FIle and Block size relationships ...

[Ben Duncan]

Ok, another question ....

Should I make the POINTERS to blocks or make them the
actual lseek pointers?

What I mean, a reference pointer to a block address
would always be block number times 512 (my default page/block size)
versus the actual disk address ?

FWIW, all nodes (interior / leaf ) and data blocks will always be
a 512 byte page size ...

The difference is that I would have to use either 8 byte (64 bit addressing)
versus 4 byte (32 bit) times 512. The cost savings would be
using 32 bit times block would shave 4 bytes off my node layout for
each key/item pair but require CPU time to calc it ...

Thanks ...

Bill Campbell wrote:
> 
> Yup.  The block size is the minimum amount of space a file will
> take on disk.
> 
> As far as I know, this is pretty much any kind of file system.
> although it's not as noticeable on *nix file systems as it is on
> Microsoft DOS style file systems which have other limitations on
> the numbers of entries in FAT tables and such which makes things
> very ``intersting'' when dealing with large file systems where
> the block sizes get truly humongous.
> 
-- 
Ben Duncan   - Business Network Solutions, Inc. 336 Elton Road  Jackson MS, 39212
"Never attribute to malice, that which can be adequately explained by stupidity"
        - Hanlon's Razor