Re: dmesg verbosity [was Re: AGP bogosities]

Dave Jones
2005-03-23T17:24:28Z

On Wed, Mar 23, 2005 at 05:49:47PM +0100, Giuseppe Bilotta wrote:
> > > What are the cons of using "all of" the RAM at boot time to
> > > cache the boot disk?
>
> Dave Jones wrote:
> > It's memory that's otherwise unused. Once you start using the system
> > anything cached will get reclaimed as its needed.
>
> So there is no substantial loss? IOW, it would suffice to have
> all the "loaded at boot" stuff in the first <amount of RAM>
> bytes of the hard disk?

It very likely also needs to be contiguous on-disk (Ie, no in-file
fragmentation). You want to limit the amount of seeking that gets
done so the drive readahead just performs continuous reads.

Dave