Mailing List Archive: Memory question

Mailing List Archive: Lucene: Java-User
Memory question

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chris.bamford at talktalk

May 15, 2012, 7:47 AM

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Memory question

Hi

Can anyone tell me what happens to the memory when Lucene opens an index? Is it loaded into the JVM's heap or is it mapped into virtual memory outside of it?
I am running on Linux and if I use pmap on the PID of my JVM, I can see lots of entries for index cfs files.

Does this mean that indexes are mapped into non-heap memory? If so, how can I monitor the space my process is using if I cache open IndexSearchers?

The details are:

Sun 64-bit JVM on Linux.
Lucene 3.6 running in 2.3 compatibility mode (as we are in the in the process of a migration to 3.6)

Thanks,

- Chris

Subject	User	Time
Memory question	chris.bamford at talktalk	May 15, 2012, 7:47 AM
RE: Memory question	LFechner at hubwoo	May 15, 2012, 7:51 AM
Re: Memory question	ian.lea at gmail	May 15, 2012, 8:19 AM
RE: Memory question	uwe at thetaphi	May 15, 2012, 10:10 AM
Re: RE: Memory question	chris.bamford at talktalk	May 15, 2012, 12:38 PM
Re: Memory question	john.nader at cengage	May 15, 2012, 1:12 PM
Re: Memory question	chris.bamford at talktalk	May 15, 2012, 2:38 PM
Re: Memory question	sean.bridges at gmail	May 15, 2012, 10:00 PM
RE: Memory question	LFechner at hubwoo	May 15, 2012, 3:32 PM
Re: Memory question	lucene_list at iconparc	May 16, 2012, 12:11 AM
Re: Memory question	john.nader at cengage	May 16, 2012, 8:27 AM
Re: Memory question	chris.bamford at talktalk	May 16, 2012, 9:00 AM
Re: Memory question	chris at bammers	May 21, 2012, 9:49 AM

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