# ElasticSearch slow/crashing **URL:** \ **Category:** Elasticsearch\ **Created:** [August 8, 2013, 2:55am UTC](https://discuss.elastic.co/t/elasticsearch-slow-crashing/13117 "2013-08-08T02:55:38Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![benmccann](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/benmccann/32/420_2.png) [@benmccann](https://discuss.elastic.co/u/benmccann)\ **Post date:** [August 8, 2013, 2:55am UTC](https://discuss.elastic.co/t/elasticsearch-slow-crashing/13117/1 "2013-08-08T02:55:38Z")
Hi, I've just setup an ElasticSearch index and it's performing very poorly. There's no information in the guide about running ElasticSearch from an operational perspective, which is a frustrating experience as a newcomer. Is there anything like MongoDB's production notes[http://docs.mongodb.org/manual/administration/production-notes/](http://docs.mongodb.org/manual/administration/production-notes/) available anywhere on the web? Are there rules of thumb about how to configure ElasticSearch or troubleshoot it? I installed the .deb package, inserted 50M records, and the default out-of-the-box performance is very bad. The data I'm working with is professional resumes and I'm trying to do searches for job candidates with the Java client library. Thanks, Ben -- 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 [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![Ivan](https://avatars.discourse-cdn.com/v4/letter/i/df788c/32.png) [@Ivan](https://discuss.elastic.co/u/Ivan)\ **Post date:** [August 8, 2013, 3:35am UTC](https://discuss.elastic.co/t/elasticsearch-slow-crashing/13117/2 "2013-08-08T03:35:29Z")
There is nothing official, but I have collected a few random blog posts over the years: > **[ElasticSearch Cluster: Configuration & Best Practices](http://www.xmsxmx.com/elasticsearch-cluster-configuration-best-practices/)** > > I was recently working on setting up an elasticsearch cluster with apache whirr. Setting up a cluster is one thing and running it is entirely different. Running a cluster is far more complex than setting one up. Things are no different for an... [http://asquera.de/opensource/2012/11/25/elasticsearch-pre-flight-checklist/](http://asquera.de/opensource/2012/11/25/elasticsearch-pre-flight-checklist/) [http://exploringelasticsearch.com/](http://exploringelasticsearch.com/) [http://euphonious-intuition.com/2013/02/five-things-i-learned-from-elasticsearch-training/](http://euphonious-intuition.com/2013/02/five-things-i-learned-from-elasticsearch-training/) > **[Scaling massive elastic search clusters - Rafał Kuć - Sematext](https://www.slideshare.net/kucrafal/scaling-massive-elastic-search-clusters-rafa-ku-sematext)** > > Scaling massive elastic search clusters - Rafał Kuć - Sematext - Download as a PDF or view online for free Out-of-the-box, elasticsearch performs pretty well as far as default server settings go. Set your JVM to use 50% of the available memory on the server. Can you share your index mapping and an example query? Are you using facets or nested/child objects? There are many ways to achieve poor performance via inefficiencies in the mapping. -- Ivan On Wed, Aug 7, 2013 at 7:55 PM, Ben McCann [benjamin.j.mccann@gmail.com](mailto:benjamin.j.mccann@gmail.com)wrote: > Hi, > > I've just setup an Elasticsearch index and it's performing very poorly. > There's no information in the guide about running Elasticsearch from an > operational perspective, which is a frustrating experience as a newcomer. > Is there anything like MongoDB's production notes[http://docs.mongodb.org/manual/administration/production-notes/](http://docs.mongodb.org/manual/administration/production-notes/) available > anywhere on the web? Are there rules of thumb about how to configure > Elasticsearch or troubleshoot it? I installed the .deb package, inserted > 50M records, and the default out-of-the-box performance is very bad. The > data I'm working with is professional resumes and I'm trying to do searches > for job candidates with the Java client library. > > Thanks, > Ben > > -- > 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 [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- 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 [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![Ben\_McCann\_2](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ben_mccann_2/32/1097_2.png) [@Ben\_McCann\_2](https://discuss.elastic.co/u/Ben_McCann_2)\ **Post date:** [August 8, 2013, 4:41am UTC](https://discuss.elastic.co/t/elasticsearch-slow-crashing/13117/3 "2013-08-08T04:41:00Z")
