[Xapian-discuss] 1.2.2/3 performance issue

[Markus Wörle]

Am 31.08.2010 um 15:04 schrieb 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.

It's a x86-64 linux on a Xeon (X5450) based system. I tried it anyway, but --disable-sse did not change anything.