# Increase heap size of elasticsearch **URL:** \ **Category:** Elasticsearch\ **Created:** [August 20, 2016, 6:51pm UTC](https://discuss.elastic.co/t/increase-heap-size-of-elasticsearch/58512 "2016-08-20T18:51:21Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![sudarshan](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@sudarshan](https://discuss.elastic.co/u/sudarshan)\ **Post date:** [August 20, 2016, 6:51pm UTC](https://discuss.elastic.co/t/increase-heap-size-of-elasticsearch/58512/1 "2016-08-20T18:51:21Z")
How to increase heap size of elasticsearch. I have tried some of the things like changing ES\_HEAP\_SIZE=16g in /etc/sysconfig/elasticsearch but this didn't effect. I have installed elastic search directly through the directory, I haven't used any RPM or debain or any other. Please help me. Thank You ---
**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\ **Post date:** [August 20, 2016, 8:24pm UTC](https://discuss.elastic.co/t/increase-heap-size-of-elasticsearch/58512/2 "2016-08-20T20:24:29Z")
Set the ES\_HEAP\_SIZE variable in whatever script you're using to start bin/elasticsearch. There's documentation about it at the top of that file. ---
**Author:** ![sudarshan](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@sudarshan](https://discuss.elastic.co/u/sudarshan)\ **Post date:** [August 21, 2016, 5:16am UTC](https://discuss.elastic.co/t/increase-heap-size-of-elasticsearch/58512/3 "2016-08-21T05:16:26Z")
Yeah ..Got It . Thank You ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 5, 2017, 10:26pm UTC](https://discuss.elastic.co/t/increase-heap-size-of-elasticsearch/58512/4 "2017-07-05T22:26:23Z")