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From "Gunther, Andrew" <>
Subject RE: facet optimizing
Date Thu, 01 Mar 2007 16:56:06 GMT
Back on facet optimizing again. 

Can someone post their magic formula for filterCache (Erik?)  We've hit
a plateau around 1.7mill docs and my response times have suffered when
filtering.  Have adjusted filtercache up and down all day but can't seem
to get a good handle on these values.  What does size actually correlate
to (number or named-values pairs in hashmap?)  Can adjusting JVM memory
on startup factor in any.



-----Original Message-----
From: Erik Hatcher [] 
Sent: Wednesday, February 07, 2007 5:08 PM
Subject: Re: facet optimizing

On Feb 7, 2007, at 4:42 PM, Yonik Seeley wrote:
> Solr relies on the filter cache for faceting, and if it's not big
> enough you're going to get a near 0% hit rate.  Check the statistics
> page and make sure there aren't any evictions after you do a query
> with facets.  If there are, make the cache larger.

Yonik - thanks!   I was too deep into other things to worry about the  
slowness of massive multiValued facets, mainly because I was going to  
use the mess of all those nasty values we have in typical library  
data to push back and have it cleaned up.  But, I just adjusted my  
filter cache settings and my responses went from 2000+ ms to 85 ms!   
Now it takes longer to render the pie charts than it does to get the  
results back :)


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