For your fields with many terms you may want to try Bobo http://code.google.com/p/bobo-browse/ which could work well with your case.
On Wed, Aug 12, 2009 at 12:02 PM, Fuad Efendi<f...@efendi.ca> wrote: > I am currently faceting on tokenized multi-valued field at > http://www.tokenizer.org (25 mlns simple docs) > > It uses some home-made quick fixes similar to SOLR-475 (SOLR-711) and > non-synchronized cache (similar to LingPipe's FastCache, SOLR-665, SOLR-667) > > Average "faceting" on query results: 0.2 - 0.3 seconds; without those > patches - 20-50 seconds. > > I am going to upgrade to SOLR-1.4 from trunk (with SOLR-475 & SOLR-667) and > to compare results... > > > > > P.S. > Avoid faceting on a field with heavy distribution of terms (such as few > millions of terms in my case); It won't work in SOLR 1.3. > > TIP: use non-tokenized single-valued field for faceting, such as > non-tokenized "country" field. > > > > P.P.S. > Would be nice to load/stress > http://alias-i.com/lingpipe/docs/api/com/aliasi/util/FastCache.html against > putting CPU in a spin loop ConcurrentHashMap. > > > > -----Original Message----- > From: Erik Hatcher [mailto:ehatc...@apache.org] > Sent: August-12-09 2:12 PM > To: solr-user@lucene.apache.org > Subject: Re: facet performance tips > > 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 > > > >
