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.
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: virt-manager   
(Show other bugs)
Version: 6.3
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: ---
Assignee: virt-mgr-maint
QA Contact: Virtualization Bugs
Keywords: Reopened
Depends On:
Blocks: 806238
TreeView+ depends on / blocked
Reported: 2012-03-23 09:42 UTC by dyuan
Modified: 2012-09-12 01:35 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 806238 (view as bug list)
Last Closed: 2012-09-12 01:35:18 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

Description dyuan 2012-03-23 09:42:43 UTC
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):

How reproducible:

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 21:38:16 UTC
What CPU usage column, Guest CPU or Host CPU? How many VCPUS does the VM have?

Comment 2 Cole Robinson 2012-06-17 22:00:13 UTC

Comment 3 dyuan 2012-08-14 08:20:41 UTC
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 2012-09-12 01:35:18 UTC
I believe this is behavior by design, so I'm closing as NOTABUG.

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