Thank you for your reply. One clarification, is the maxdocs the max docs in the set, or the matched docs from the set?
If there are 1000 docs and 19 of them match, is the maxdocs 1000, or 19? -- Andrew -----Original Message----- From: Erick Erickson [mailto:erickerick...@gmail.com] Sent: Sunday, November 20, 2011 8:10 PM To: solr-user@lucene.apache.org Subject: Re: Solr filterCache size settings... Each fq will create a bitmap that is bounded by (maxdocs / 8) bytes. You can think of the entries in the fiterCache as a map where the key is the filter query you specify and the value is the aforementioned bitmap. The number of entries specified in the config file is the number of entries in that map. So the cache can take up roughly (assuming the size if 512) 512 * maxDocs / 8 bytes. Best Erick On Fri, Nov 18, 2011 at 6:49 PM, Andrew Lundgren <lundg...@familysearch.org> wrote: > I am new to solr in general and trying to get a handle on the memory > requirements for caching. Specifically I am looking at the filterCache > right now. The documentation on size setting seems to indicate that it is > the number of values to be cached. Did I read that correctly, or is it > really the amount of memory that will be set aside for the cache? > > How do you determine how much cache each fq will consume? > > Thank you! > > -- > Andrew Lundgren > lundg...@familysearch.org > > > NOTICE: This email message is for the sole use of the intended recipient(s) > and may contain confidential and privileged information. Any unauthorized > review, use, disclosure or distribution is prohibited. If you are not the > intended recipient, please contact the sender by reply email and destroy all > copies of the original message. > > >
