Thank u sir So basically the init process slow downs the android boot up time.. Recently i came accross a link which showed the booting of android that is the display of the home screen in 1 sec..
http://www.linuxfordevices.com/c/a/News/Ubiquitous-QuickBoot/?kc=LNXDEVNL032410 On Wed, Aug 24, 2011 at 4:58 AM, Tim Bird <tim.b...@am.sony.com> wrote: > On 08/22/2011 01:59 AM, NilesH wrote: > > BASIC IDEA: > > In embedded systems, existing bootloaders run in three stages. But the > > main focus should be on the vendor bootloader and the third stage > > bootloader. U-boot and Barebox are examples of third stage bootloaders > > that provide a rich set of features. It propose to eliminate the third > > stage bootloader by combining its essential features into the vendor > > bootloader, creating a single stage bootloader. > > Just a comment on this. While improvements to bootloader performance > are helpful, the kernel and bootloader are not the difficult problem > areas in Android boot time. Techniques for achieving boot times > for the bootloader and kernel in the 1 to 2 second range are > well-documented (see http://elinux.org/Boot_Time for resources). > Of course there's always a good amount of effort required getting > the specific solutions working on your hardware ;-) > > However, the big problem with Android boot time is the user-space > portion of the boot. The overall init system, involving > loading and initializing multiple daemons (some with networking > waits), as well as initializing zygote and preloading classes, > and doing the package scanning and manifest/security validation -- > these are where the big time is spent in Android boot time > (in a cold boot situation). > > These are, IMHO, more difficult to work on, but have the potential > for bigger impact (across a wider variety of platforms). > > In case people haven't seen it, there is some information at: > http://elinux.org/Android_Booting > > Just my 2 cents. > -- Tim > > ============================= > Tim Bird > Architecture Group Chair, CE Workgroup of the Linux Foundation > Senior Staff Engineer, Sony Network Entertainment > ============================= > > -- > unsubscribe: android-kernel+unsubscr...@googlegroups.com > website: http://groups.google.com/group/android-kernel > -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel
