docs/userguide/opnfv_yardstick_tc004.rst

   1 .. This work is licensed under a Creative Commons Attribution 4.0 International
   2 .. License.
   3 .. http://creativecommons.org/licenses/by/4.0
   4 .. (c) OPNFV, Huawei Technologies Co.,Ltd and others.
   5
   6 *************************************
   7 Yardstick Test Case Description TC004
   8 *************************************
   9
  10 .. _cachestat: https://github.com/brendangregg/perf-tools/tree/master/fs
  11
  12 +-----------------------------------------------------------------------------+
  13 |Cache Utilization                                                            |
  14 |                                                                             |
  15 +--------------+--------------------------------------------------------------+
  16 |test case id  | OPNFV_YARDSTICK_TC004_Cache Utilization                      |
  17 |              |                                                              |
  18 +--------------+--------------------------------------------------------------+
  19 |metric        | Cache Utilization                                            |
  20 |              |                                                              |
  21 +--------------+--------------------------------------------------------------+
  22 |test purpose  | To evaluate the IaaS compute capability with regards to      |
  23 |              | cache utilization.This test case should be run in parallel   |
  24 |              | to other Yardstick test cases and not run as a stand-alone   |
  25 |              | test case.                                                   |
  26 |              | Measure the cache usage statistics including cache hit,      |
  27 |              | cache miss, hit ratio, page cache size and page cache size.  |
  28 |              | Both average and maximun values are obtained.                |
  29 |              | The purpose is also to be able to spot trends.               |
  30 |              | Test results, graphs and similar shall be stored for         |
  31 |              | comparison reasons and product evolution understanding       |
  32 |              | between different OPNFV versions and/or configurations.      |
  33 |              |                                                              |
  34 +--------------+--------------------------------------------------------------+
  35 |configuration | File: cachestat.yaml (in the 'samples' directory)            |
  36 |              |                                                              |
  37 |              | * interval: 1 - repeat, pausing every 1 seconds in-between.  |
  38 |              |                                                              |
  39 +--------------+--------------------------------------------------------------+
  40 |test tool     | cachestat                                                    |
  41 |              |                                                              |
  42 |              | cachestat is not always part of a Linux distribution, hence  |
  43 |              | it needs to be installed.                                    |
  44 |              |                                                              |
  45 +--------------+--------------------------------------------------------------+
  46 |references    | cachestat_                                                   |
  47 |              |                                                              |
  48 |              | ETSI-NFV-TST001                                              |
  49 |              |                                                              |
  50 +--------------+--------------------------------------------------------------+
  51 |applicability | Test can be configured with different:                       |
  52 |              |                                                              |
  53 |              |  * interval;                                                 |
  54 |              |  * runner Duration.                                          |
  55 |              |                                                              |
  56 |              | There are default values for each above-mentioned option.    |
  57 |              | Run in background with other test cases.                     |
  58 |              |                                                              |
  59 +--------------+--------------------------------------------------------------+
  60 |pre-test      | The test case image needs to be installed into Glance        |
  61 |conditions    | with cachestat included in the image.                        |
  62 |              |                                                              |
  63 |              | No POD specific requirements have been identified.           |
  64 |              |                                                              |
  65 +--------------+--------------------------------------------------------------+
  66 |test sequence | description and expected result                              |
  67 |              |                                                              |
  68 +--------------+--------------------------------------------------------------+
  69 |step 1        | The host is installed as client. The related TC, or TCs, is  |
  70 |              | invoked and cachestat logs are produced and stored.          |
  71 |              |                                                              |
  72 |              | Result: logs are stored.                                     |
  73 |              |                                                              |
  74 +--------------+--------------------------------------------------------------+
  75 |test verdict  | None. Cache utilization results are fetched and stored.      |
  76 |              |                                                              |
  77 +--------------+--------------------------------------------------------------+