This is an old and long thread, and I no longer recall what the specific 
suggestions were.
My guess is this has to do with the OS cache of your index files.  When you 
make the large index update, that OS cache is useless (old files are gone, new 
ones are in) and the OS cache has get re-warmed and this takes time.

Are you optimizing your index before the update?  Do you *really* need to do 
that?
How large is your update, what makes it big, and could you make it smaller?

Otis
--
Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch



----- Original Message ----
> From: oleg_gnatovskiy <oleg_gnatovs...@citysearch.com>
> To: solr-user@lucene.apache.org
> Sent: Tuesday, January 20, 2009 6:19:46 PM
> Subject: Re: Query Performance while updating teh index
> 
> 
> Hello again. It seems that we are still having these problems. Queries take
> as long as 20 minutes to get back to their average response time after a
> large index update, so it doesn't seem like the problem is the 12 second
> autowarm time. Are there any more suggestions for things we can try? Taking
> our servers out of teh loop for as long as 20 minutes is a bit of a hassle,
> and a risk.
> -- 
> View this message in context: 
> http://www.nabble.com/Query-Performance-while-updating-the-index-tp20452835p21573927.html
> Sent from the Solr - User mailing list archive at Nabble.com.

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