Bug 743212

Summary: Something is using 100% CPU and constant IO but TOP does not show it.
Product: [Fedora] Fedora Reporter: jeff <jcmj>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 15CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-10-10 14:18:46 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Attachments:
Description Flags
Top Screen Shot showing 100 CPU but process running do not add up to 100?
none
Better screen shot none

Description jeff 2011-10-04 09:13:54 UTC
Created attachment 526204 [details]
Top Screen Shot showing 100 CPU but process running do not add up to 100?

Description of problem:
Something is using 100% CPU and constant IO but TOP does not show it.

Version-Release number of selected component (if applicable):
Fedora 15

How reproducible:
Always

Steps to Reproduce:
1.Boot up Fedora 15 as a Virtual Box Guest(4.0.12)
2.Log In as a user KDE plasma
3.Run top.
  
Actual results:
100% CPU and all this IO wait. But top is no where near 100%

Expected results:
Idle cpu no IO wait like in Fedora 14

Additional info:See attached screen shot

Comment 1 jeff 2011-10-04 09:27:45 UTC
Created attachment 526210 [details]
Better screen shot

Comment 2 Dave Jones 2011-10-04 15:33:50 UTC
try iotop ?

Comment 3 jeff 2011-10-06 02:45:36 UTC
Will do the next time it happens.

Also, I did perhaps catch the culprit yesterday with TOP it appears VBox client 4.0.12 has an issue.

New version out today 4.1.4 and have installed it and will monitor.

Comment 4 Josh Boyer 2011-10-10 14:18:46 UTC
We're going to close this out for now.  If you can recreate this on a stock Fedora kernel and can gather more data, please reopen.