# ES\_HEAP\_SIZE Size with 10k Doc's (5 MB total)? **URL:** \ **Category:** Elasticsearch\ **Created:** [April 2, 2015, 1:28pm UTC](https://discuss.elastic.co/t/es-heap-size-size-with-10k-docs-5-mb-total/23065 "2015-04-02T13:28:51Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Arno\_Nuhm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/arno_nuhm/32/783_2.png) [@Arno\_Nuhm](https://discuss.elastic.co/u/Arno_Nuhm)\ **Post date:** [April 2, 2015, 1:28pm UTC](https://discuss.elastic.co/t/es-heap-size-size-with-10k-docs-5-mb-total/23065/1 "2015-04-02T13:28:51Z")
I've read a lot of ES Performance Guides and most of them suggest setting the ES\_HEAP\_SIZE to half the RAM, but not more than 32 GB. ES is running on a Server with 32 GB of RAM, with nginx, php5-fpm and mysql on this machine and i'm only indexing around 10.000 Documents with a total size of 5 MB. The Index will probably grow to around 20.000 - 30.000 (10 - 15 MB) Documents in the near future, but thats - compared to other clusters - is still a fairly small amount of data. I dont have heavy traffic nor i'm doing crazy searches. Most types are not\_analyzed, because i'm primarily using ES for filtering, aggregations and sorting, full text search is just a minor benefit for me, but it would be crazy doing all the filtering with mysql and not with ES. Setting the ES\_HEAP\_SIZE to around 16 GB seems a bit of an overkill for my usecase, but since i'm using filters (which are cacheable) and doing aggregations with sorting, setting the ES\_HEAP\_SIZE at around 2 GB feels kinda right for me, but i'm not sure if i'm missing something here. Any reccommendation on the ES\_HEAP\_SIZE with a small number of documents is really appreciated, thanks! -- 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). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/f4a5b85b-d50e-4a29-837e-945c21fbd99f%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/f4a5b85b-d50e-4a29-837e-945c21fbd99f%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [April 2, 2015, 1:34pm UTC](https://discuss.elastic.co/t/es-heap-size-size-with-10k-docs-5-mb-total/23065/2 "2015-04-02T13:34:12Z")
Indeed. Start small 1gb or 2 and monitor your usage. Increase if you see your HEAP usage going up to 75%/80%. My 2 cents. -- David 😉 Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > Le 2 avr. 2015 à 15:28, Arno Nühm [arkste@gmail.com](mailto:arkste@gmail.com) a écrit : > > I've read a lot of ES Performance Guides and most of them suggest setting the ES\_HEAP\_SIZE to half the RAM, but not more than 32 GB. > > ES is running on a Server with 32 GB of RAM, with nginx, php5-fpm and mysql on this machine and i'm only indexing around 10.000 Documents with a total size of 5 MB. > The Index will probably grow to around 20.000 - 30.000 (10 - 15 MB) Documents in the near future, but thats - compared to other clusters - is still a fairly small amount of data. > > I dont have heavy traffic nor i'm doing crazy searches. > Most types are not\_analyzed, because i'm primarily using ES for filtering, aggregations and sorting, full text search is just a minor benefit for me, but it would be crazy doing all the filtering with mysql and not with ES. > > Setting the ES\_HEAP\_SIZE to around 16 GB seems a bit of an overkill for my usecase, but since i'm using filters (which are cacheable) and doing aggregations with sorting, setting the ES\_HEAP\_SIZE at around 2 GB feels kinda right for me, but i'm not sure if i'm missing something here. > > ## Any reccommendation on the ES\_HEAP\_SIZE with a small number of documents is really appreciated, thanks! > > 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). > To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/f4a5b85b-d50e-4a29-837e-945c21fbd99f%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/f4a5b85b-d50e-4a29-837e-945c21fbd99f%40googlegroups.com). > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- 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). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/3C2D6FEA-FF94-446B-9F35-A913C2C3F8DA%40pilato.fr](https://groups.google.com/d/msgid/elasticsearch/3C2D6FEA-FF94-446B-9F35-A913C2C3F8DA%40pilato.fr). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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, 12:22am UTC](https://discuss.elastic.co/t/es-heap-size-size-with-10k-docs-5-mb-total/23065/3 "2017-07-06T00:22:03Z")