Adds resident memory size meter to libvirt inspector¶
https://blueprints.launchpad.net/ceilometer/+spec/memory-resident
Memory statistics include just the actual usage inside the Virtual Machine. The ‘memory.resident’ metric will add the resident memory size. The implementation is done in the libvirt inspector. The value will be fetched using the libvirt API and the ‘rss’ for dommemstats.
Problem description¶
Resident memory is important to see the amount of memory consumed by the Virtual Machine from the Physical Host. This spec adds the resident memory statistics to the libvirt inspector.
Proposed change¶
Implements the method ‘inspect_memory_resident’ of LibvirtInspector, fetches the rss value for memory from libvirt API ‘virDomainMemoryStats’. The libvirt API ‘virDomainMemoryStats’.
Alternatives¶
None
Data model impact¶
None
REST API impact¶
None
Security impact¶
None
Pipeline impact¶
None
Other end user impact¶
None
Performance/Scalability Impacts¶
None
Other deployer impact¶
None
Developer impact¶
None
Implementation¶
Assignee(s)¶
- Primary assignee:
vivek-nandavanam
Work Items¶
Implements the method ‘inspect_memory_resident’ of LibvirtInspector.
Updates ceilometer measurements document.
Future lifecycle¶
Once this feature enabled, need test and bug fixing in next 2 releases to avoid regression.
Dependencies¶
libvirt 0.7.5
Testing¶
Unit tests should be sufficient.
Documentation Impact¶
The added metrics will need to be documented in https://github.com/openstack/openstack-manuals/blob/master/doc/admin-guide-cloud/source/telemetry-measurements.rst which will get reflected in the cloud admin documentation http://docs.openstack.org/admin-guide-cloud/telemetry-measurements.html#openstack-compute
