[LinuxBIOS] Boot Time
tyson at irobot.com
Tue Apr 5 19:05:14 CEST 2005
Jun OKAJIMA wrote:
> I understand one of the biggest merits of LinuxBIOS is fast booting.
> Then, how fast it is? The top page of the Wiki says 3 sec,
> and "7/25/01: Dual Athlon update " issue says about 2 sec to
> boot a kernel. But this log shows it took 20 sec.
The dominant factors are device driver init/probing and starting
services. Thus, boot time will be very dependent on system
configuration. For the the 3 second example I booted to a shell prompt
using an initrd image, serial console and not much else. Most real
systems are going to take a fair bit longer than that.
The main difference w/linuxbios is that the kernel is loaded and running
in under 1 second vs. 10-50 seconds for a COTS bios. How fast things go
once the kernel is booted is up to you.
Tyson D Sawyer iRobot Corporation
Lead Systems Engineer Government & Industrial Robotics
tsawyer at irobot.com Robots for the Real World
781-345-0200 ext 3329 http://www.irobot.com
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