.. Copyright (c) <2010-2017>, Intel Corporation All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of Intel Corporation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ================= Niantic PMD Tests ================= This document provides benchmark tests for the userland Intel® 82599 Gigabit Ethernet Controller (Niantic) Poll Mode Driver (PMD). The userland PMD application runs the ``IO forwarding mode`` test described in the PMD test plan document with different parameters for the configuration of Niantic NIC ports. The core configuration description is: - 1C/1T: 1 Physical Core, 1 Logical Core per physical core (1 Hyperthread) using core #2 (socket 0, 2nd physical core) - 1C/2T: 1 Physical Core, 2 Logical Cores per physical core (2 Hyperthreads) using core #2 and #14 (socket 0, 2nd physical core, 2 Hyperthreads) - 2C/1T: 2 Physical Cores, 1 Logical Core per physical core using core #2 and #4 (socket 0, 2nd and 3rd physical cores) Prerequisites ============= Each of the 10Gb Ethernet* ports of the DUT is directly connected in full-duplex to a different port of the peer traffic generator. Using interactive commands, the traffic generator can be configured to send and receive in parallel, on a given set of ports. The tool ``vtbwrun`` (included in Intel® VTune™ Performance Analyzer) will be used to monitor memory activities while running network benchmarks to check the number of ``Memory Partial Writes`` and the distribution of memory accesses among available Memory Channels. This will only be done on the userland application, as the tool requires a Linux environment to be running in order to be used. If using vfio the kernel must be >= 3.6+ and VT-d must be enabled in bios.When using vfio, use the following commands to to load the vfio driver and bind it to the device under test:: modprobe vfio modprobe vfio-pci usertools/dpdk-devbind.py --bind=vfio-pci device_bus_id Test Case: Packet Checking ========================== The linuxapp is started with the following parameters: :: -c 0xffffff -n 3 -- -i --coremask=0x4 \ --rxd=512 --txd=512 --burst=32 --txfreet=32 --rxfreet=64 --mbcache=128 --portmask=0xffff \ --rxpt=4 --rxht=4 --rxwt=16 --txpt=36 --txht=0 --txwt=0 --txrst=32 The tester sends packets with different sizes (64, 65, 128, 256, 512, 1024, 1280 and 1518 bytes), using scapy, which will be forwarded by the DUT. The test checks if the packets are correctly forwarded and if both RX and TX packet sizes match. Test Case: Descriptors Checking =============================== The linuxapp is started with the following parameters: :: -c 0xffffff -n 3 -- -i --coremask=0x4 \ --rxd={rxd} --txd={txd} --burst=32 --rxfreet=64 --mbcache=128 \ --portmask=0xffff --txpt=36 --txht=0 --txwt=0 --txfreet=32 --txrst=32 IXIA sends packets with different sizes (64, 65, 128, 256, 512, 1024, 1280 and 1518 bytes) for different values of rxd and txd (between 128 and 4096) The packets will be forwarded by the DUT. The test checks if the packets are correctly forwarded. Test Case: Performance Benchmarking =================================== The linuxapp is started with the following parameters, for each of the configurations referenced above: 1C/1T:: -c 0xffffff -n 3 -- -i --coremask=0x4 \ --rxd=512 --txd=512 --burst=32 --txfreet=32 --rxfreet=64 --mbcache=128 --portmask=0xffff \ --rxpt=4 --rxht=4 --rxwt=16 --txpt=36 --txht=0 --txwt=0 --txrst=32 1C/2T:: -c 0xffffff -n 3 -- -i --coremask=0x4004 \ --rxd=512 --txd=512 --burst=32 --txfreet=32 --rxfreet=64 --mbcache=128 --portmask=0xffff \ --rxpt=4 --rxht=4 --rxwt=16 --txpt=36 --txht=0 --txwt=0 --txrst=32 2C/1T:: -c 0xffffff -n 3 -- -i --coremask=0x14 \ --rxd=512 --txd=512 --burst=32 --txfreet=32 --rxfreet=64 --mbcache=128 --portmask=0xffff \ --rxpt=4 --rxht=4 --rxwt=16 --txpt=36 --txht=0 --txwt=0 --txrst=32 The throughput is measured for each of these cases for the packet size of 64, 65, 128, 256, 512, 1024, 1280 and 1518 bytes. The results are printed in the following table: +-------+---------+---------+---------+-----------+ | Frame | 1C/1T | 1C/2T | 2C/1 | wirespeed | | Size | | | | | +-------+---------+---------+---------+-----------+ | 64 | | | | | +-------+---------+---------+---------+-----------+ | 65 | | | | | +-------+---------+---------+---------+-----------+ | 128 | | | | | +-------+---------+---------+---------+-----------+ | 256 | | | | | +-------+---------+---------+---------+-----------+ | 512 | | | | | +-------+---------+---------+---------+-----------+ | 1024 | | | | | +-------+---------+---------+---------+-----------+ | 1280 | | | | | +-------+---------+---------+---------+-----------+ | 1518 | | | | | +-------+---------+---------+---------+-----------+ The memory partial writes are measured with the ``vtbwrun`` application and printed in the following table::: Sampling Duration: 000000.00 micro-seconds --- Logical Processor 0 ---||--- Logical Processor 1 --- ---------------------------------------||--------------------------------------- --- Intersocket QPI Utilization ---||--- Intersocket QPI Utilization --- ---------------------------------------||--------------------------------------- --- Reads (MB/s): 0.00 ---||--- Reads (MB/s): 0.00 --- --- Writes(MB/s): 0.00 ---||--- Writes(MB/s): 0.00 --- ---------------------------------------||--------------------------------------- --- Memory Performance Monitoring ---||--- Memory Performance Monitoring --- ---------------------------------------||--------------------------------------- --- Mem Ch 0: #Ptl Wr: 0000.00 ---||--- Mem Ch 0: #Ptl Wr: 0.00 --- --- Mem Ch 1: #Ptl Wr: 0000.00 ---||--- Mem Ch 1: Ptl Wr (MB/s): 0.00 --- --- Mem Ch 2: #Ptl Wr: 0000.00 ---||--- Mem Ch 2: #Ptl Wr: 0.00 --- --- ND0 Mem #Ptl Wr: 0000.00 ---||--- ND1 #Ptl Wr: 0.00 ---