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From Mike Klaas <mike.kl...@gmail.com>
Subject Re: [jira] Created: (LUCENE-1195) Performance improvement for TermInfosReader
Date Tue, 26 Feb 2008 23:53:54 GMT

On 26-Feb-08, at 3:00 PM, Michael Busch (JIRA) wrote:
>
> 50,000 AND queries with 3 terms each:
> old:                  152 secs
> new (with LRU cache): 112 secs (26% faster)
>
> 50,000 OR queries with 3 terms each:
> old:                  175 secs
> new (with LRU cache): 133 secs (24% faster)
>
> For bigger indexes this patch will probably have less impact, for  
> smaller once more.

Wow -- term lookup occupied 50% of the query execution time?!  How  
many documents matched these queries?

-Mike

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