From: Wang Yinan Signed-off-by: Wang Yinan --- ...power_managerment_throughput_test_plan.rst | 74 +++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 test_plans/power_managerment_throughput_test_plan.rst diff --git a/test_plans/power_managerment_throughput_test_plan.rst b/test_plans/power_managerment_throughput_test_plan.rst new file mode 100644 index 0000000..a9234be --- /dev/null +++ b/test_plans/power_managerment_throughput_test_plan.rst @@ -0,0 +1,74 @@ +.. Copyright (c) <2019>, 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. + +====================================== +Power managerment throughput test plan +====================================== + +This test plan test cpu frequence changed according io workloads with l3fwd-power sample. +The cpu frequency status depends on NIC and CPU type. + +Prerequisites +============= + +1. Update Grub:: + + Add "intel_pstate=disable" in kernel options. + +2. BIOS configuration as below:: + + CPU mode : "Power" + Workload configuratuion："IO sensitive" + Hardware Power : "Disabled" + Speedstep : "Enabled" + Turbo : "Enabled" + C-stats：C0/C1 + C6 : "Enabled" + +Test Case1: Check the CPU frequency can change according differernt packet speed +================================================================================ + +1. Check that you are using the "acpi-cpufreq" driver by command "cpufreq-info". + +2. CPU frequency controlled by userspace by command "cpupower frequency-set -g userspace". + +3. Bind one nic port to igb_uio, launch l3fwd-power sample, one core used for one port:: + + ./l3fwd-power -c 0xc000000 -n 4 -- -P -p 0x01 --config '(0,0,27)' + +4. Send packets by packet generator with high speed, check the used cpu frequency is almost 100%:: + + cat /sys/devices/system/cpu/cpu27/cpufreq/cpuinfo_cur_freq + +5. Send packets by packet generator with low speed, the CPU frequency will reduce about 50%:: + + cat /sys/devices/system/cpu/cpu27/cpufreq/cpuinfo_cur_freq \ No newline at end of file -- 2.17.1