This is consistent with my experience. DocValues is faster for the first call (compared to UnInvertedField, which is what is used when there are no DocValues), but is slower on subsequent calls.
I'm curious as to this as well, since I haven't heard anyone else before you also mention this. I thought maybe I was the only one... -Michael -----Original Message----- From: lei [mailto:simpl...@gmail.com] Sent: Thursday, March 05, 2015 2:40 PM To: solr-user@lucene.apache.org Subject: Re: Performance on faceting using docValues Here is the specs of some example query faceting on three fields (all string type): first call: 1+ sec (with docValues) vs. 4+ sec (w/o docValues) subsequent calls: 30+ ms (with docValues) vs. 100+ ms (w/o docValues) consistently the total # of docs returned is around 600,000 On Thu, Mar 5, 2015 at 11:18 AM, lei <simpl...@gmail.com> wrote: > Hi there, > > I'm testing facet performance with vs without docValues in Solr 4.7, > and found that on first request, performance with docValues is much > faster than non-docValues. However, for subsequent requests (where the > queries are cached), the performance is slower for docValues than > non-docValues. Is this an expected behavior? Any idea or solution is > appreciated. Thanks. >
