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Bug 974471

Summary:	pam_cgroup is slow when cgrules.conf and /etc/passwd are large
Product:	Red Hat Enterprise Linux 6	Reporter:	Jan Kurik <jkurik>
Component:	libcgroup	Assignee:	Peter Schiffer <pschiffe>
Status:	CLOSED ERRATA	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	high	Docs Contact:
Priority:	urgent
Version:	6.4	CC:	abienven, agrimm, jeder, jkurik, jsafrane, jwest, mmahut, pm-eus, pschiffe, rmillner, twiest, varekova, wduffee
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Previously, the pam_cgoup PAM module did not use cache. Consequently, when a system had several thousand users and the cgrules.conf file contained several thousand lines of configuration settings, the login time could take several seconds. This was because the libcgroup code read /etc/passwd once for every line in cgrules.conf, unless the CGFLAG_USECACHE flag was used. With this update, the libcgroup code no longer reads the /etc/passwd file once for every line in cgrules.conf, and the login time is no longer affected in the described scenario.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-06-25 14:07:54 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:
Bug Depends On:	972893
Bug Blocks:

Description Jan Kurik 2013-06-14 08:54:29 UTC

This bug has been copied from bug #972893 and has been proposed
to be backported to 6.4 z-stream (EUS).

Comment 5 Mike Gahagan 2013-06-19 19:08:05 UTC

bug reproduced with libcgroup-0.37-7.1.el6_4 and fix verified with libcgroup-0.37-7.2.el6_4 per reproducer in bz 972893.

Comment 7 errata-xmlrpc 2013-06-25 14:07:54 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.

http://rhn.redhat.com/errata/RHBA-2013-0975.html