# High CPU load on some node

**URL:** <https://discuss.elastic.co/t/high-cpu-load-on-some-node/122445>\
**Category:** Elasticsearch\
**Created:** [March 5, 2018, 7:01am UTC](https://discuss.elastic.co/t/high-cpu-load-on-some-node/122445 "2018-03-05T07:01:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![stephanustedy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephanustedy/32/25703_2.png) [@stephanustedy](https://discuss.elastic.co/u/stephanustedy)\
**Post date:** [March 5, 2018, 7:01am UTC](https://discuss.elastic.co/t/high-cpu-load-on-some-node/122445/1 "2018-03-05T07:01:19Z")

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Hi Guys,

I have face problem with our cluster for few days.  
Suddenly the cluster spikes.

I have multiple heavy queries, which is :

- aggregations
- range queries

is there any suggestion how to improve or what to check?

ES version : 5.2.2  
Shards : 12  
Replica : 1  
Docs : 51M  
Size : ~90GB  
Traffic: ~1500 queries / sec  
Nodes : 14 node with setup :

- 11 data only node
- 1 data and master node
- 2 coordinator only node

hot\_threads with options 100 thread :

> <https://gist.github.com/stephanustedy/fbe8c0e5bc1c5f6e1f2d37b5fda37d33>

Thanks!

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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 2, 2018, 7:01am UTC](https://discuss.elastic.co/t/high-cpu-load-on-some-node/122445/2 "2018-04-02T07:01:49Z")

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