Re: [Neo4j] Do you know how to clear cache in Neo4j?

[Michael Hunger]

Why would you want to clear the cache?

Cold / uncached performance is not what you aim for in production settings.

Michael

Am 08.02.2013 um 22:00 schrieb i28...@gmail.com:

Hi~~~

I have done some test for benchmarking purposes in Neo4j.

But, I got some different result because I didn't remove(clear) cache.

So, I have found a method about flushing cache 

"http://lists.neo4j.org/pipermail/user/2010-December/006049.html"

However, it is old version. 

To clear cache, what should I do?

Thanks a lot

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[jean caca]

He just told you why.

I'd be interested in knowing how to clear that cache as well, for the same purposes.

Thanks,

Jean

[Nigel Small]

I think Michael's question was more to ask why there is value in measuring uncached performance at all. In production, caches are typically in play and so the performance statistics for warm caches are far more useful for comparison purposes.

Nigel

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[Stefan Armbruster]

Neo4j Enterprise edition features JMX beans for NodeCache and
Relationship cache. These beans have a clear() method that clears the
respective cache, see
http://docs.neo4j.org/chunked/stable/jmx-mxbeans.html#jmx-cache-nodecache

/Stefan

[Xiaomei Zeng]