# Elasticsearch - high load CPU

**URL:** <https://discuss.elastic.co/t/elasticsearch-high-load-cpu/268165>\
**Category:** Elasticsearch\
**Created:** [March 24, 2021, 4:44am UTC](https://discuss.elastic.co/t/elasticsearch-high-load-cpu/268165 "2021-03-24T04:44:22Z")\
**Posts on this page:** 4\
**Page:** 2

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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:** [March 24, 2021, 7:07am UTC](https://discuss.elastic.co/t/elasticsearch-high-load-cpu/268165/22 "2021-03-24T07:07:44Z")

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What are the differences between the two clusters? What versions are they on?

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**Author:** ![abruscino-eng](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/abruscino-eng/32/86005_2.png) [@abruscino-eng](https://discuss.elastic.co/u/abruscino-eng)\
**Post date:** [March 24, 2021, 7:10am UTC](https://discuss.elastic.co/t/elasticsearch-high-load-cpu/268165/23 "2021-03-24T07:10:21Z")

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In the legacy cluster we use elasticsearch 7.1.0 and have 2 DCs and in the new one we use 7.12.0 with 3 DCs

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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:** [March 24, 2021, 7:35am UTC](https://discuss.elastic.co/t/elasticsearch-high-load-cpu/268165/24 "2021-03-24T07:35:28Z")

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I am not sure what is causing it. I think you will need to capture hot threads when this next occurs to get to the bottom of it.

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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:** [April 21, 2021, 7:35am UTC](https://discuss.elastic.co/t/elasticsearch-high-load-cpu/268165/25 "2021-04-21T07:35:46Z")

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