Bug 1318817 - sediff consumes too much memory
Summary: sediff consumes too much memory
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: setools
Version: 7.3
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Petr Lautrbach
QA Contact: Milos Malik
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-03-17 22:52 UTC by Milos Malik
Modified: 2016-04-27 13:39 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 1318822 (view as bug list)
Environment:
Last Closed: 2016-04-27 13:39:01 UTC
Target Upstream Version:


Attachments (Terms of Use)

Description Milos Malik 2016-03-17 22:52:22 UTC
Description of problem:
 * sediff gets killed by OOM killer when --allow or --dontaudit or --stats parameter is used

Version-Release number of selected component (if applicable):
setools-console-3.3.8-1.el7.x86_64

How reproducible:
always

Steps to Reproduce:
# sediff --allow /etc/selinux/targeted/policy/policy.29 \; /etc/selinux/targeted/policy/policy.30 
Killed
# echo $?
137
# dmesg | tail -n 2
[ 4033.789560] Out of memory: Kill process 5430 (sediff) score 672 or sacrifice child
[ 4033.789561] Killed process 5430 (sediff) total-vm:1360016kB, anon-rss:569884kB, file-rss:0kB
#

Actual results:
 * sediff is killed by OOM killer because it consumed too much memory

Expected results:
 * sediff works as expected and terminates correctly

Comment 1 Milos Malik 2016-03-18 08:29:52 UTC
sediff finished on a ppc64 machine equipped by 16GB RAM. The peak of memory allocated by the sediff process in about 7GB.

Comment 2 Petr Lautrbach 2016-03-18 08:37:06 UTC
I'm not sure we can do it for RHEL-7.3. It would need an upstream patch while setools3 is considered mature and should be obsoleted soon by setools4.

As a workaround, if you need to do memory demanding operations, just raise amount of memory attached to your VMs.


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