[LinuxBIOS] filo ide speedup patch!
stuge-linuxbios at cdy.org
Sat Apr 7 11:52:20 CEST 2007
On Sat, Apr 07, 2007 at 11:09:46AM +0200, Stefan Reinauer wrote:
> * Peter Stuge <stuge-linuxbios at cdy.org> [070407 05:34]:
> > There's a simple but good enough sector cache in read_sector()
> > that gets used here so this is not a problem.
> Can we enhance this and use it for loading the kernel too
> ("readahead") so we don't have to patch all filesystems?
Yes, but it would be difficult to find a good compromise between
cache size and load time. Ward's kernel was in two chunks. My
kernel is in 15 chunks.
Also, unless the filesystem caches needed metadata (journal)
internally, every journal read will cause a cache miss and refill. :\
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