Bug 1044415 - Libvirtd CPU usage goes to 100%
Summary: Libvirtd CPU usage goes to 100%
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.4
Hardware: x86_64
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: Dave Anderson
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: 1075802 1159933 1172231 1270638
TreeView+ depends on / blocked
 
Reported: 2013-12-18 09:36 UTC by pagupta
Modified: 2018-12-06 15:36 UTC (History)
13 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-10-14 16:03:03 UTC
Target Upstream Version:


Attachments (Terms of Use)
gdb core of libvirt (10.51 MB, application/x-xz)
2014-02-21 12:18 UTC, Jaison Raju
no flags Details

Description pagupta 2013-12-18 09:36:25 UTC
Description of problem:

Libvirtd CPU usage goes to 100% for more than 15 minutes.

Customer tried to get core dump but could not attach gdb to libvirtd as it was not responding during the time of issue.


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

libvirt-0.10.2-18.el6_4.14.x86_64


How reproducible:

Steps to Reproduce:
1.
2.
3.

Actual results: libvirtd CPU usage goes to 100% for more than 15 minutes.


Expected results:


Additional info:

Comment 9 Jaison Raju 2014-02-21 12:18:07 UTC
Created attachment 865954 [details]
gdb core of libvirt

libvirt-0.10.2-29.el6.1.x86_64

Comment 10 Michal Privoznik 2014-02-28 16:13:07 UTC
(In reply to Jaison Raju from comment #9)
> Created attachment 865954 [details]
> gdb core of libvirt
> 
> libvirt-0.10.2-29.el6.1.x86_64

I don't think I can read much from the core file. I mean, a core file is created in a single shot hence it captures only one state that an application is currently in. And this can be completely unrelated state. In order to identify bottleneck I need to get a consecutive states = profile info. The best would be to gather profile data via oprofile which offers insight into whole system, not just a single application. Jaison, can you try to get the profile data?


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