# ElasticSearch taking too much ram

**URL:** https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808
**Category:** Elasticsearch
**Created:** [December 11, 2024, 8:01am UTC](https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808 "2024-12-11T08:01:27Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![Wajahat\_Iqbal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wajahat_iqbal/32/139609_2.png) [@Wajahat\_Iqbal](https://discuss.elastic.co/u/Wajahat_Iqbal)
#### Post date: [December 11, 2024, 8:01am UTC](https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808/1 "2024-12-11T08:01:27Z")

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I have 3 node setup, my CPU usage is very low, I have 4 cpu and 32 gb of ram. why its taking so much ram.

 ![Screenshot 2024-12-11 at 12.59.36 PM](https://us1.discourse-cdn.com/elastic/original/3X/0/b/0bf959ab519f663f46910b47d2a995ad84728411.png)  
 ![Screenshot 2024-12-11 at 1.00.11 PM](https://us1.discourse-cdn.com/elastic/original/3X/6/c/6c322a06e5e049b5646a4c17ec56719a7567484b.png)

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### 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: [December 11, 2024, 8:10am UTC](https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808/2 "2024-12-11T08:10:46Z")

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Elasticsearch relies heavily on the operating system page cache for performance so it is expected that Elasticsearch will use 100% of RAM if you have enough data in the cluster to fill the page cache. It is recommended to have Elasticsearch run on dedicated nodes so no other processes interfere with the page cache, which means this is not an issue. If there are other processes that require memory the operating system will shrink the size of the page cache when required.

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### Author: ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)
#### Post date: [December 11, 2024, 9:48am UTC](https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808/3 "2024-12-11T09:48:44Z")

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See also [https://www.linuxatemyram.com/](https://www.linuxatemyram.com/)

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### 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: [December 11, 2024, 9:54am UTC](https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808/4 "2024-12-11T09:54:41Z")

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That is an excellent link! 🙂

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### Author: ![Wajahat\_Iqbal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wajahat_iqbal/32/139609_2.png) [@Wajahat\_Iqbal](https://discuss.elastic.co/u/Wajahat_Iqbal)
#### Post date: [December 11, 2024, 10:28am UTC](https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808/5 "2024-12-11T10:28:19Z")

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All nodes are dedicated for the elasticsearch no other processes are running.  
Does that mean I do not need to worry about anything

 ![Screenshot 2024-12-11 at 3.26.07 PM](https://us1.discourse-cdn.com/elastic/original/3X/e/8/e87fe47d75e3708c3f58d35e07a69202e9c9654c.png)

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<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: [December 11, 2024, 10:46am UTC](https://discuss.elastic.co/t/elasticsearch-taking-too-much-ram/371808/6 "2024-12-11T10:46:30Z")

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> [@Wajahat\_Iqbal](#):
>
> Does that mean I do not need to worry about anything

Yes. The memory is there to be used.