What's your facet.method? Have you tried setting it both ways?
http://wiki.apache.org/solr/SimpleFacetParameters#facet.method

Regards,
   Alex.
Personal blog: http://blog.outerthoughts.com/
LinkedIn: http://www.linkedin.com/in/alexandrerafalovitch
- Time is the quality of nature that keeps events from happening all
at once. Lately, it doesn't seem to be working.  (Anonymous  - via GTD
book)


On Wed, Apr 24, 2013 at 5:10 PM, Daniel Tyreus <dan...@webshots.com> wrote:
> We're testing SolrCloud 4.1 for NRT search over hundreds of millions of
> documents. I've been really impressed. The query performance is so much
> better than we were getting out of our database.
>
> With filter queries, we're able to get query times of less than 100ms under
> moderate load. That's amazing.
>
> My question today is on faceting. Let me give some examples to help make my
> point.
>
> *fq=state:California*
> numFound = 92193
> QTime = *80*
>
> *fq=state:Calforni*
> numFound = 0
> QTime = *8*
>
> *fq=state:California&facet=true&facet.field=city*
> numFound = 92193
> QTime = *1316*
>
> *fq=city:"San Francisco"&facet=true&facet.field=city*
> numFound = 1961
> QTime = *1477*
>
> *fq=state:Californi&facet=true&facet.field=city*
> numFound = 0
> QTime = *1380*
>
> So filtering is fast and faceting is slow, which is understandable.
>
> But why is it slow to generate facets on a result set of 0? Furthermore,
> why does it take the same amount of time to generate facets on a result set
> of 2000 as 100,000 documents?
>
> This leads me to believe that the FQ is being applied AFTER the facets are
> calculated on the whole data set. For my use case it would make a ton of
> sense to apply the FQ first and then facet. Is it possible to specify this
> behavior or do I need to get into the code and get my hands dirty?
>
> Best Regards,
> Daniel

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