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From "Terry Steichen" <te...@net-frame.com>
Subject Re: Sys properties Was: java.io.tmpdir as lock dir .... once again
Date Mon, 08 Mar 2004 19:44:32 GMT
I tend to agree (but with the same uncertainty as to why I feel that way).

Regards,

Terry
----- Original Message ----- 
From: "Otis Gospodnetic" <otis_gospodnetic@yahoo.com>
To: "Lucene Users List" <lucene-user@jakarta.apache.org>
Sent: Monday, March 08, 2004 2:34 PM
Subject: Re: Sys properties Was: java.io.tmpdir as lock dir .... once again


> I can't explain why, but I feel like the old index format should stay
> by default.  I feel like I'd rather a (slightly) faster index, and
> switch to the compound one when/IF I encounter problems, than have a
> safer, but slower index, and never realize that there is a faster
> option available.
> 
> Weak argument, I know, but some instinct in me thinks that the current
> mode should remain.
> 
> Otis
> 
> 
> --- Doug Cutting <cutting@apache.org> wrote:
> > hui wrote:
> > > Index time: 
> > > compound format is 89 seconds slower.
> > > 
> > > compound format:
> > > 1389507 total milliseconds
> > > non-compound format:
> > > 1300534 total milliseconds
> > > 
> > > The index size is 85m with 4 fields only. The files are stored in
> > the index.
> > > The compound format has only 3 files and the other has 13 files. 
> > 
> > Thanks for performing this benchmark!
> > 
> > It looks like the compound format is around 7% slower when indexing. 
> > To 
> > my thinking that's acceptable, given the dramatic reduction in file 
> > handles.  If folks really need maximal indexing performance, then
> > they 
> > can explicitly disable the compound format.
> > 
> > Would anyone object to making compound format the default for Lucene 
> > 1.4?  This is an incompatible change, but I don't think it should
> > break 
> > applications.
> > 
> > Doug
> > 
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> 
> 
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