# Elasticsearch Memory Optimization?

**URL:** <https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335>\
**Category:** Elasticsearch\
**Created:** [February 12, 2023, 6:24pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335 "2023-02-12T18:24:58Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![Sheharyar\_Khalid](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sheharyar_khalid/32/112227_2.png) [@Sheharyar\_Khalid](https://discuss.elastic.co/u/Sheharyar_Khalid)\
**Post date:** [February 12, 2023, 6:24pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335/1 "2023-02-12T18:24:59Z")

</div>

Hello,

I have 64GB of RAM on my machine. I am trying to optimize the elasticsearch's performance by utilizing maximum possible hardware.

I noticed that the elasticsearch is not utilizing as much RAM as allocated to it i.e. 32GB and my search speed for when I reduce the RAM to 10GB is similar to when I allocate 32GB.

**Is there a way to optimize this, so that all my search data (index data) can be loaded into memory?**  
**Is this something that elasticsearch does?**  
**In other words: can we do in memory computation on all my data in elasticsearch provided I have enough RAM?**

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [February 12, 2023, 6:37pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335/2 "2023-02-12T18:37:56Z")

</div>

What is the size of your indices per node?

---

<div class="post-metadata">

**Author:** ![Sheharyar\_Khalid](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sheharyar_khalid/32/112227_2.png) [@Sheharyar\_Khalid](https://discuss.elastic.co/u/Sheharyar_Khalid)\
**Post date:** [February 12, 2023, 7:04pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335/3 "2023-02-12T19:04:58Z")

</div>

@Christian_Dahlqvist my indices range from 5-7GB. I have a single node deployment

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [February 12, 2023, 7:22pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335/4 "2023-02-12T19:22:02Z")

</div>

What is the total data volume? What is the total size of the indices you are querying?

---

<div class="post-metadata">

**Author:** ![Sheharyar\_Khalid](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sheharyar_khalid/32/112227_2.png) [@Sheharyar\_Khalid](https://discuss.elastic.co/u/Sheharyar_Khalid)\
**Post date:** [February 12, 2023, 7:27pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335/5 "2023-02-12T19:27:41Z")

</div>

Total data is around 250GB spread on 40 indices.

---

<div class="post-metadata">

**Author:** ![Sheharyar\_Khalid](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sheharyar_khalid/32/112227_2.png) [@Sheharyar\_Khalid](https://discuss.elastic.co/u/Sheharyar_Khalid)\
**Post date:** [February 13, 2023, 4:23pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335/6 "2023-02-13T16:23:13Z")

</div>

@Christian_Dahlqvist any recommendations?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 13, 2023, 4:23pm UTC](https://discuss.elastic.co/t/elasticsearch-memory-optimization/325335/7 "2023-03-13T16:23:40Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.