[Xapian-discuss] 1.2.2/3 performance issue

[Olly Betts]

On Tue, Aug 31, 2010 at 02:25:52PM +0200, Markus Wörle wrote:
> Do have any idea yet what change from 1.2.0 to 1.2.2 could have been caused
> the slowdown?

If this is on x86 (not x86-64), then try running configure with
--disable-sse.

1.2.1 defaults to use SSE for floating point on x86 (rather than 387
instructions) which avoids issues with excess precision.  In my tests
SSE was actually faster, but I suppose that may vary between CPU models.

Cheers,
    Olly