Bug 806235 – Unmatched the cpu usage from virt-manager to task manager in the guest.

Bug 806235 - Unmatched the cpu usage from virt-manager to task manager in the guest.

Summary:	Unmatched the cpu usage from virt-manager to task manager in the guest.

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	virt-manager (Show other bugs)
Sub Component:
Version:	6.3
Hardware:	Unspecified Unspecified

Priority	medium Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	virt-mgr-maint
QA Contact:	Virtualization Bugs
Docs Contact:

URL:
Whiteboard:
Keywords:	Reopened

Depends On:
Blocks:	806238
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Reported:	2012-03-23 05:42 EDT by dyuan
Modified:	2012-09-11 21:35 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Clones:	806238 (view as bug list)
Environment:
Last Closed:	2012-09-11 21:35:18 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description dyuan 2012-03-23 05:42:43 EDT

Description of problem:
In the guest, the cpu usage is 100% from task manager, but it's around 29% from virt-manager.
It's better to return "no respons" when the guest cpu usage reached 100% but not stay at 29%, or it will be confused for users.

Version-Release number of selected component (if applicable):
virt-manager-0.9.0-10.el6.x86_64
virt-top-1.0.4-3.12.el6.x86_64
python-virtinst-0.600.0-7.el6.noarch
libvirt-0.9.10-6.el6

How reproducible:
always

Steps to Reproduce:
1. boot up a guest, xp-i386
2. open the IE browser, or issue other programme to occupy 100% cpu
3. track the cpu usage from task manager
  
Actual results:
unmatched cpu usage from the tools to the guest task manager.

Expected results:
Presents the true state of guest.

Additional info:

Comment 1 Cole Robinson 2012-04-02 17:38:16 EDT

What CPU usage column, Guest CPU or Host CPU? How many VCPUS does the VM have?

Comment 2 Cole Robinson 2012-06-17 18:00:13 EDT

Closing as INSUFFICIENT_DATA

Comment 3 dyuan 2012-08-14 04:20:41 EDT

Sorry for the late responds.

I have 4 physical cpu in host and 1 virtual cpu in guest, make the cpu usage to 100% in guest then get the 25% cpu usage in "performance -- CPU usage" of "show virtual hardware details", I know that it shows the usage per the whole physical cpus in host. 
But I think it should be different in "Connection Details -- Overview", because I get the cpu usage in "show virtual hardware details" against the single vm but not connection.

Comment 4 Dave Allan 2012-09-11 21:35:18 EDT

I believe this is behavior by design, so I'm closing as NOTABUG.

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