After some days of working. i have installed , chrome, php, apache, mysql, teamviewer, skype, and few small apps. mine Freya takes time to boot. What is the reason for the delay. and anything i can do to decrease the boot time.
Control Startup Applications:
The less programs you have loading on bootup, the faster your system should be. You can control these startup applications from the system settings --> applications --> startup
(I don't have many apps to show )
BootUp-Managerfrom software center to disable any un-necessary services.
bootchartto produce detailed graphs of what takes time during boot.
Install it from software center. After installation, reboot your system, the bootchart is in
.pngfile. It might help in deciding what to remove (or disable).
From comment by @elmato
If you follow that e4rat tutorial you may hit a roadblock when you are attempting to boot into
singleuser mode (by appending single to the end of the boot option string). If you find you get no prompt, use
rw init=/bin/bashinstead of