Messages in this thread | | | Date | Wed, 23 Mar 2005 12:17:23 -0500 | From | Dave Jones <> | Subject | Re: dmesg verbosity [was Re: AGP bogosities] |
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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
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