# How thread pool is calculated, in a cluster with different cpu core count?

**URL:** <https://discuss.elastic.co/t/how-thread-pool-is-calculated-in-a-cluster-with-different-cpu-core-count/238638>\
**Category:** Elasticsearch\
**Created:** [June 25, 2020, 10:11am UTC](https://discuss.elastic.co/t/how-thread-pool-is-calculated-in-a-cluster-with-different-cpu-core-count/238638 "2020-06-25T10:11:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ebuildy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ebuildy/32/6070_2.png) [@ebuildy](https://discuss.elastic.co/u/ebuildy)\
**Post date:** [June 25, 2020, 10:11am UTC](https://discuss.elastic.co/t/how-thread-pool-is-calculated-in-a-cluster-with-different-cpu-core-count/238638/1 "2020-06-25T10:11:50Z")

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We are running a cluster, with 6 data nodes (24 cpu cores), and 2 http nodes (8 cpu cores) (receive http traffic).

I can see ("/\_nodes"), each node have a a different thread pool "write" (24 max for data nodes, and 8 max for http nodes).

In our cluster, we send always via http node, is our maximum write thread pool "8" ?

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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 23, 2020, 10:11am UTC](https://discuss.elastic.co/t/how-thread-pool-is-calculated-in-a-cluster-with-different-cpu-core-count/238638/2 "2020-07-23T10:11:52Z")

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Closed on July 23, 2020, 10:11am UTC

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