# Sudden spike in CPU

**URL:** https://discuss.elastic.co/t/sudden-spike-in-cpu/284972
**Category:** Elasticsearch
**Created:** [September 23, 2021, 8:41am UTC](https://discuss.elastic.co/t/sudden-spike-in-cpu/284972 "2021-09-23T08:41:24Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![kehers](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kehers/32/89761_2.png) [@kehers](https://discuss.elastic.co/u/kehers)
#### Post date: [September 23, 2021, 8:41am UTC](https://discuss.elastic.co/t/sudden-spike-in-cpu/284972/1 "2021-09-23T08:41:24Z")

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I noticed a sudden spike in CPU (then response times) in our Elasticsearch instance this morning. Surprisingly, the health was green through this. Is there a way to properly investigate what could be the cause?

 ![Screenshot 2021-09-23 at 09.33.29](https://us1.discourse-cdn.com/elastic/original/3X/a/6/a6783eeabb446f1d71cbed5630ff5653603f316c.png)

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<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: [October 21, 2021, 8:42am UTC](https://discuss.elastic.co/t/sudden-spike-in-cpu/284972/2 "2021-10-21T08:42:22Z")

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