Bug 1896359

Summary:	"Count threads as cores" option is not honored by the RHV Dashboard CPU graph
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Juan Orti <jortialc>
Component:	ovirt-engine-dwh	Assignee:	Aviv Litman <alitman>
Status:	CLOSED ERRATA	QA Contact:	Pavel Novotny <pnovotny>
Severity:	low	Docs Contact:
Priority:	medium
Version:	4.3.11	CC:	bcholler, dfodor, emarcus, gdeolive, hstastna, lsurette, mavital, mhicks, mperina, pelauter, sgratch, srevivo
Target Milestone:	ovirt-4.4.7
Target Release:	4.4.7
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ovirt-engine-dwh-4.4.7.2 ovirt-engine-4.4.7	Doc Type:	Deprecated Functionality
Doc Text:	The column name threads_per_core in the Red hat Virtualization manager Dashboard is being deprecated, and will be removed in a future release. In version 4.4.7.2 the column name for threads_per_core will be changed to number_of_threads. In the Data Warehouse, the old name will be retained as an additional alias, resulting in 2 columns providing the same data: number_of_threads and threads_per_core, and threads_per_core will be removed in a future version.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-07-22 15:12:18 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Metrics	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1962641

Description Juan Orti 2020-11-10 11:03:46 UTC

Description of problem:
The RHV Manager dashboard does not honor the "count threads as cores" cluster option. Enabling or disabling that option does not alter the percentages of commited and allocated CPU.

Version-Release number of selected component (if applicable):
ovirt-engine-4.3.11.4-0.1.el7.noarch

How reproducible:
Always

Steps to Reproduce:
1. Use RHV 4.3.11 manager and hosts.
2. Hosts have SMT CPU and SMT is enabled.
3. Have some VMs running.
4. Check/Uncheck the "count threads as cores" option of the cluster. Verify in the dashboard the committed and allocated CPU values.

Actual results:
Committed and allocated CPU values are not affected by the "count threads as cores" option

Expected results:
The percentage calculation of the dashboard should be based on the "count threads as cores" option.

Additional info:

Comment 2 Sharon Gratch 2021-01-07 15:06:10 UTC

*** Bug 1896192 has been marked as a duplicate of this bug. ***

Comment 17 Pavel Novotny 2021-07-10 01:10:35 UTC

Verified in 
ovirt-engine-4.4.7.6-0.11.el8ev.noarch
ovirt-engine-dwh-4.4.7.3-1.el8ev.noarch

I checked the columns threads_per_core and number_of_threads in the host views and they match (also the host CPU topology).
Also verified that column count_threads_as_cores matches the cluster 'Count Threads As Cores' settings.
Another verification of these values has been done via Grafana dashboards in bug 1962641 comment 2.

Comment 21 errata-xmlrpc 2021-07-22 15:12:18 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: RHV Manager (ovirt-engine) security update [ovirt-4.4.7]), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:2865

Comment 22 meital avital 2022-07-20 09:04:00 UTC

Due to QE capacity, we are not going to cover this issue in our automation