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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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24
doc/source/strategies/workload_balance.rst
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@@ -24,8 +24,7 @@ The *workload_balance* strategy requires the following metrics:
======================= ============ ======= =========================
metric service name plugins comment
======================= ============ ======= =========================
``cpu_util`` ceilometer_ none cpu_util has been removed
since Stein.
``cpu`` ceilometer_ none
``memory.resident`` ceilometer_ none
======================= ============ ======= =========================
@@ -65,15 +64,16 @@ Configuration
Strategy parameters are:
============== ====== ============= ====================================
parameter type default Value description
============== ====== ============= ====================================
``metrics`` String 'cpu_util' Workload balance base on cpu or ram
utilization. choice: ['cpu_util',
'memory.resident']
``threshold`` Number 25.0 Workload threshold for migration
``period`` Number 300 Aggregate time period of ceilometer
============== ====== ============= ====================================
============== ====== ==================== ====================================
parameter type default Value description
============== ====== ==================== ====================================
``metrics`` String 'instance_cpu_usage' Workload balance base on cpu or ram
utilization. Choices:
['instance_cpu_usage',
'instance_ram_usage']
``threshold`` Number 25.0 Workload threshold for migration
``period`` Number 300 Aggregate time period of ceilometer
============== ====== ==================== ====================================
Efficacy Indicator
------------------
@@ -95,7 +95,7 @@ How to use it ?
at1 workload_balancing --strategy workload_balance
$ openstack optimize audit create -a at1 -p threshold=26.0 \
-p period=310 -p metrics=cpu_util
-p period=310 -p metrics=instance_cpu_usage
External Links
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