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diff --git a/docs/userguide/opnfv_yardstick_tc012.rst b/docs/userguide/opnfv_yardstick_tc012.rst new file mode 100644 index 000000000..ffce06eb9 --- /dev/null +++ b/docs/userguide/opnfv_yardstick_tc012.rst @@ -0,0 +1,86 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Ericsson AB and others. + +************************************* +Yardstick Test Case Description TC012 +************************************* + +.. _man-pages: http://manpages.ubuntu.com/manpages/trusty/bw_mem.8.html + ++-----------------------------------------------------------------------------+ +|Memory Bandwidth | +| | ++--------------+--------------------------------------------------------------+ +|test case id | OPNFV_YARDSTICK_TC012_Memory Bandwidth | +| | | ++--------------+--------------------------------------------------------------+ +|metric | Megabyte per second (MBps) | +| | | ++--------------+--------------------------------------------------------------+ +|test purpose | Measure the rate at which data can be read from and written | +| | to the memory (this includes all levels of memory). | +| | | ++--------------+--------------------------------------------------------------+ +|configuration | File: opnfv_yardstick_tc012.yaml | +| | | +| | * SLA (optional): 15000 (MBps) min_bw: The minimum amount of | +| | memory bandwidth that is accepted. | +| | * Size: 10 240 kB - test allocates twice that size (20 480kB)| +| | zeros it and then measures the time it takes to copy from | +| | one side to another. | +| | * Benchmark: rdwr - measures the time to read data into | +| | memory and then write data to the same location. | +| | * Warmup: 0 - the number of iterations to perform before | +| | taking actual measurements. | +| | * Iterations: 10 - test is run 10 times iteratively. | +| | * Interval: 1 - there is 1 second delay between each | +| | iteration. | +| | | ++--------------+--------------------------------------------------------------+ +|test tool | Lmbench | +| | | +| | Lmbench is a suite of operating system microbenchmarks. This | +| | test uses bw_mem tool from that suite. | +| | Lmbench is not always part of a Linux distribution, hence it | +| | needs to be installed in the test image. | +| | | ++--------------+--------------------------------------------------------------+ +|references | man-pages_ | +| | | +| | McVoy, Larry W., and Carl Staelin. "lmbench: Portable Tools | +| | for Performance Analysis." USENIX annual technical | +| | conference. 1996. | +| | | ++--------------+--------------------------------------------------------------+ +|applicability | Test can be configured with different: | +| | | +| | * memory sizes; | +| | * memory operations (such as rd, wr, rdwr, cp, frd, fwr, | +| | fcp, bzero, bcopy); | +| | * number of warmup iterations; | +| | * iterations and intervals. | +| | | +| | There are default values for each above-mentioned option. | +| | | ++--------------+--------------------------------------------------------------+ +|pre-test | The test case image needs to be installed into Glance | +|conditions | with Lmbench included in the image. | +| | | +| | No POD specific requirements have been identified. | +| | | ++--------------+--------------------------------------------------------------+ +|test sequence | description and expected result | +| | | ++--------------+--------------------------------------------------------------+ +|step 1 | The host is installed as client. Lmbench's bw_mem tool is | +| | invoked and logs are produced and stored. | +| | | +| | Result: logs are stored. | +| | | ++--------------+--------------------------------------------------------------+ +|test verdict | Test fails if the measured memory bandwidth is below the SLA | +| | value or if there is a test case execution problem. | +| | | ++--------------+--------------------------------------------------------------+ |