Quick answers. 2 webapps one core/index each vs. 1 webapp with 2 cores (but there is also 1 webapp with 2 virtual webapps, one core/index each). If RAM is an issue, I'd think 1 webapp would be slightly gentler on your RAM.
Don't think you can search against multiple cores "automatically" - i.e. got to make multiple queries, one for each core and combine results yourself. Yes, this will slow things down. Otis -- Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch ----- Original Message ---- > From: David Pratt <[EMAIL PROTECTED]> > To: solr-user@lucene.apache.org > Sent: Monday, March 3, 2008 8:20:30 AM > Subject: multi core vs multi app > > I am trying to decide whether it is best to work with multiple apps in a > tomcat instance or run a single app with multiple cores. How do these > options compare in terms of impact on RAM requirements. > > Is anyone using the multicore in production to suggest whether it is > stable enough to use with replication scripts etc. Is there any sort of > a write up anywhere of how one could perform a search across multiple > cores within the single app? Not sure about efficiency of something like > though compared to merging indexes periodically to search across the > merged index instead. It would seem that a search across multiple cores > would add slowness even if this is doable. Any advice appreciated. Many > thanks. > > Regards, > David >