I read the lucene in action book and just tested the
FSversusRAMDirectoryTest.java with the following uncommented:
///**
//// change to adjust performance of indexing with FSDirectory
writer.mergeFactor = 100;
writer.maxMergeDocs = 99;
writer.minM
This test is very old (from the 1st edition of the book but removed
from the 2nd).
Modern OS's cache newly written files in RAM, and this test doesn't
write very large files (I think?), so the test is really testing an
OS's IO cache vs Lucene's RAM Dir.
That said, I'm not sure why RAMDir would be
.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: u...@thetaphi.de
> -Original Message-
> From: Michael McCandless [mailto:luc...@mikemccandless.com]
> Sent: Monday, June 06, 2011 5:58 PM
> To: java-user@lucene.apache.org
> Subject: Re: RAMDirectory doesn&#
-
From: Uwe Schindler [mailto:u...@thetaphi.de]
Sent: Tuesday, June 07, 2011 12:04 AM
To: java-user@lucene.apache.org
Subject: RE: RAMDirectory doesn't win over FSDirectory all the time, why?
Hi,
It depends on the Lucene version, so if the test uses latest Lucene on a
64bit OS, it ma
On Mon, 2011-06-06 at 15:29 +0200, zhoucheng2008 wrote:
> I read the lucene in action book and just tested the
> FSversusRAMDirectoryTest.java with the following uncommented:
> [...]Here is the output:
>
> RAMDirectory Time: 805 ms
>
> FSDirectory Time : 728 ms
This is the code, right?
http://ja
Makes sense. Thanks
-Original Message-
From: Toke Eskildsen [mailto:t...@statsbiblioteket.dk]
Sent: Tuesday, June 07, 2011 4:28 PM
To: java-user@lucene.apache.org
Subject: Re: RAMDirectory doesn't win over FSDirectory all the time, why?
On Mon, 2011-06-06 at 15:29 +0200, zhouchen
> To: java-user@lucene.apache.org
> Subject: Re: RAMDirectory doesn't win over FSDirectory all the time, why?
>
> On Mon, 2011-06-06 at 15:29 +0200, zhoucheng2008 wrote:
>> I read the lucene in action book and just tested the
>> FSversusRAMDirectoryTest.java with the follo
dex stuff is more what you want?
>
> Lance
>
> On Tue, Jun 7, 2011 at 2:52 AM, zhoucheng2008 wrote:
>> Makes sense. Thanks
>>
>> -Original Message-
>> From: Toke Eskildsen [mailto:t...@statsbiblioteket.dk]
>> Sent: Tuesday, June 07, 2011 4:28 PM
&g
