# Minimum JVM heap size
**URL:** https://discuss.elastic.co/t/minimum-jvm-heap-size/72564
**Category:** Elasticsearch
**Created:** [January 24, 2017, 3:47am UTC](https://discuss.elastic.co/t/minimum-jvm-heap-size/72564 "2017-01-24T03:47:02Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@peterbe](https://discuss.elastic.co/u/peterbe)
#### Post date: [January 24, 2017, 3:47am UTC](https://discuss.elastic.co/t/minimum-jvm-heap-size/72564/1 "2017-01-24T03:47:02Z")
I have once ES 2.4.1 instance on one Digital Ocean server. It holds about ~2M documents. Quite large.
It uses, at the time of writing, 546Mb of memory. No tuning done. Just 1 shard.
In other project I have ES 5.1.1. Also on Digital Ocean. This project holds about 10,000 documents. All smallish.
The default setting in `/etc/elasticsearch/jvm.options` was `-Xms2g` and `-Xmx2g`. **That ate my server!**.
Basically, how do I figure out what my **minimum heap size** can be for this server?
I guess I can try with `-Xms100m` and see how it goes but it would be nice if there were practical and "scientific" guides to this.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 21, 2017, 3:47am UTC](https://discuss.elastic.co/t/minimum-jvm-heap-size/72564/2 "2017-02-21T03:47:22Z")
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