lucenenet-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jeff Rodenburg" <jeff.rodenb...@gmail.com>
Subject Re: Lucene.Net Indexing Large Databases
Date Mon, 11 Sep 2006 15:10:48 GMT
Hi George -

About a year ago we had a memory leak around some issues with the
1.4.3code.  A few of us wrote some sample programs that manifested the
error, but
I was able to do a fair amount of sleuthing with Memprofiler (
http://memprofiler.com/).  It's a pretty good tool for $100.

-- j

On 9/10/06, George Aroush <george@aroush.net> wrote:
>
> Hi Folks,
>
> Since last weekend, I have been trying to narrow down the problem to this
> memory leak without much of a luck.
>
> Does anyone have a tool (or could recommend one, without costing me $$)
> which hopefully show the source of the leak?
>
> Unlike C++ code, the leak here, obviously, is due to not releasing
> references to temporary or real objects.  The trick is finding the object.
>
> This leak can be created with this simple code:
>
>         public static void  Main(System.String[] args)
>         {
>                 IndexWriter diskIndex;
>                 Directory   directory;
>                 Analyzer    analyzer;
>                 Document    doc;
>                 int         count;
>                 string      indexDirectory;
>                 System.IO.FileInfo  fi;
>
>                 indexDirectory = "C:\\Index.Bad";
>
>                 fi = new System.IO.FileInfo(indexDirectory);
>                 directory = Lucene.Net.Store.FSDirectory.GetDirectory(fi,
> true);
>
>                 analyzer = new SimpleAnalyzer();
>                 diskIndex = new IndexWriter(directory, analyzer, true);
>
>                 count = 0;
>                 while (count < 10000)
>                 {
>                         doc = new Document();
>                         diskIndex.AddDocument(doc);
>                         count++;
>                 }
>
>                 diskIndex.Close();
>         }
>
> This code will show a leak in 1.9, 1.9.1 and 2.0 but not 1.4.3.  I also
> verified and it doesn't leak under the Java version of Lucene (2.0 is
> where
> I tested.)
>
> Regards,
>
> -- George
>
>
> -----Original Message-----
> From: George Aroush [mailto:george@aroush.net]
> Sent: Friday, September 01, 2006 9:21 PM
> To: lucene-net-user@incubator.apache.org
> Subject: RE: Lucene.Net Indexing Large Databases
>
> Hi Chris,
>
> I am using 1.9.1 in production and I am not having this problem.  Sorry, I
> don't have enough cycles to try your code on 1.9.
>
> This problem was reported on 1.4.x and was fixed.  I am sure I carried it
> over to 1.9.x and 2.0 -- or maybe this is a new issue.  I will double
> check
> when I get the cycles.
>
> You can get 1.4.3's source code as ZIP from the download site of
> Lucene.Net
> which is here:
> https://svn.apache.org/repos/asf/incubator/lucene.net/site/download/ or
> you
> can SVN the source code from here:
> https://svn.apache.org/repos/asf/incubator/lucene.net/tags/
>
> Regards,
>
> -- George Aroush
>
>
> -----Original Message-----
> From: Chris David [mailto:chris@snapstream.com]
> Sent: Friday, September 01, 2006 1:46 PM
> To: lucene-net-user@incubator.apache.org
> Subject: RE: Lucene.Net Indexing Large Databases
>
> Thanks René, so its not just me with this problem.  Now where can I get a
> hold of this wonderful 1.4 Build of Lucene.  Its not listed directly on
> Apache's Lucene.NET Page. I am anxious to see if my code actually does
> work.
> Thanks again for all your help, I really do appreciate it.
>
> Chris
> Snapstream Media
> -----Original Message-----
> From: René de Vries [mailto:rene.de.vries@howardshome.com]
> Sent: Friday, September 01, 2006 7:32 AM
> To: lucene-net-user@incubator.apache.org
> Subject: RE: Lucene.Net Indexing Large Databases
>
> Update: I didn't realize my earlier code example ran against 1.4.
>
> If I run this with 1.9final-005 build, I am experiencing the exact same
> problems as Chris mentions. Memory consumtion keeps growing, I had to kill
> it at 1.5Gb. Exact same code, but with a 1.4 version of the lucene.netDLL,
> and it runs along at 50Mb
>
> René
>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message