Ramdirectory is no longer an interesting technique for this. It makes garbage collection do a lot of work. With memory-mapped directory the data is cached by the OS instead of Java, and OS is very good at this.
TieredMergePolicy is much smarter about time spent merging segments. Lucene In Action 2 might be more help than a 6-year-old book :) On Mon, Jun 4, 2012 at 12:47 AM, Maxim Terletsky <sx...@yahoo.com> wrote: > Hi guys, > There are two approaches I see in Lucene In Action about speeding up the > indexing process. > > 1) Simply increase the mergeFactor and RAMBufferSizeMB. > 2) Using RAMDirectory as a buffer (perhaps even several in parallel) and > later merging it using addIndexes to FSDirectory. > > So my question is the following: > In case I have only 1 thread with RAMDirectory - is that pretty much the same > as method 1? Since it's in memory anyhow for large mergeFactor and large > RAMBufferSizeMB. > > Maxim > > > ________________________________ -- Lance Norskog goks...@gmail.com --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
