Yardstick Test Case Description TC004ΒΆ

Cache Utilization
test case id OPNFV_YARDSTICK_TC004_Cache Utilization
metric Cache Utilization
test purpose To evaluate the IaaS compute capability with regards to cache utilization.This test case should be run in parallel to other Yardstick test cases and not run as a stand-alone test case. Measure the cache usage statistics including cache hit, cache miss, hit ratio, page cache size and page cache size. Both average and maximun values are obtained. The purpose is also to be able to spot trends. Test results, graphs and similar shall be stored for comparison reasons and product evolution understanding between different OPNFV versions and/or configurations.
configuration

File: cachestat.yaml (in the ‘samples’ directory)

  • interval: 1 - repeat, pausing every 1 seconds in-between.
test tool

cachestat

cachestat is not always part of a Linux distribution, hence it needs to be installed.
references

cachestat

ETSI-NFV-TST001
applicability

Test can be configured with different:

  • interval;
  • runner Duration.

There are default values for each above-mentioned option. Run in background with other test cases.
pre-test conditions

The test case image needs to be installed into Glance with cachestat 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. The related TC, or TCs, is invoked and cachestat logs are produced and stored.

Result: logs are stored.
test verdict None. Cache utilization results are fetched and stored.