Signed-off-by: Lijuan Tu --- test_plans/multiple_pthread_test_plan.rst | 151 ++++++++++++++++++++++++++++++ 1 file changed, 151 insertions(+) create mode 100644 test_plans/multiple_pthread_test_plan.rst diff --git a/test_plans/multiple_pthread_test_plan.rst b/test_plans/multiple_pthread_test_plan.rst new file mode 100644 index 0000000..4de4643 --- /dev/null +++ b/test_plans/multiple_pthread_test_plan.rst @@ -0,0 +1,151 @@ +.. Copyright (c) < 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. + +===================== +Multiple Pthread Test +===================== + + +Description +----------- + +This test is a basic multiple pthread test which demonstrates the basics +of control group. Cgroup is a Linux kernel feature that limits, accounts +for and isolates the resource usage, like CPU, memory, disk I/O, network, +etc of a collection of processes. Now, it's focus on the CPU usage. + +Prerequisites +------------- +Support igb_uio driver, kernel is 3.11+. +Use "modeprobe uio" "modprobe igb_uio" and then +use "./tools/dpdk_nic_bind.py --bind=igb_uio device_bus_id" to bind the ports. + +Assuming that an Intel� DPDK build has been set up and the testpmd +applications have been built. + +Os required: Linux and FreeBSD + +Test Case 1: Basic operation +---------------------------- + +To run the application, start the testpmd with the lcoress all running with +threads and also the unique core assigned, command as follows:: + + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='0@8,(4-5)@9' -n 4 -- -i --portmask=0xc + EAL: Master lcore 0 is ready (tid=ffd4900;cpuset=[8]) + EAL: lcore 4 is ready (tid=873e7700;cpuset=[9]) + EAL: lcore 5 is ready (tid=873e7700;cpuset=[9]) + +To check the output, we shall make sure the lcore are init on the correct cpu. +e.g. Duing INIT log we can found below: + +The process should start successfully and display a command prompt as follows:: + + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='0@8,(4-5)@9' -n 4 -- -i --portmask=0xc + Checking link statuses... + Port 0 Link Up - speed 10000 Mbps - full-duplex + Port 1 Link Up - speed 10000 Mbps - full-duplex + Done + +Start the packet forwarding as follows:: + + testpmd>set fwd mac + +Before running the test, make sure the core is a unique one otherwise, +the throughput will be floating on different cores, +another thing is to make sure all the logic cores are running, command as follows:: + + testpmd>set corelist 4,5 + +Pay attention that set corelist need to be configured before start, +otherwise, it will not work:: + + testpmd>start + testpmd>show config fwd + +Using the command to find the threads that's running, as follows:: + + ps -C testpmd -L -opid,tid,%cpu,psr,args + +Result as follows: + + PID TID %CPU PSR COMMAND + 179459 179459 0.2 8 ./x86_64-native-linuxapp-gcc/app/testpmd --lcores=0 at 8,(4-5)@9 -n 4 -- -i --portmask=0xc + 179459 179460 0.0 21 ./x86_64-native-linuxapp-gcc/app/testpmd --lcores=0 at 8,(4-5)@9 -n 4 -- -i --portmask=0xc + 179461 0.0 21 ./x86_64-native-linuxapp-gcc/app/testpmd --lcores=0 at 8,(4-5)@9 -n 4 -- -i --portmask=0xc + 179459 179462 80.4 9 ./x86_64-native-linuxapp-gcc/app/testpmd --lcores=0 at 8,(4-5)@9 -n 4 -- -i --portmask=0xc + 179459 179463 0.0 9 ./x86_64-native-linuxapp-gcc/app/testpmd --lcores=0 at 8,(4-5)@9 -n 4 -- -i --portmask=0xc + +You will see that there are two threads running on core 9. +The last 2 threads are running threads, their TID will be assigned to the tasks in the folder thread0. + + cd /sys/fs/cgroup/cpu/dpdk/thread0 + echo 179462 > tasks + echo 179463 > tasks + +Assgined the percentage of cpu these two threads occupy as follows: + + echo 10000 > cpu.cfs_quota_us + +This means the two threads will totally occupy 10% of the CPU and each 5%. + + +Test Case 2: Positive Test +-------------------------- + + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='0 at 8,(4-5)@(8-11)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='1,2@(0-4,6),(3-4,6)@5,(7,8)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,CONFIG_RTE_MAX_LCORE-1)@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,64-66)@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='2-5,6,7-9' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='2, (3-5)@ 3' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,7-4)@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + +Test Case 3: Negative Test +-------------------------- + + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0-,4-7)@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(-1,4-7)@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,4-7-9)@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,abcd)@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,4-7)@(1-,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,4-7)@(-1,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,4-7)@(4,5-8-9)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,4-7)@(abc,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,4-7)@(4,xyz)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0,4-7)=(8,9)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='2,3 at 4,(0-1,,4))' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='[0-,4-7]@(4,5)' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='(0-,4-7)@[4,5]' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='3-4 at 3,2 at 5-6' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='2,,3''2--3' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 + ./x86_64-native-linuxapp-gcc/app/testpmd --lcores='2,,,3''2--3' -n 4 -- -i --txfreet=32 --rxfreet=32 --txqflags=0xf01 --txrst=32 -- 2.5.0