# High CPU Percentage Usage

**URL:** <https://discuss.elastic.co/t/high-cpu-percentage-usage/46369>\
**Category:** Elasticsearch\
**Created:** [April 5, 2016, 10:24am UTC](https://discuss.elastic.co/t/high-cpu-percentage-usage/46369 "2016-04-05T10:24:40Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Arian\_Dave\_Mabanag](https://avatars.discourse-cdn.com/v4/letter/a/c77e96/32.png) [@Arian\_Dave\_Mabanag](https://discuss.elastic.co/u/Arian_Dave_Mabanag)\
**Post date:** [April 5, 2016, 10:24am UTC](https://discuss.elastic.co/t/high-cpu-percentage-usage/46369/1 "2016-04-05T10:24:41Z")

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Hi everyone,

I've been working on elasticsearch which always gets 100% cpu utilization while memory and heap utilization are pretty low (around 20-25% only). The main search being triggered (approximately 80% of the time) is a summation of a field filtered by date ranges; and batch indexing (approximately 20% of the time with only 200 records per transaction).

Could someone help me identify the cause of the high cpu utilization?

Environment Details per node:  
Elasticsearch Version: 2.3.1  
Java Version: 1.8.0\_74  
OS: Linux  
RAM: 4GB

My cluster details (all default) are as follows:  
"number\_of\_nodes" : 3,  
"number\_of\_data\_nodes" : 3,  
"active\_primary\_shards" : 5,  
"active\_shards\_percent\_as\_number" : 100.0

Here's a link to the [hot-threads](https://gist.github.com/geneqew/42f61a2bcffd1af1f74c3428a2f38716#file-calc-engine-hot-threads-txt)

Here's a link to the [query](https://gist.github.com/geneqew/ff282c0b7057703223ebaa70976f0649#file-calc-engine-query-txt)

thanks.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [April 6, 2016, 7:56am UTC](https://discuss.elastic.co/t/high-cpu-percentage-usage/46369/2 "2016-04-06T07:56:46Z")

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Looks like it's mostly search, is it causing issues?

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**Author:** ![Arian\_Dave\_Mabanag](https://avatars.discourse-cdn.com/v4/letter/a/c77e96/32.png) [@Arian\_Dave\_Mabanag](https://discuss.elastic.co/u/Arian_Dave_Mabanag)\
**Post date:** [April 6, 2016, 9:45am UTC](https://discuss.elastic.co/t/high-cpu-percentage-usage/46369/3 "2016-04-06T09:45:27Z")

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No issues in terms of data retrieval, nor errors. It's just that the high cpu utilization triggers alert monitors 😓

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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:** [July 5, 2017, 11:01pm UTC](https://discuss.elastic.co/t/high-cpu-percentage-usage/46369/4 "2017-07-05T23:01:57Z")

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