Bug 1636253 - mon: High MON cpu usage when cluster is changing
Summary: mon: High MON cpu usage when cluster is changing
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: RADOS
Version: 3.1
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: z1
: 3.1
Assignee: Neha Ojha
QA Contact: Parikshith
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-10-04 20:44 UTC by Neha Ojha
Modified: 2018-11-09 01:01 UTC (History)
8 users (show)

Fixed In Version: RHEL: ceph-12.2.5-55.el7cp Ubuntu: ceph_12.2.5-40redhat1
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-11-09 01:00:57 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Ceph Project Bug Tracker 23912 0 None None None 2018-10-04 20:44:09 UTC
Red Hat Product Errata RHBA-2018:3530 0 None None None 2018-11-09 01:01:18 UTC

Description Neha Ojha 2018-10-04 20:44:10 UTC 
Description of problem:

After upgrading to Luminous 12.2.4 (from Jewel 10.2.5), consistently high cpu usage was seen when OSDMap changed, especially from DOWN to UP.



Additional info:

Related tracker issue: 

http://tracker.ceph.com/issues/23912
http://tracker.ceph.com/issues/25100
Comment 7 Neha Ojha 2018-10-08 20:44:44 UTC 
Hi Parikshith,

These steps look fine to me. 

I would suggest you to monitor the CPU utilization and report it back in this bz. FWIW, it should not be exceedingly high(300%) as was seen in the bug report.

Thanks,
Neha
Comment 11 errata-xmlrpc 2018-11-09 01:00:57 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/RHBA-2018:3530
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