Re: can we publish a aset interface?

Excerpts from Robert Haas's message of mar sep 07 10:13:12 -0400 2010:

> > I try to solve performance problems with czech tsearch. I checked
> > serialization and deserialization, but this decrease load time only to
> > 100ms (from 500) that is too much for us. After some gaming with mmap
> > I thinking so there some chance to preallocate mmap memory, and then
> > use a special memory context based on mmap instead of malloc.
> > Teoretically I can copy aset interface - this module probably never be
> > in core (this problem is probably local - only Czech), but it isn't
> > nice. So I asking.
> 
> I don't see how you could do anything with this that you can't do with
> the existing implementation.  It's not as if you can store pointers
> into an mmap'd block and then count on them being valid the next time
> you map the file...  it might not end up at the same offset.

Hmm, surely you could store offsets instead of absolute pointers.

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