I'm experimenting with Kernel Preemption

[Rahul Sundaram]

Juan Carlos Castro y Castro wrote:

> (I posted this in fedora-list and Rahul Sundaram suggested I post it 
> here instead)
>
> Not on Fedora's kernel sources, but with 2.6.11ac7. I based my config 
> on /boot/config-2.6.11-1.14_FC3 and dealt with the additional options 
> with "make oldconfig". Then I browsed the configuration with "make 
> menuconfig", just for fun.
>
> I saw kernel preemption was turned off, so I turned on. Afterwards, I 
> notice the system is noticeably faster. Bootup is faster. Shutdown is 
> faster. The Red Hat manu on GNOME pops up WAY faster. OpenOffice.org 
> loading is faster. I suspect other things are faster too, but I'd have 
> to time them.
>
> So my question is: why isn't preemption enabled in the FC3 packaged 
> kernel? Does it conflict with something I haven't encountered yet? 
> maybe some esoteric hardware combination? My hardware data is below.
>
> Another thing: what crucial patch, if any, am I missing by using 
> 2.6.11ac7 instead of the FC3 packaged kernel? 



for the record, this has answered by Dave Jones on the fedora users list 
itself


regards
Rahul