Bug 1489867

Summary: MongoDB and NUMA on Physical Server
Product: Red Hat Software Collections Reporter: Matthew Robson <mrobson>
Component: mongodbAssignee: Marek Skalický <mskalick>
Status: CLOSED ERRATA QA Contact: Vaclav Danek <vdanek>
Severity: medium Docs Contact:
Priority: unspecified    
Version: rh-mongodb36CC: databases-maint, hhorak, mrobson, rbost, vdanek
Target Milestone: ---   
Target Release: 3.1   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: rh-mongodb36-mongodb-3.6.3-2.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1495238 (view as bug list) Environment:
Last Closed: 2018-05-03 05:01:54 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: 1495238    
Bug Blocks:    

Description Matthew Robson 2017-09-08 14:13:33 UTC 
Description of problem:

Running the SCL mongodb image on OpenShift with an underlying physical server prints warnings related to NUMA and performance.

2017-09-07T16:25:00.984+0000 [initandlisten] ** WARNING: You are running on a NUMA machine.
2017-09-07T16:25:00.984+0000 [initandlisten] **          We suggest launching mongod like this to avoid performance problems:
2017-09-07T16:25:00.984+0000 [initandlisten] **              numactl --interleave=all mongod [other options]


Version-Release number of selected component (if applicable):
mongodb 3.2

How reproducible:

Always.


Steps to Reproduce:
1. Bring up a mongo container on a physical server with NUMA

Actual results:

Warnings and potential performance related issues.

Expected results:

A flag or option to start mongodb with numactl (assuming it's installed) as per the mongodb recommendations.

Additional info:
Comment 7 Marek Skalický 2018-02-27 11:49:30 UTC 
Fix for this won't be enabled by default - it isn't applicable for s390x architecture and it is kind of performance tuning ~ it won't fit everybody.

In rh-mongodb36 it will be possible to use numactl to launch mongodb server when using systemd service files. It can be done by editing /etc/sysconfig/mongod or /etc/sysconfig/mongos files - NUMACTL variable is used to launch mongod/mongos server.
(upstream recommended value is provided in comment in sysconfig files)

Are you requesting to change this in rh-mongodb32 or can I move this bug to rh-mongodb36 version and close it?
Comment 8 Matthew Robson 2018-02-27 14:07:51 UTC 
Configurable is great.

Moving it to fix the next release is fine.

Matt
Comment 17 errata-xmlrpc 2018-05-03 05:01:54 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.

https://access.redhat.com/errata/RHEA-2018:1281