Visit Jeremy's Blog.
Go Back > Forums > Linux Forums > Linux - Distributions > Ubuntu
User Name
Ubuntu This forum is for the discussion of Ubuntu Linux.


  Search this Thread
Old 03-05-2012, 01:19 AM   #1
Registered: Oct 2011
Location: India, Mumbai
Distribution: RHEL, Fedora,Ubuntu, Centos, Windows XP & Windows 7
Posts: 44

Rep: Reputation: Disabled
CPU & RAM Utilization is very high even after All Updates


I am trying to use Ubuntu 11.10 in my oracle Virtual box 4.1.8.
I installed all security and application updates via apt-get upgrade command.
on Google i found the solution that after updates os will perform well and the hardware utilization will reduced.
but nothing worked.
my Virtual os cpu utilization goes to 95% in ideal mode this happens in Oracle virtualbox as well as in VM WARE too but my base machine cpu utilization shows only 10% to 20% only.

If any one have solution on this plz share.

Also i am planning to install Ubuntu 11.10 in my 8 GB Pen drive.
my total physical ram is 4 gb.

Plz if possible help me and tell me what will be the / , /boot & swap partition size.
Old 03-05-2012, 09:18 AM   #2
Registered: Mar 2011
Location: Surrey B.C. Canada (Metro Vancouver)
Distribution: Slackware
Posts: 183
Blog Entries: 1

Rep: Reputation: 25
CPU and Memory Utilization

That is two questions and it is ill advised to ask two question (unrelated) in the same posting. I will ask the moderator to move part two to another forum.

Why don't you run top and watch the utilization and observe which programs are using the most. After a an upgrade the gam_server, Akonadi and other indexing apps will run for a while to catch up. Things should settle down after a while
Old 03-05-2012, 09:38 AM   #3
Senior Member
Registered: Feb 2009
Posts: 4,399

Rep: Reputation: 1270Reputation: 1270Reputation: 1270Reputation: 1270Reputation: 1270Reputation: 1270Reputation: 1270Reputation: 1270Reputation: 1270
Your theory that "applying updates will allow Ubuntu to run quickly on a system where it previously ran slowly" is unfortunately incorrect.

1. My educated guess: Ubuntu's default Unity desktop environment (based on Compiz) has a lot of 3-D effects and requires a capable graphics card. Since you are running in a virtual machine, Ubuntu probably cannot use your hardware GPU, therefore the visual effects are slamming the (virtual) CPU. Make sure you disable all effects for best performance; better yet, use a lightweight desktop such as LXDE. Also make sure that your virtual machine meets Ubuntu's minimum system requirements:

2. Easy 1-2-3-4 instructions (with screenshots and no partitioning necessary) to run Ubuntu from a pen drive:

Last edited by snowpine; 03-05-2012 at 09:41 AM.
1 members found this post helpful.
Old 03-07-2012, 07:23 AM   #4
Registered: Oct 2011
Location: India, Mumbai
Distribution: RHEL, Fedora,Ubuntu, Centos, Windows XP & Windows 7
Posts: 44

Original Poster
Rep: Reputation: Disabled
Thanks Guys for your Help.

I installed Ubuntu on base machine using wubi.exe.
Now its working absolutely fine and better than windows7 also got better effects from compiz.
Thanks once again for the help.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
High CPU utilization on only one CPU out of 4 CPUs makam.sreekanth Linux - Kernel 2 09-03-2009 04:12 AM
high cpu utilization saumzy Linux - Newbie 1 04-03-2009 06:37 AM
High CPU & RAM usage in Slackware 12 gopi.d Slackware 11 10-26-2007 02:50 AM
High CPU utilization on deb 3.1 maybbach Debian 2 12-16-2005 11:54 AM
cpu utilization in windows xp too high... spyghost General 3 10-15-2003 07:23 AM > Forums > Linux Forums > Linux - Distributions > Ubuntu

All times are GMT -5. The time now is 06:35 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration