Thanks mike. I am opening the reader and warming it up and then calculating the memory consumed. long usedMemory = runtime.totalMemory() - runtime.freeMemory();
Regards Ganesh ----- Original Message ----- From: "Michael McCandless" <luc...@mikemccandless.com> To: <java-user@lucene.apache.org> Sent: Thursday, December 03, 2009 6:22 PM Subject: Re: IndexDivisor On Thu, Dec 3, 2009 at 7:15 AM, Ganesh <emailg...@yahoo.co.in> wrote: > Below are my stats > IndexDivisor Memory > -1 7 MB > 1 486 MB > 100 180 MB > 1000 176 MB. Do you simply create the IndexWriter & IndexReader, but do no searching/indexing? How are you measuring RAM? You should use a RAM profiler (eg YourKit) to get the "real" usage, not counting garbage that's yet to be collected. My guess is the shear process of Lucene scanning your terms index creates lots of garbage and you're measuring the RAM consumed by that garbage. The garbage should be harmless (it'll eventually get GCd & reused). > 1. Whether term vector will consume RAM. I think it should only consume disk > space. No RAM is consumed. > 2. By setting RAM buffer for IW, Does it will allocate memory Or based on the > usage the memory will be allocated / increased. Only a little RAM is allocated up front, I think. It's only as you start indexing docs that the big RAM is really allocated. After a flush the RAM is then reused (ie, not freed) for subsequent segments. Mike --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org Send instant messages to your online friends http://in.messenger.yahoo.com --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
