About the search 'referal_url:*www.someurl.com*', having a wildcard at the start will cause a dictionary scan for every term you search on unless you use ReversedWildcardFilterFactory. That could be the cause of your slowdown if you are I/O bound, and even if you are CPU bound for that matter.
François On Jan 8, 2012, at 8:44 PM, yu shen wrote: > Hi, > > My solr document has up to 20 fields, containing data from product name, > date, url etc. > > The volume of documents is around 1.5m. > > My symptom is when doing url search like [ url:*www.someurl.com* > referal_url:*www.someurl.com* page_url:*www.someurl.com*] will get a > extraordinary long response time, while search against all other fields, > the response time will be normal. > > Can anyone share any insights on this? > > Spark