Ivan, thanks so much for sharing! Setting the heap size correctly made the query 10x faster! I'll read the rest of the docs you sent and see if I can squeeze out any other improvements, but as long as performance is consistent at this level for the other queries I'll want to do, then I should be good to go. I submitted a pull request to better document this setting [https://github.com/elasticsearch/elasticsearch/pull/3460](https://github.com/elasticsearch/elasticsearch/pull/3460) in the start script, so that others have an easier time getting started. Thanks again! -Ben On Wed, Aug 7, 2013 at 8:35 PM, Ivan Brusic [ivan@brusic.com](mailto:ivan@brusic.com) wrote: > There is nothing official, but I have collected a few random blog posts > over the years: > [ElasticSearch Cluster: Configuration & Best Practices | -Xms -Xmx](http://www.xmsxmx.com/elasticsearch-cluster-configuration-best-practices/) > [http://asquera.de/opensource/2012/11/25/elasticsearch-pre-flight-checklist/](http://asquera.de/opensource/2012/11/25/elasticsearch-pre-flight-checklist/) > [http://exploringelasticsearch.com/](http://exploringelasticsearch.com/) > > [http://euphonious-intuition.com/2013/02/five-things-i-learned-from-elasticsearch-training/](http://euphonious-intuition.com/2013/02/five-things-i-learned-from-elasticsearch-training/) > > [Scaling massive elastic search clusters - Rafał Kuć - Sematext | PPT](http://www.slideshare.net/kucrafal/scaling-massive-elastic-search-clusters-rafa-ku-sematext) > > Out-of-the-box, elasticsearch performs pretty well as far as default > server settings go. Set your JVM to use 50% of the available memory on the > server. Can you share your index mapping and an example query? Are you > using facets or nested/child objects? There are many ways to achieve poor > performance via inefficiencies in the mapping. > > -- > Ivan > > On Wed, Aug 7, 2013 at 7:55 PM, Ben McCann [benjamin.j.mccann@gmail.com](mailto:benjamin.j.mccann@gmail.com)wrote: > > > Hi, > > > > I've just setup an Elasticsearch index and it's performing very poorly. > > There's no information in the guide about running Elasticsearch from an > > operational perspective, which is a frustrating experience as a newcomer. > > Is there anything like MongoDB's production notes[http://docs.mongodb.org/manual/administration/production-notes/](http://docs.mongodb.org/manual/administration/production-notes/) available > > anywhere on the web? Are there rules of thumb about how to configure > > Elasticsearch or troubleshoot it? I installed the .deb package, inserted > > 50M records, and the default out-of-the-box performance is very bad. The > > data I'm working with is professional resumes and I'm trying to do searches > > for job candidates with the Java client library. > > > > Thanks, > > Ben > > > > -- > > 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 [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > > > > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). > > -- > You received this message because you are subscribed to a topic in the > Google Groups "elasticsearch" group. > To unsubscribe from this topic, visit > [https://groups.google.com/d/topic/elasticsearch/0Ynvtnrt0vg/unsubscribe](https://groups.google.com/d/topic/elasticsearch/0Ynvtnrt0vg/unsubscribe). > To unsubscribe from this group and all its topics, send an email to > [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- > **[Ben McCann on about.me](https://about.me/benmccann)** > > I am a Founder, Entrepreneur, and Investor in Mountain View, California. Visit my website. -- 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 [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:22am UTC](https://discuss.elastic.co/t/elasticsearch-slow-crashing/13117/4 "2017-07-06T02:22:14Z")