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From prashant ullegaddi <prashullega...@gmail.com>
Subject Re: How to improve search time?
Date Tue, 04 Aug 2009 07:18:54 GMT
I did that as well. Actually, we had 32 indexes initially. We searched them.
It was even horrible.
After that I merged them into 4 indexes. And did the same. No gain!

Then, I had to merge 32 indexes into one.

On Tue, Aug 4, 2009 at 10:48 AM, Anshum <anshumg@gmail.com> wrote:

> Hi Prashant,
> 8 seconds as the minimum time is a little too much, though considering
> you're using just 4G of RAM its still ok.
> I would advice you to break your index into smaller indexes, perhaps
> selectively query the indexes (if that's possible for your application) and
> use a parallelmultisearcher. Its just something that you might try and
> like.
> All said and done, parallelizing would only get you a bell-curve like
> performance graph, so you'd have to figure out the sweet spot there.
>
> --
> Anshum Gupta
> Naukri Labs!
> http://ai-cafe.blogspot.com
>
> The facts expressed here belong to everybody, the opinions to me. The
> distinction is yours to draw............
>
>
> On Tue, Aug 4, 2009 at 10:08 AM, prashant ullegaddi <
> prashullegaddi@gmail.com> wrote:
>
> > I'm running it on Quadcore, 2.4GHz each, 4GB RAM.
> >
> > Prashant.
> >
> > On Tue, Aug 4, 2009 at 8:38 AM, Otis Gospodnetic <
> > otis_gospodnetic@yahoo.com
> > > wrote:
> >
> > > With such a large index be prepared to put it on a server with lots of
> > RAM
> > > (even if you follow all the tips from the Wiki).
> > > When reporting performance numbers, you really ought to tell us about
> > your
> > > hardware, types of queries, etc.
> > >
> > > Otis
> > > --
> > > Sematext is hiring -- http://sematext.com/about/jobs.html?mls
> > > Lucene, Solr, Nutch, Katta, Hadoop, HBase, UIMA, NLP, NER, IR
> > >
> > >
> > >
> > > ----- Original Message ----
> > > > From: prashant ullegaddi <prashullegaddi@gmail.com>
> > > > To: java-user@lucene.apache.org
> > > > Sent: Monday, August 3, 2009 12:33:46 AM
> > > > Subject: How to improve search time?
> > > >
> > > > Hi,
> > > >
> > > > I've a single index of size 87GB containing around 50M documents.
> When
> > I
> > > > search for any query,
> > > > best search time I observed was 8sec. And when query is expanded with
> > > > synonyms, search takes
> > > > minutes (~ 2-3min). Is there a better way to search so that overall
> > > search
> > > > time reduces?
> > > >
> > > > Thanks,
> > > > Prashant.
> > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > > For additional commands, e-mail: java-user-help@lucene.apache.org
> > >
> > >
> >
>

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