Is there a way to clear lucene's cache?

[S L <so...@gmail.com>]

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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Re: Is there a way to clear lucene's cache?

[S L <so...@gmail.com>]

p.s. And thanks for the tip on flushing the OS-level cache.



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Re: Is there a way to clear lucene's cache?

[S L <so...@gmail.com>]

Yes, I meant solr. My bad. Thanks.



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Re: Is there a way to clear lucene's cache?

[Michael McCandless <lu...@mikemccandless.com>]

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 <so...@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.
>
>
>
> --
> View this message in context: http://lucene.472066.n3.nabble.com/Is-there-a-way-to-clear-lucene-s-cache-tp4030059.html
> Sent from the Lucene - General mailing list archive at Nabble.com.