Hi Tikitu, Re 1. and filer cache size + eviction monitoring, here is an example: https://apps.sematext.com/spm-reports/s/b5g0cSyGm0
Otis -- Performance Monitoring * Log Analytics * Search Analytics Solr & Elasticsearch Support * http://sematext.com/ On Monday, January 27, 2014 5:03:47 PM UTC-5, Tikitu de Jager wrote: > > Hi folks, > > I'm optimising our queries based on the advice in Zachary Tong's > presentation: > https://speakerdeck.com/polyfractal/elasticsearch-query-optimization > So far just switching all our query elements to filters has given a 6x > speedup on a monster query (65Kchars of compact json), which is very > encouraging :-) > > All our queries are auto-generated from our own query syntax, though, so > if we switch to filters it's gonna have to be pretty much across the board > (all terminals in the query AST, or all boolean nodes, or some similarly > blunt instrument). Which makes me worry about cache churn. > > Actually I have two questions: > > 1. Can I monitor the *filter* cache size and eviction rate somehow? (REST > for preference, but jmx would be fine too.) I only seem to see > documentation for the field data cache. > > 2. Any advice for caching/not caching the intermediate boolean nodes in a > complex query? In our case many of these intermediate nodes *will* recur > in other queries, so my default feeling is to cache them, but that has to > be balanced against the extra cache usage (and risk of churn). So I guess > the question is, just how fast is the bitset bool filter (we frequently > have ANDs and ORs with 10 to 20 children) compared to caching the node? > Should I even be considering caching these, or is the bitset combination > fast enough to make it a no-brainer? > > Cheers, > Tikitu > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/31df45d8-b8c0-4bc4-888c-9ea0800adc66%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
