[Xapian-discuss] Xapian performance and xapian-python

[QE :: Felix Ostmann]

2012/6/28 Olly Betts <olly at survex.com>

> On Thu, Jun 28, 2012 at 11:50:56AM +0000, Patrick Oliver Glauner wrote:
> > But I would like to refer to my original third question which is really
> important for us:
> > > Question 3
> > >How come that the Xapian time consumption is almost independent from
> > >RANKED_RESULT_AMOUNT?
> > > If I increase it to 10000, the wall time is still nearly the same.
>

Are the results from xapian and solr the same? Same amount? Same max?



>
> I don't know what's going on yet, so I can't really answer this.  If
> that patch had slashed the time taken, I could have told you why...
>
> I'm very surprised if it doesn't make a difference in a case like this
> - are you totally sure you're actually testing the patched version?
>
> > Is this the way Xapian is supposed to behave? In most of our use cases
> > RANKED_RESULT_AMOUNT is quite small (<100) and we need to get these
> > ranked results as fast as possible.
>
> Asking for fewer results means less work, so should indeed be faster.
> How much so depends on the documents, the query, and other Enquire
> settings.
>
> Profile data would certainly be useful.
>
> Cheers,
>    Olly
>
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