Re: How to size document cache

2013-10-25 Thread Shawn Heisey
On 10/25/2013 7:48 AM, Erick Erickson wrote: > I hadn't thought about it before, but now I'm curious how > MMapDirectoryFactory plays into documentCache. Uwe, > are you listening? :) My _guess_ is that if you're using > MMapDirectoryFactory, the usefulness of the document > cache is lessened, kinda

Re: How to size document cache

2013-10-25 Thread Erick Erickson
I hadn't thought about it before, but now I'm curious how MMapDirectoryFactory plays into documentCache. Uwe, are you listening? :) My _guess_ is that if you're using MMapDirectoryFactory, the usefulness of the document cache is lessened, kinda. Since the documents are coming from essentially rand

How to size document cache

2013-10-25 Thread Matteo Grolla
Hi, I'd really appreciate if you could give me some help understanding how to tune the document cache. My thoughts: min values: max_results * max_concurrent_queries, as stated by http://wiki.apache.org/solr/SolrCaching how can I estimate max_concurrent_queries?