Bug 1024010

Summary:	[RFE] Report guests Buffered/Cached memory
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Amador Pahim <asegundo>
Component:	ovirt-engine	Assignee:	Vinzenz Feenstra [evilissimo] <vfeenstr>
Status:	CLOSED ERRATA	QA Contact:	Jiri Belka <jbelka>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.3.0	CC:	iheim, juwu, lsurette, mavital, mgoldboi, michal.skrivanek, omachace, rbalakri, Rhev-m-bugs, sherold, yeylon, ykaul, ylavi
Target Milestone:	ovirt-3.6.0-rc	Keywords:	FutureFeature
Target Release:	3.6.0	Flags:	sherold: Triaged+
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:	A virtual machine's buffered or cached memory is now taken into account in the Extract, Transform and Load (ETL) process. Some applications, like the Oracle Directory Server, uses cached memory as permanent memory and never releases it. As a result, users need to take this memory into account when planning for memory requirements. The data is collected each minute, hour and day as a default and users can create ad hoc reports based on the collected data.	Story Points:	---
Clone Of:
Clones:	1203189 (view as bug list)		Environment:
Last Closed:	2016-03-09 20:33:25 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Virt	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1024007
Bug Blocks:	1203189, 1209910

Description Amador Pahim 2013-10-28 14:57:04 UTC

Some applications, like Oracle Directory Server, use cached memory and never release it. Users need to take this memory into account when planning the memory requirements.
Please report guests Buffered/Cached memory in addition to used memory, currently reported as a percent bar.
I'd suggest to add a field in Guest General sub-tab with "Free: X, Buffered: Y, Cached: Z."

Comment 1 Michal Skrivanek 2014-06-13 14:16:27 UTC

added way after 3.5 dates.
moving out, please bring up for future release planning sessions

Comment 4 Jiri Belka 2015-04-17 16:38:07 UTC

ok, ovirt-engine-webadmin-portal-3.6.0-0.0.master.20150412172306.git55ba764.el6.noarch / rhevm-guest-agent-common-1.0.10-2.el6ev

Guest OS Memory Free/Cached/Buffered: 871 / 12 / 132 MB

# vdsClient -s 0 getAllVmStats | grep mem_
        memoryStats = {'swap_out': '0', 'majflt': '0', 'swap_usage': '0', 'mem_cached': '135756', 'mem_free': '892496', 'mem_buffers': '12808', 'swap_in': '0', 'swap_total': '2097148', 'pageflt': '0', 'mem_total': '1018504', 'mem_unused': '743932'}

Comment 7 errata-xmlrpc 2016-03-09 20:33:25 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, 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://rhn.redhat.com/errata/RHEA-2016-0376.html