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Diffstat (limited to 'docs/yardstick/opnfv_yardstick_tc012.rst')
| -rw-r--r-- | docs/yardstick/opnfv_yardstick_tc012.rst | 61 |
1 files changed, 37 insertions, 24 deletions
diff --git a/docs/yardstick/opnfv_yardstick_tc012.rst b/docs/yardstick/opnfv_yardstick_tc012.rst index b5768c0c5..e7889c14e 100644 --- a/docs/yardstick/opnfv_yardstick_tc012.rst +++ b/docs/yardstick/opnfv_yardstick_tc012.rst @@ -2,21 +2,26 @@ 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. | +| | * 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. | @@ -27,42 +32,50 @@ Yardstick Test Case Description TC012 | | * 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 | -| | (See :ref:`guest-image` for how to generate a Linux image | -| | for Glance with Lmbench included). | +| | needs to be installed in the test image. | +| | | +--------------+--------------------------------------------------------------+ -|references | * http://manpages.ubuntu.com/manpages/trusty/bw_mem.8.html | +|references | man-pages_ | +| | | +| | McVoy, Larry W., and Carl Staelin. "lmbench: Portable Tools | +| | for Performance Analysis." USENIX annual technical | +| | conference. 1996. | | | | -| | * 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. | +|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 | step | description | result | -| +------+----------------------------------+--------------------+ -| | 1 | The host is installed as client. | Logs are stored | -| | | Lmbench's bw_mem tool is invoked | | -| | | and logs are produced and stored.| | -+--------------+------+----------------------------------+--------------------+ +| | | ++--------------+--------------------------------------------------------------+ +|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. | +| | | +--------------+--------------------------------------------------------------+ |