Bug 685161

Summary:	memcg: premature oom-kill with transparent huge pages
Product:	Red Hat Enterprise Linux 6	Reporter:	Johannes Weiner <jweiner>
Component:	kernel	Assignee:	Johannes Weiner <jweiner>
Status:	CLOSED ERRATA	QA Contact:	Caspar Zhang <czhang>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	6.1	CC:	bkozdemb, bugproxy, czhang, lwang, lwoodman, qcai
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel-2.6.32-128.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-05-19 12:43:44 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Johannes Weiner 2011-03-15 13:28:58 UTC

With transparent huge pages enabled, the OOM killer may trigger earlier on a memory cgroup close to its limit than it would have with only regular pages.

This is a regression for users that have had a working combination of workload and memory control group configuration prior to THP.

Comment 1 RHEL Program Management 2011-03-18 14:49:25 UTC

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.

Comment 2 Aristeu Rozanski 2011-03-30 14:33:08 UTC

Patch(es) available on kernel-2.6.32-128.el6

Comment 6 Johannes Weiner 2011-04-23 02:51:02 UTC

*** Bug 690178 has been marked as a duplicate of this bug. ***

Comment 8 IBM Bug Proxy 2011-04-28 12:01:00 UTC

------- Comment From sradodla.com 2011-04-28 07:53 EDT-------
(In reply to comment #17)
> With transparent huge pages enabled, the OOM killer may trigger earlier on a
> memory cgroup close to its limit than it would have with only regular pages.
>
> This is a regression for users that have had a working combination of workload
> and memory control group configuration prior to THP.
>
> This request was evaluated by Red Hat Product Management for inclusion
> in a Red Hat Enterprise Linux maintenance release. Product Management has
> requested further review of this request by Red Hat Engineering, for potential
> inclusion in a Red Hat Enterprise Linux Update release for currently deployed
> products. This request is not yet committed for inclusion in an Update release.
>
> Patch(es) available on kernel-2.6.32-128.el6
>
> *** Bug 690178 has been marked as a duplicate of this bug. ***

Hello RH,

I have verified this bugzilla on RHEL6.1 Snap4(2.6.32-131.0.1) and found that the test is running fine without any issues.

Thanks!

Comment 9 errata-xmlrpc 2011-05-19 12:43:44 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0542.html