On Mon, Apr 1, 2013 at 1:56 PM, Arun Kumar K <arunk...@gmail.com> wrote: > Hi Guys,
Hi, > I have been finding out the heap space requirement for indexing and > searching with 3.0.2 vs 4.1 (with BlockPostings Format). > > I have a 2GB index with 1 million docs with around 42 fields with 40 fields > being random strings. > > I have seen that memory for search has reduced by 5X with 4.1 (with > BlockPostings Format) but the memory usage during indexing with 4.1 is > around 800MB~1.7 GB whereas for 3.0.2 it is 300~600MB. > But indexing time is almost same with both versions. How did you measure memory usage ? Operating systems may report high memory usage because MMapDirectory became the new default directory implementation and memory-mapped files are taken into account in the virtual memory of your processes. See http://blog.thetaphi.de/2012/07/use-lucenes-mmapdirectory-on-64bit.html for more information. -- Adrien --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
