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From Ian Lea <>
Subject Re: Memory Usage?
Date Thu, 08 Nov 2001 21:00:16 GMT
For what it is worth I've got an index with 1.6 million
small entries, taking up 350Mb of disk space, and have
a long running server process handling search requests
against the index and memory usage is stable at 95Mb.
It has handled 425000+ mostly simple searches so far.
The index is optimized and the process reuses an IndexReader.


Anders Nielsen wrote:
> funny...I was just about to write something along the same lines..
> I have 700.000 entries, in all about 1 gig of data. And when I search I have
> to allocate at least 150meg to the java-process or it'll run out of memory.
> Could someone (most likely Doug) outline how much memory we can expect is
> necessary when searching? (big-Oh notation would be nice)
> regards,
> Anders Nielsen
> -----Original Message-----
> From: Scott Ganyo []
> Sent: 8. november 2001 21:30
> To: Lucene-Users (E-mail)
> Subject: Memory Usage?
> We're having problems with memory allocation (and thus garbage collection)
> that seem to be directly attributable to our heavy use of Lucene indexes.  I
> don't have a lot of data on this yet, but has anyone else seen this as an
> issue?  Is there any way that Lucene could be tuned to use less memory
> during searches?
> Thanks,
> Scott

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