fedora 8 boot up time

[Konstantin Svist]

Tim wrote:
> On Wed, 2007-11-14 at 20:45 +0000, Jose Celestino wrote:
>   
>> Remove more services?
>>     
>
> This touches one something I was thinking about earlier:  Granted that
> it's quicker not to start things you don't need.  Is it even quicker if
> you completely remove some services, so the system doesn't even have to
> both sorting through the list to find the ones it will start, and their
> starting/stopping order?
>   


The number of operations wasted on sorting services and checking which 
ones are enabled/disabled is more than likely negligible compared to the 
overall boot time.
The first rule of optimization is to work on the part that should yield 
the best improvement. Between using 1 CPU (even on multi-core systems) 
and taking up time with HD accesses, checking the services means pretty 
much nothing.

What *would* be really nice, though, is if the boot process could 
somehow read from flash drive(s) in parallel with the hard drive (in a 
sort of a RAID configuration) to speed up the normally slow-as-molasses 
HD reads/seeks.


You can see exactly what takes up the time on your system if you use 
bootchart: http://www.bootchart.org