Note that depending on the profile of your field (full text and how many unique terms on average per document), the improvements from 1.4 may not apply, as you may exceed the limits of the new faceting technique in Solr 1.4. -Stephen
On Wed, Aug 12, 2009 at 2:12 PM, Erik Hatcher <ehatc...@apache.org> wrote: > Yes, increasing the filterCache size will help with Solr 1.3 performance. > > Do note that trunk (soon Solr 1.4) has dramatically improved faceting > performance. > > Erik > > > On Aug 12, 2009, at 1:30 PM, Jérôme Etévé wrote: > > Hi everyone, >> >> I'm using some faceting on a solr index containing ~ 160K documents. >> I perform facets on multivalued string fields. The number of possible >> different values is quite large. >> >> Enabling facets degrades the performance by a factor 3. >> >> Because I'm using solr 1.3, I guess the facetting makes use of the >> filter cache to work. My filterCache is set >> to a size of 2048. I also noticed in my solr stats a very small ratio >> of cache hit (~ 0.01%). >> >> Can it be the reason why the faceting is slow? Does it make sense to >> increase the filterCache size so it matches more or less the number >> of different possible values for the faceted fields? Would that not >> make the memory usage explode? >> >> Thanks for your help ! >> >> -- >> Jerome Eteve. >> >> Chat with me live at http://www.eteve.net >> >> jer...@eteve.net >> > > -- Stephen Duncan Jr www.stephenduncanjr.com
