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From "Pete Lewis" <p...@uptima.co.uk>
Subject Re: What is the best file system for Lucene?
Date Tue, 30 Nov 2004 12:07:46 GMT
Hi Sanyi

Could you try XP on your desktop - that would take some variables out.  The
problem is that you are comparing OS, as well as filesystems, as well as
different hardware configs.

Also, unless you take your hyperthreading off, with just one index you are
searching with just one half of the CPU - so your desktop is actually using
a 1.5GHz CPU for the search.  So, taking account of this its not too
surprising that they are searching at comparable speeds.....

HTH
Pete

----- Original Message ----- 
From: "Sanyi" <need4sid@yahoo.com>
To: "Lucene Users List" <lucene-user@jakarta.apache.org>
Sent: Tuesday, November 30, 2004 11:28 AM
Subject: Re: What is the best file system for Lucene?


> > Interesting, what are your merge settings
>
> Sorry, I didn't mention that I was talking about search performance.
> I'm using the same, fully optimized index on both systems.
> (I've generated both indexes with the same code from the same database on
the actual OS)
>
> > which JDK are you using?
>
> I'm using the same Sun JDK on both systems.
> I've tried so far:
> j2sdk1.4.2_04 _05 and _06.
> I didn't notice speed differences between these subversions.
> Do you know about significant speed differences between them I should
notice?
>
> > Have you tried with hyperthreading turned off on #2?
>
> No, but I will try it if the problem isn't in the file system.
> I hope that the reason of slowness is reiserfs, because it is the easiest
to change.
>
> What file systems are you people using Lucene on? And what are your
experiences?
>
> Regards,
> Sanyi
>
>
>
>
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