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Ticket Resolution Summary Owner Reporter
#5744 duplicate High Core 1 Duo host CPU usage when when multi-CPU guest is idle spaaarky21
Description

Hopefully this isn't a duplicate. I've seen a lot of similar problem mentioned in forums but most of those were for previous versions, prior to guest SMP support.

Anyway, have a Windows guest that was installed prior to guest SMP support in VBox and it works great but since it was installed when only one CPU was available to the guest, the Windows installation is not using an SMP kernel and the VM never uses more than 50% of the host's CPU time.

So, to take advantage of the host's dual core processor, I created a new VM with two CPU's and installed a fresh copy of Windows. The VM makes use of both of the host's cores now but it uses 100% of the host's CPU time when the guest is idle. I have read about similar issues in the forums but those tended to be related to specific programs like Google Chrome and MS SQL. For me, the guest is unusably slow and it takes an unreasonably long time just to boot the system and get logged in. Running applications in the guest is out of the question.

I am running VirtualBox 3.1.0 on MacOS X 10.6.2 on a MacBook with a Core 1 Duo processor. I had the same problem with VBox 2.x under OS 10.4. I wonder if the problem is specific to my laptop's CPU? A lot of people are using guest SMP successfully on Macs but I assume most of those are running on a Core 2 Duo since the original Core Duo was so short lived.

#14543 fixed Oracle Linux 6 update 7 - Not working VirtualBox 5.0.2 Sergey
Description

My host: Oracle Linux 6 Update 7 in progress install VirtualBox 5.0.2 error:

[root@DS-New ~]# yum install VirtualBox-5.0-5.0.2_102096_el6-1.x86_64.rpm
Loaded plugins: rhnplugin
This system is receiving updates from RHN Classic or Red Hat Satellite.
Setting up Install Process
Examining VirtualBox-5.0-5.0.2_102096_el6-1.x86_64.rpm: VirtualBox-5.0-5.0.2_102                                                                             096_el6-1.x86_64
Marking VirtualBox-5.0-5.0.2_102096_el6-1.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package VirtualBox-5.0.x86_64 0:5.0.2_102096_el6-1 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package
      Arch   Version            Repository                                 Size
================================================================================
Installing:
 VirtualBox-5.0
      x86_64 5.0.2_102096_el6-1 /VirtualBox-5.0-5.0.2_102096_el6-1.x86_64 165 M

Transaction Summary
================================================================================
Install       1 Package(s)

Total size: 165 M
Installed size: 165 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : VirtualBox-5.0-5.0.2_102096_el6-1.x86_64                     1/1

Creating group 'vboxusers'. VM users must be member of that group!

No precompiled module for this kernel found -- trying to build one. Messages
emitted during module compilation will be logged to /var/log/vbox-install.log.

Stopping VirtualBox kernel modules [  OK  ]
Recompiling VirtualBox kernel modules [  OK  ]
Starting VirtualBox kernel modules [  OK  ]
warning: %post(VirtualBox-5.0-5.0.2_102096_el6-1.x86_64) scriptlet failed, exit                                                                              status 1
Non-fatal POSTIN scriptlet failure in rpm package VirtualBox-5.0-5.0.2_102096_el                                                                             6-1.x86_64
  Verifying  : VirtualBox-5.0-5.0.2_102096_el6-1.x86_64                     1/1

Installed:
  VirtualBox-5.0.x86_64 0:5.0.2_102096_el6-1

Complete!
[root@DS-New ~]#

After install VirtualBox 5.0.2 not working:

# vboxwebsrv -v
Oracle VM VirtualBox web service Version 5.0.2
(C) 2007-2015 Oracle Corporation
All rights reserved.
VirtualBox web service 5.0.2 r102096 linux.amd64 (Aug 13 2015 19:15:51) release log
00:00:00.000122 main     Log opened 2015-09-04T14:16:46.602094000Z
00:00:00.000125 main     Build Type: release
00:00:00.000131 main     OS Product: Linux
00:00:00.000132 main     OS Release: 3.8.13-98.2.1.el6uek.x86_64
00:00:00.000133 main     OS Version: #2 SMP Wed Aug 19 16:33:29 PDT 2015
00:00:00.000781 main     DMI Product Name: System Product Name
00:00:00.000790 main     DMI Product Version: System Version
00:00:00.000974 main     Host RAM: 7617MB total, 7330MB available
00:00:00.000978 main     Executable: /usr/lib/virtualbox/vboxwebsrv
00:00:00.000978 main     Process ID: 32171
00:00:00.000979 main     Package type: LINUX_64BITS_EL_6
vboxwebsrv: error: failed to create the VirtualBoxClient object!
vboxwebsrv: error: Code NS_ERROR_ABORT (0x80004004) - Operation aborted (extended info not available)
vboxwebsrv: error: Most likely, the VirtualBox COM server is not running or failed to start.
#
# VBoxManage extpack cleanup
VBoxManage: error: Failed to create the VirtualBox object!
VBoxManage: error: Code NS_ERROR_ABORT (0x80004004) - Operation aborted (extended info not available)
VBoxManage: error: Most likely, the VirtualBox COM server is not running or failed to start.
[root@DS-New ~]# /etc/init.d/vboxinit start
VBoxManage: error: Failed to create the VirtualBox object!
VBoxManage: error: Code NS_ERROR_ABORT (0x80004004) - Operation aborted (extended info not available)
VBoxManage: error: Most likely, the VirtualBox COM server is not running or failed to start.
#14640 fixed Not found VirtualBox 5.0.4 Sergey
Description

Not found VirtualBox 5.0.4 in repo http://download.virtualbox.org/virtualbox/rpm/rhel/6/x86_64/

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