[Xapian-discuss] xapian performance

[Olly Betts]

On Mon, Nov 20, 2006 at 07:49:45AM +0000, Olly Betts wrote:
> So I think we're going to have to bump the format version of flint
> databases before 1.0.  I'll have a quick look at how feasible it is
> to update a database.

OK, this is a little bit fiddly I'm afraid...

You need to apply this patch to a copy of the xapian-core 0.9.9 sources
and then build them:

http://www.oligarchy.co.uk/xapian/patches/xapian-flint-updater.patch

Then the "xapian-compact" built in the "bin" subdirectory will actually
be a program to update flint databases from the "wrong" encoding to
the "right" one.

NB: this program modifies the database it works on, and I've only tested
it on one example, so make a copy to work on!

You need 0.9.9 with the 2 other patches from this thread applied to search
the updated database (it has a new flint revision).  Then you'll be able
to compare timings of 0.9.9 (possibly plus earlier patches) against the
original database compared to the fully patched 0.9.9 against the
updated one!

Cheers,
    Olly