How do you measure memory consumption? If you pass -1 for the divisor do you still see no difference?
Can you post the output of CheckIndex on your index? Are you sure your index has no deletions? Mike On Thu, Dec 3, 2009 at 5:55 AM, Ganesh <emailg...@yahoo.co.in> wrote: > I don't have norms, I don't delete docs using IndexReader. I have switched > off sorting. I think fieldcache is used for sorting. > I am just loading all the index with different values and calculating the > memory difference. > > I am having 100 million records splitted across database. I loaded all the > database with index divisor value 1000, 5000, and 10000 and the memory > consumption seems to be same. > > Regards > Ganesh > > ----- Original Message ----- > From: "Michael McCandless" <luc...@mikemccandless.com> > To: <java-user@lucene.apache.org> > Sent: Thursday, December 03, 2009 4:09 PM > Subject: Re: IndexDivisor > > > That's indeed how index divisor works, so, the memory difference > should be 100X lower, for just the RAM consumed by the terms index. > > Other things consume RAM (norms, deleted docs, field cache), so maybe > those are messing up your measurements? > > Mike > > On Fri, Nov 27, 2009 at 5:30 AM, Danil ŢORIN <torin...@gmail.com> wrote: >> Try to open with very large value (MAX_INT) it will load only first >> term, and look up the rest from disk. >> >> On Fri, Nov 27, 2009 at 12:24, Michael McCandless >> <luc...@mikemccandless.com> wrote: >>> If you are absolutely certain you won't be doing any lookups by term. >>> >>> The only use case I know of is internal, when Lucene's SegmentMerger >>> is merging the segment with other segments. In this case, the merger >>> does a linear iteration of all terms, and never a lookup by term, so >>> we save CPU/RAM by not loading the terms index. >>> >>> Mike >>> >>> On Fri, Nov 27, 2009 at 5:16 AM, Ganesh <emailg...@yahoo.co.in> wrote: >>>> Thanks, >>>> >>>> May i know the purpose of using negative value? >>>> >>>> Regards >>>> Ganesh >>>> >>>> ----- Original Message ----- >>>> From: "Michael McCandless" <luc...@mikemccandless.com> >>>> To: <java-user@lucene.apache.org> >>>> Sent: Friday, November 27, 2009 3:17 PM >>>> Subject: Re: IndexDivisor >>>> >>>> >>>>> This is the expected behavior. >>>>> >>>>> If you intend to use the reader for searching, looking doc freq, >>>>> deleting docs, etc, you must pass a non-negative value for >>>>> indexDivisor. >>>>> >>>>> Mike >>>>> >>>>> On Fri, Nov 27, 2009 at 12:00 AM, Ganesh <emailg...@yahoo.co.in> wrote: >>>>>> Hello all, >>>>>> >>>>>> I am using Lucene v2.9.1, If I open my reader with positive value for >>>>>> termInfosIndexDivisor then the search works fine. If i set to -1, then >>>>>> search throws exception "terms index was not loaded when this reader was >>>>>> created". Is this the intend behaviour? >>>>>> >>>>>> I thought by setting this value to -1, No memory will be used and the >>>>>> terms will be fetched from the disk. Search might be slow but with very >>>>>> less memory consumption. >>>>>> >>>>>> Regards >>>>>> Ganesh >>>>>> 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 >>>>>> >>>>>> >>>>> >>>>> --------------------------------------------------------------------- >>>>> 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 >>>> >>>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>> >>> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> > > --------------------------------------------------------------------- > 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 > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
