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Handle deprecated "cpu_util" metric

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The "cpu_util" metric has been deprecated a few years ago.
We'll obtain the same result by converting the cumulative cpu
time to a percentage, leveraging the rate of change aggregation.

Change-Id: I18fe0de6f74c785e674faceea0c48f44055818fe
This commit is contained in:
Lucian Petrut
2023-10-10 14:29:06 +03:00
parent 922478fbda
commit 00fea975e2
9 changed files with 74 additions and 31 deletions
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17
doc/source/strategies/workload-stabilization.rst
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@@ -27,9 +27,8 @@ metric service name plugins comment
to ``cpu.virt_driver`` in the
nova.conf.
``hardware.memory.used`` ceilometer_ SNMP_
``cpu_util`` ceilometer_ none cpu_util has been removed
since Stein.
``memory.resident`` ceilometer_ none
``cpu`` ceilometer_ none
``instance_ram_usage`` ceilometer_ none
============================ ============ ======= =============================
.. _ceilometer: https://docs.openstack.org/ceilometer/latest/admin/telemetry-measurements.html#openstack-compute
@@ -107,10 +106,10 @@ parameter type default Value description
period of all received ones.
==================== ====== ===================== =============================
.. |metrics| replace:: ["cpu_util", "memory.resident"]
.. |thresholds| replace:: {"cpu_util": 0.2, "memory.resident": 0.2}
.. |weights| replace:: {"cpu_util_weight": 1.0, "memory.resident_weight": 1.0}
.. |instance_metrics| replace:: {"cpu_util": "compute.node.cpu.percent", "memory.resident": "hardware.memory.used"}
.. |metrics| replace:: ["instance_cpu_usage", "instance_ram_usage"]
.. |thresholds| replace:: {"instance_cpu_usage": 0.2, "instance_ram_usage": 0.2}
.. |weights| replace:: {"instance_cpu_usage_weight": 1.0, "instance_ram_usage_weight": 1.0}
.. |instance_metrics| replace:: {"instance_cpu_usage": "compute.node.cpu.percent", "instance_ram_usage": "hardware.memory.used"}
.. |periods| replace:: {"instance": 720, "node": 600}
Efficacy Indicator
@@ -136,8 +135,8 @@ How to use it ?
at1 workload_balancing --strategy workload_stabilization
$ openstack optimize audit create -a at1 \
-p thresholds='{"memory.resident": 0.05}' \
-p metrics='["memory.resident"]'
-p thresholds='{"instance_ram_usage": 0.05}' \
-p metrics='["instance_ram_usage"]'
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