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From "Michael Celona" <mcel...@criticalmention.com>
Subject RE: Search Performance
Date Fri, 18 Feb 2005 20:48:09 GMT
I am using the highlighter... does this matter



-----Original Message-----
From: David Spencer [mailto:dave-lucene-user@tropo.com] 
Sent: Friday, February 18, 2005 2:05 PM
To: Lucene Users List
Subject: Re: Search Performance

Are you using the highlighter or doing anything non-trivial in 
displaying the results?

Are the pages being compressed (mod_gzip or some servlet equivalent)? 
This definitely helps, though to see the effect you may have to make 
sure your simulated users are "remote".

Also consider caching search results if it's reasonable to assume users 
may search for the same things.

I made some measurements on caching on my site:

http://www.searchmorph.com/weblog/index.php?id=41
http://www.searchmorph.com/weblog/index.php?id=40

And I use OSCache:

http://www.searchmorph.com/weblog/index.php?id=38
http://www.opensymphony.com/oscache/





Michael Celona wrote:

> What is single handedly the best way to improve search performance?  I
have
> an index in the 2G range stored on the local file system of the searcher.
> Under a load test of 5 simultaneous users my average search time is ~4700
> ms.  Under a load test of 10 simultaneous users my average search time is
> ~10000 ms.    I have given the JVM 2G of memory and am a using a dual 3GHz
> Zeons.  Any ideas?  
> 
>  
> 
> Michael
> 
> 


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