Monitor your Boot Sequence with Bootchart

Ubuntu – Monitor your Boot Sequence with Bootchart

About Bootchart
Bootchart is a tool used to analyse your system performance in linux boot process.
It process all the required information accumulated during the boot process
(CPU usage and disk usage) which will then display as PNG, SVG, EPS encoded chart.
First of all you will have to Install Bootchart on Ubuntu.

Installation

sudo aptitude install bootchart
Reboot your PC

When you restart your computer Bootchart will create a graphical illustration in .png format.
Disabling and Enabling Bootchart
To disable Bootchart just use these code:

cd /etc/init.d

sudo update-rc.d -f stop-bootchart remove

 Removing any system startup links for /etc/init.d/stop-bootchart

   /etc/rc2.d/S99stop-bootchart
   /etc/rc3.d/S99stop-bootchart
   /etc/rc4.d/S99stop-bootchart
   /etc/rc5.d/S99stop-bootchart

And to re-enable just use these codes:

cd /etc/init.d

sudo update-rc.d stop-bootchart start 99 2 3 4 5 .

 Adding system startup for /etc/init.d/stop-bootchart ...

   /etc/rc2.d/S99stop-bootchart -> ../init.d/stop-bootchart
   /etc/rc3.d/S99stop-bootchart -> ../init.d/stop-bootchart
   /etc/rc4.d/S99stop-bootchart -> ../init.d/stop-bootchart
   /etc/rc5.d/S99stop-bootchart -> ../init.d/stop-bootchart