Bug 1024010 - [RFE] Report guests Buffered/Cached memory
Summary: [RFE] Report guests Buffered/Cached memory
Alias: None
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: ovirt-engine
Version: 3.3.0
Hardware: All
OS: Linux
Target Milestone: ovirt-3.6.0-rc
: 3.6.0
Assignee: Vinzenz Feenstra [evilissimo]
QA Contact: Jiri Belka
Depends On: 1024007
Blocks: 1203189 1209910
TreeView+ depends on / blocked
Reported: 2013-10-28 14:57 UTC by Amador Pahim
Modified: 2023-05-29 18:30 UTC (History)
13 users (show)

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.
Clone Of:
: 1203189 (view as bug list)
Last Closed: 2016-03-09 20:33:25 UTC
oVirt Team: Virt
Target Upstream Version:
sherold: Triaged+

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2016:0376 0 normal SHIPPED_LIVE Red Hat Enterprise Virtualization Manager 3.6.0 2016-03-10 01:20:52 UTC
oVirt gerrit 35954 0 master MERGED Report guest free/buffered/cached memory 2021-02-19 18:45:44 UTC
oVirt gerrit 41946 0 master MERGED db: Fix size of guest memory information from INTEGER => BIGINT 2021-02-19 18:45:44 UTC

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.


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