Bug 1360696

Summary: [Docs][Admin] Add a note that MaxFreeMemoryForOverUtilized and MinFreeMemoryForUnderUtilized have to be both set when memory based scheduling is expected
Product: Red Hat Enterprise Virtualization Manager Reporter: Yanir Quinn <yquinn>
Component: DocumentationAssignee: Billy Burmester <bburmest>
Status: CLOSED CURRENTRELEASE QA Contact: Byron Gravenorst <bgraveno>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0.2CC: lbopf, lsurette, melewis, msivak, rbalakri, rgolan, srevivo, trichard, ykaul, ylavi, yquinn
Target Milestone: ovirt-4.1.9Keywords: Triaged
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-02-22 04:55:18 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Docs RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
Memory based cluster auto balancing with imporant missing points highlight and imagesed none

Description Yanir Quinn 2016-07-27 11:01:35 UTC 
Created attachment 1184593 [details]
Memory based cluster auto balancing with imporant missing points highlight and imagesed

Description of problem:

Load balancing documentation is lacking some information regarding "CPU and Memory based cluster auto balancing".

In some scenarios, a user can choose only one threshold for memory balancing which will lead to unwanted results.
(see https://bugzilla.redhat.com/show_bug.cgi?id=1359767) 


Additional points can be added to the documentation to clarify memory based load balancing.

The missing points and additional descriptive images are attached.


Version-Release number of selected component (if applicable):
4.0 upstream 

How reproducible:
-

Steps to Reproduce:
See 
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.6/html/Technical_Reference/Load_Balancing_Policy.html

and in sections
5.4. Load Balancing Policy: Evenly_Distributed
5.5. Load Balancing Policy: Power_Saving

Actual results:
Some key points regarding memory based load balancing will be a part of the documentation 

Expected results:
Add the needed information according to the attachment / wiki page. 
1.highlighted points
2.images
3.other info that might seem important and missing (in lower priority) 

Additional info:
-The most important missing items are marked in the attached document. 

-wiki page can be found under 
http://old.ovirt.org/Features/Sla/MemoryBasedBalancing 
*please note - it is missing one important bullet
"Setting only one of the thresholds in memory based balancing (high or low) might lead to unexpected results."
(can be found in the attached document)
Comment 2 Tahlia Richardson 2017-02-01 03:04:18 UTC 
*** Bug 1376289 has been marked as a duplicate of this bug. ***
Comment 6 Lucy Bopf 2018-01-08 04:27:36 UTC 
Updating status to match new requirement, and moving back to the default assignee.
Comment 7 Lucy Bopf 2018-02-13 04:32:35 UTC 
Assigning to Billy for review.
Comment 10 Byron Gravenorst 2018-02-22 04:27:46 UTC 
Reviewed and merged. Moving to Verified.
Comment 11 Billy Burmester 2018-02-22 04:55:18 UTC 
Now published:

[4.0] https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.0/html-single/administration_guide/

[4.1] https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.1/html-single/administration_guide/

[4.2b] https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.2-beta/html-single/administration_guide/