# CPU utilization always high

**URL:** <https://discuss.elastic.co/t/cpu-utilization-always-high/215274>\
**Category:** Elasticsearch\
**Created:** [January 16, 2020, 9:13am UTC](https://discuss.elastic.co/t/cpu-utilization-always-high/215274 "2020-01-16T09:13:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ankit\_Kumar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ankit_kumar/32/60871_2.png) [@Ankit\_Kumar](https://discuss.elastic.co/u/Ankit_Kumar)\
**Post date:** [January 16, 2020, 9:13am UTC](https://discuss.elastic.co/t/cpu-utilization-always-high/215274/1 "2020-01-16T09:13:13Z")

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HI guys,

I have around 20 index and 5 shards for each index, each shard takes bout 80-100 mb, data will grow exponentially in future, how many nodes should i have?  
Currently i have only 1 node and i am doing many search query and bulk updates parallely.  
Please suggest.

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**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:** [January 16, 2020, 12:34pm UTC](https://discuss.elastic.co/t/cpu-utilization-always-high/215274/2 "2020-01-16T12:34:04Z")

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Welcome!

May I suggest you look at the following resources about sizing:

[https://www.elastic.co/elasticon/conf/2016/sf/quantitative-cluster-sizing](https://www.elastic.co/elasticon/conf/2016/sf/quantitative-cluster-sizing)

> **[How many shards should I have in my Elasticsearch cluster?](https://www.elastic.co/blog/how-many-shards-should-i-have-in-my-elasticsearch-cluster)**
>
> If you are looking for practical guidelines around how many indices and shards to have in your cluster, this blog post will help you avoid common pitfalls.

https://www.slideshare.net/slideshow/embed_code/key/vR0XKDq4TGa77z

And [https://www.elastic.co/webinars/using-rally-to-get-your-elasticsearch-cluster-size-right](https://www.elastic.co/webinars/using-rally-to-get-your-elasticsearch-cluster-size-right)

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 13, 2020, 12:34pm UTC](https://discuss.elastic.co/t/cpu-utilization-always-high/215274/3 "2020-02-13T12:34:09Z")

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