Re: [HACKERS] char types gone.

> > Yes, but if they are never referenced, the cache is empty for those
> > types.  Unless there is some performance change with their removal, why
> > remove them?  Disk space of binary?
> 
> How does the cache really work then?  Does one pg disk block map to one buffer?
> 
> When you say "the cache is empty for those types.", what do you mean?

I believe the buffer page cache does load in those types if they are in
the same page as a requsted type, but the relation/function caches only
store in requested relations/functions, as far as I know.

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