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Bug 1174253

Summary:	[SAP] tuned-profiles-sap sets incorrect vm.max_map_count
Product:	Red Hat Enterprise Linux 6	Reporter:	Frank Danapfel <fdanapfe>
Component:	tuned	Assignee:	Jaroslav Škarvada <jskarvad>
Status:	CLOSED ERRATA	QA Contact:	Tereza Cerna <tcerna>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	6.6	CC:	amascari, bfinger, djdumas, jeder, jskarvad, lmiccini, mnavrati, psklenar, tcerna
Target Milestone:	rc
Target Release:	6.7
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	tuned-0.2.19-15.el6	Doc Type:	Bug Fix
Doc Text:	Previously, the value of the vm.max_map_count sysctl settings was set too low (1,000,000) in the sap-netweaver tuned profile, which could affect performance. With this update, vm.max_map_count is set to 2,000,000, which is a value recommended by SAP documentation.	Story Points:	---
Clone Of:
Clones:	1228562 (view as bug list)		Environment:
Last Closed:	2015-07-22 07:15:08 UTC	Type:	Bug
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:
Bug Blocks:	1228562

Description Frank Danapfel 2014-12-15 13:54:33 UTC

Description of problem:
SAP requires that vm.max-map_count is set to 2000000 (see http://service.sap.com/sap/support/notes/1496410 and http://service.sap.com/sap/support/notes/900929), the sap-netweaver tuned profile however only sets it to 1000000

Version-Release number of selected component (if applicable):
tuned-profiles-sap-0.2.19-13.el6_6.1

How reproducible:
always

Steps to Reproduce:
1. check value in profile or run sysctl vm.max_map_count after profile has been activated
2.
3.

Actual results:
[root]# grep vm.max_map_count /etc/tune-profiles/sap-netweaver/*
/etc/tune-profiles/sap-netweaver/sysctl.ktune:vm.max_map_count = 1000000

Expected results:
[root@ls3229v4 ~]# grep vm.max_map_count /etc/tune-profiles/sap-netweaver/*
/etc/tune-profiles/sap-netweaver/sysctl.ktune:vm.max_map_count = 2000000

Additional info:

Comment 2 Jaroslav Škarvada 2015-02-27 16:47:13 UTC

Upstream commmit:
https://git.fedorahosted.org/cgit/tuned.git/commit/?h=1.0&id=03e2924b9bac1b13fb0c40c47f0c7343106afcb1

Comment 4 Tereza Cerna 2015-03-18 09:19:00 UTC

===============================================
Verified in version:
    tuned-0.2.19-15.el6.noarch
    tuned-profiles-sap-0.2.19-15.el6.noarch
PASSED
===============================================

# tuned-adm profile sap-netweaver
Reverting to saved sysctl settings: [  OK  ]
Calling '/etc/ktune.d/tunedadm.sh stop': [  OK  ]
Reverting to cfq elevator: dm-0 dm-1 sda [  OK  ]
Stopping tuned: [  OK  ]
Switching to profile 'sap-netweaver'
Applying deadline elevator: dm-0 dm-1 sda [  OK  ]
Applying sysctl settings from /etc/sysctl.conf
Applying ktune sysctl settings:
/etc/ktune.d/tunedadm.conf: [  OK  ]
Calling '/etc/ktune.d/tunedadm.sh start': [  OK  ]
Starting tuned: [  OK  ]

# sysctl vm.max_map_count
vm.max_map_count = 2000000

# grep vm.max_map_count /etc/tune-profiles/sap-netweaver/*
/etc/tune-profiles/sap-netweaver/sysctl.ktune:vm.max_map_count = 2000000

===============================================
Verified in version:
    tuned-0.2.19-13.el6_6.1.noarch
    tuned-profiles-sap-0.2.19-13.el6_6.1.noarch
PASSED
===============================================

# tuned-adm profile sap-netweaver
Switching to profile 'sap-netweaver'
Applying deadline elevator: dm-0 dm-1 dm-2 vda [  OK  ]
Applying sysctl settings from /etc/sysctl.conf
Applying ktune sysctl settings:
/etc/ktune.d/tunedadm.conf: [  OK  ]
Calling '/etc/ktune.d/tunedadm.sh start': [  OK  ]
Starting tuned: [  OK  ]

# sysctl vm.max_map_count
vm.max_map_count = 1000000

# grep vm.max_map_count /etc/tune-profiles/sap-netweaver/*
/etc/tune-profiles/sap-netweaver/sysctl.ktune:vm.max_map_count = 1000000

Comment 5 Tereza Cerna 2015-03-18 09:57:56 UTC

Sorry for typing error.

PASSED in new versions of packages:
    tuned-0.2.19-15.el6.noarch
    tuned-profiles-sap-0.2.19-15.el6.noarch

FAILED in old version of packages:
    tuned-0.2.19-13.el6_6.1.noarch
    tuned-profiles-sap-0.2.19-13.el6_6.1.noarch

Comment 6 errata-xmlrpc 2015-07-22 07:15:08 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/RHBA-2015-1376.html