Re: performance during index switch

2011-01-19 Thread Jonathan Rochkind
On 1/19/2011 2:56 PM, Tri Nguyen wrote: Yes, during a commit. I'm planning to do as you suggested, having a master do the indexing and replicating the index to a slave which leads to my next questions. During the slave replicates the index files from the master, how does it impact performan

Re: performance during index switch

2011-01-19 Thread Otis Gospodnetic
/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/ - Original Message > From: Tri Nguyen > To: solr-user@lucene.apache.org > Sent: Wed, January 19, 2011 2:56:58 PM > Subject: Re: performance during index switch > > Yes, during a commit. >

Re: performance during index switch

2011-01-19 Thread Tri Nguyen
1/19/11, Jonathan Rochkind wrote: From: Jonathan Rochkind Subject: Re: performance during index switch To: "solr-user@lucene.apache.org" Date: Wednesday, January 19, 2011, 11:30 AM During commit? A commit (and especially an optimize) can be expensive in terms of both CPU and RA

Re: performance during index switch

2011-01-19 Thread Markus Jelsma
> Hi, > > Are there performance issues during the index switch? What do you mean by index switch? > > As the size of index gets bigger, response time slows down? Are there any > studies on this? I haven't seen any studies as of yet but response time will slow down for some components. Sor

Re: performance during index switch

2011-01-19 Thread Jonathan Rochkind
During commit? A commit (and especially an optimize) can be expensive in terms of both CPU and RAM as your index grows larger, leaving less CPU for querying, and possibly less RAM which can cause Java GC slowdowns in some cases. A common suggestion is to use Solr replication to seperate out a