project. Testbed physical topology is shown in the figure below.
-
-::
-
-    +------------------------+           +------------------------+
-    |                        |           |                        |
-    |  +------------------+  |           |  +------------------+  |
-    |  |                  |  |           |  |                  |  |
-    |  |                  <----------------->                  |  |
-    |  |       DUT1       |  |           |  |       DUT2       |  |
-    |  +--^---------------+  |           |  +---------------^--+  |
-    |     |                  |           |                  |     |
-    |     |            SUT1  |           |  SUT2            |     |
-    +------------------------+           +------------------^-----+
-          |                                                 |
-          |                                                 |
-          |                  +-----------+                  |
-          |                  |           |                  |
-          +------------------>    TG     <------------------+
-                             |           |
-                             +-----------+
-
-SUT1 and SUT2 are two System Under Test servers (Cisco UCS C240, each with two
-Intel XEON CPUs), TG is a Traffic Generator (TG, another Cisco UCS C240, with
-two Intel XEON CPUs). SUTs run VPP SW application in Linux user-mode as a
-Device Under Test (DUT). TG runs TRex SW application as a packet Traffic
-Generator. Physical connectivity between SUTs and to TG is provided using
-different NIC models that need to be tested for performance. Currently
-installed and tested NIC models include:
-
-#. 2port10GE X520-DA2 Intel.
-#. 2port10GE X710 Intel.
-#. 2port10GE VIC1227 Cisco.
-#. 2port40GE VIC1385 Cisco.
-#. 2port40GE XL710 Intel.
-
-Detailed LF FD.io test bed specification and physical topology are described
-in `wiki CSIT LF testbed <https://wiki.fd.io/view/CSIT/CSIT_LF_testbed>`_.
-
-For test cases that require DUT (VPP) to communicate with VM over vhost-user
-interfaces, a VM is created on SUT1 and SUT2. DUT (VPP) test topology with VM
-is shown in the figure below including applicable packet flow thru the VM
-(marked in the figure with ``***``).
-
-::
-
-    +------------------------+           +------------------------+
-    |      +----------+      |           |      +----------+      |
-    |      |    VM    |      |           |      |    VM    |      |
-    |      |  ******  |      |           |      |  ******  |      |
-    |      +--^----^--+      |           |      +--^----^--+      |
-    |        *|    |*        |           |        *|    |*        |
-    |  +------v----v------+  |           |  +------v----v------+  |
-    |  |      *    *      |**|***********|**|      *    *      |  |
-    |  |  *****    *******<----------------->*******    *****  |  |
-    |  |  *    DUT1       |  |           |  |       DUT2    *  |  |
-    |  +--^---------------+  |           |  +---------------^--+  |
-    |    *|                  |           |                  |*    |
-    |    *|            SUT1  |           |  SUT2            |*    |
-    +------------------------+           +------------------^-----+
-         *|                                                 |*
-         *|                                                 |*
-         *|                  +-----------+                  |*
-         *|                  |           |                  |*
-         *+------------------>    TG     <------------------+*
-         ******************* |           |********************
-                             +-----------+
-
-Note that for VM tests, packets are switched by DUT (VPP) twice, hence the
-throughput rates measured by TG (and listed in this report) must be multiplied
-by two to represent the actual DUT aggregate packet forwarding rate.
-
-VPP Performance Tests Overview
-------------------------------
-
-Performance tests are split into the two main categories:
-
-- Throughput discovery - discovery of packet forwarding rate using binary search
-  in accordance to RFC2544.
-
-  - NDR - discovery of Non Drop Rate packet throughput, at zero packet loss;
-    followed by packet one-way latency measurements at 10%, 50% and 100% of
-    discovered NDR throughput.
-  - PDR - discovery of Partial Drop Rate, with specified non-zero packet loss
-    currently set to 0.5%; followed by packet one-way latency measurements at
-    100% of discovered PDR throughput.
-
-- Throughput verification - verification of packet forwarding rate against
-  previously discovered throughput rate. These tests are currently done against
-  0.9 of reference NDR, with reference rates updated periodically.
-
-CSIT |release| includes following performance test suites, listed per NIC type:
-
-- 2port10GE X520-DA2 Intel
-
-  - **L2XC** - L2 Cross-Connect switched-forwarding of untagged, dot1q, dot1ad
-    VLAN tagged Ethernet frames.
-  - **L2BD** - L2 Bridge-Domain switched-forwarding of untagged Ethernet frames
-    with MAC learning; disabled MAC learning i.e. static MAC tests to be added.
-  - **IPv4** - IPv4 routed-forwarding.
-  - **IPv6** - IPv6 routed-forwarding.
-  - **IPv4 Scale** - IPv4 routed-forwarding with 20k, 200k and 2M FIB entries.
-  - **IPv6 Scale** - IPv6 routed-forwarding with 20k, 200k and 2M FIB entries.
-  - **VM with vhost-user** - switching between NIC ports and VM over vhost-user
-    interfaces in different switching modes incl. L2 Cross-Connect, L2
-    Bridge-Domain, VXLAN with L2BD, IPv4 routed-forwarding.
-  - **COP** - IPv4 and IPv6 routed-forwarding with COP address security.
-  - **iACL** - IPv4 and IPv6 routed-forwarding with iACL address security.
-  - **LISP** - LISP overlay tunneling for IPv4-over-IPV4, IPv6-over-IPv4,
-    IPv6-over-IPv6, IPv4-over-IPv6 in IPv4 and IPv6 routed-forwarding modes.
-  - **VXLAN** - VXLAN overlay tunnelling integration with L2XC and L2BD.
-  - **QoS Policer** - ingress packet rate measuring, marking and limiting
-    (IPv4).
-
-- 2port40GE XL710 Intel
-
-  - **L2XC** - L2 Cross-Connect switched-forwarding of untagged Ethernet frames.
-  - **L2BD** - L2 Bridge-Domain switched-forwarding of untagged Ethernet frames
-    with MAC learning.
-  - **IPv4** - IPv4 routed-forwarding.
-  - **IPv6** - IPv6 routed-forwarding.
-  - **VM with vhost-user** - switching between NIC ports and VM over vhost-user
-    interfaces in different switching modes incl. L2 Bridge-Domain.
-
-- 2port10GE X710 Intel
-
-  - **L2BD** - L2 Bridge-Domain switched-forwarding of untagged Ethernet frames
-    with MAC learning.
-  - **VM with vhost-user** - switching between NIC ports and VM over vhost-user
-    interfaces in different switching modes incl. L2 Bridge-Domain.
-
-- 2port10GE VIC1227 Cisco
-
-  - **L2BD** - L2 Bridge-Domain switched-forwarding of untagged Ethernet frames
-    with MAC learning.
-
-- 2port40GE VIC1385 Cisco
-
-  - **L2BD** - L2 Bridge-Domain switched-forwarding of untagged Ethernet frames
-     with MAC learning.
-
-Execution of performance tests takes time, especially the throughput discovery
-tests. Due to limited HW testbed resources available within FD.io labs hosted
-by Linux Foundation, the number of tests for NICs other than X520 (a.k.a.
-Niantic) has been limited to few baseline tests. Over time we expect the HW
-testbed resources to grow, and will be adding complete set of performance
-tests for all models of hardware to be executed regularly and(or)
-continuously.
-