Lucene itself doesn't do any caching.  Maybe you are thinking of Solr?

The OS also does caching, so if you want a "cold" test you'll have to
tell the OS to flush its IO cache in between tests.  EG on Linux do
"sudo echo 3 > /proc/sys/vm/drop_caches".

Mike McCandless

http://blog.mikemccandless.com

On Wed, Jan 2, 2013 at 10:39 AM, S L <sol.leder...@gmail.com> wrote:
> I'm doing some performance testing and caching is not helpful for the tests.
> Is there a way to clear lucene's query cache between rounds of tests? I've
> tried restarting tomcat but that doesn't help.
>
> Thanks.
>
>
>
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