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From "Julien Nioche" <Julien.Nio...@lingway.com>
Subject Re: Performance: compound vs. multi-file index, indexing and searching
Date Thu, 10 Jun 2004 13:29:45 GMT
Has anyone tried comparing the performance of regular (multi-file) indexing
and specifying a value for minMergeDocs?
Using parameter limits the number of files and is supposed to improve the
speed of indexation.

----- Original Message ----- 
From: "Otis Gospodnetic" <otis_gospodnetic@yahoo.com>
To: "Lucene Users List" <lucene-user@jakarta.apache.org>
Sent: Thursday, June 10, 2004 12:41 PM
Subject: Re: Performance: compound vs. multi-file index, indexing and
searching


> I haven't tested the two in a multi-threaded setup, but my
> single-threaded unit test now clearly shows that there _is_ a
> consistent indexing performance difference between the two index
> structures.  The multi-file structure seems to beat the compound index
> structure by about 7% in my tests, which matches Hui's report, and what
> I thought unit tests would show.
>
> Hui used Lucene 1.3, and I used the latest RC, and the results are
> about the same.
>
> Otis
>
> --- Doug Cutting <cutting@apache.org> wrote:
> > Otis Gospodnetic wrote:
> > > Can anyone comment on performance differences?
> >
> > I'd expect multi-threaded performance to be a bit worse with the
> > compound format, but single-threaded performance should be nearly
> > identical.
>
>
> =====
> http://www.simpy.com/ - social bookmarking and personal search engine
>
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