Bug 1560101 – RGW spinning at 100% CPU with no op traffic

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Bug 1560101 - RGW spinning at 100% CPU with no op traffic

Summary:	RGW spinning at 100% CPU with no op traffic

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Ceph Storage
Classification:	Red Hat
Component:	RGW (Show other bugs)
Sub Component:
Version:	2.3
Hardware:	x86_64 Linux

Priority	high Severity medium
Target Milestone:	rc
Target Release:	3.1
Assigned To:	Matt Benjamin (redhat)
QA Contact:	Tejas
Docs Contact:	John Brier

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	1584264 1595386
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Reported:	2018-03-23 17:41 EDT by Michael J. Kidd
Modified:	2018-09-26 14:21 EDT (History)
CC List:	13 users (show)

See Also:
Fixed In Version:	RHEL: ceph-12.2.5-13.el7cp Ubuntu: 12.2.5-4redhat1xenial
Doc Type:	Bug Fix
Doc Text:	.RGW no longer spikes to 100% CPU usage with no op traffic Previously in certain situations an infinite loop could be encountered in `rgw_get_system_obj()`. This could cause spikes in CPU usage. With this update to {product} this specific issue has been resolved.
Story Points:	---
Clone Of:
Clones:	1595386 (view as bug list)
Environment:
Last Closed:	2018-09-26 14:19:40 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Bugzilla	1522881	None	CLOSED	RGW Memory Leak	2018-10-11 18:08 EDT
Ceph Project Bug Tracker	17996	None	None	None	2018-03-29 11:29 EDT
Red Hat Product Errata	RHBA-2018:2819	None	None	None	2018-09-26 14:21 EDT

Groups: None (edit)

Comment 23 Ben England 2018-03-28 10:08:26 EDT

I disagree.  The most busy thread you found with top -H was only 20% of 1 core.  What is the overall CPU utilization on that host?  If it isn't above 60-70% then there is no CPU bottleneck.

Comment 33 Adam C. Emerson 2018-05-14 13:18:35 EDT

Seems unlikely, that would look like repeated calls rather than spinning and it's bounded.

Comment 47 errata-xmlrpc 2018-09-26 14:19:40 EDT

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-2018:2819

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