Bug 1024010

Summary: [RFE] Report guests Buffered/Cached memory
Product: Red Hat Enterprise Virtualization Manager Reporter: Amador Pahim <asegundo>
Component: ovirt-engineAssignee: Vinzenz Feenstra [evilissimo] <vfeenstr>
Status: CLOSED ERRATA QA Contact: Jiri Belka <jbelka>
Severity: medium Docs Contact:
Priority: medium    
Version: 3.3.0CC: iheim, juwu, lsurette, mavital, mgoldboi, michal.skrivanek, omachace, rbalakri, Rhev-m-bugs, sherold, yeylon, ykaul, ylavi
Target Milestone: ovirt-3.6.0-rcKeywords: FutureFeature
Target Release: 3.6.0Flags: 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:
: 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:
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