# Delete\_by\_query optimization

**URL:** <https://discuss.elastic.co/t/delete-by-query-optimization/242590>\
**Category:** Elasticsearch\
**Created:** [July 25, 2020, 5:55am UTC](https://discuss.elastic.co/t/delete-by-query-optimization/242590 "2020-07-25T05:55:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ness1602](https://avatars.discourse-cdn.com/v4/letter/n/848f3c/32.png) [@ness1602](https://discuss.elastic.co/u/ness1602)\
**Post date:** [July 25, 2020, 5:55am UTC](https://discuss.elastic.co/t/delete-by-query-optimization/242590/1 "2020-07-25T05:55:23Z")

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Hi i have a question, how to optimize delete\_by\_query when deleting from multiple indices? Let's say i have 100 indices, can we somehow set delete\_by\_query one by one index , or limit number of simultaneous deletes? Or can we limit CPU usage ? Thanks

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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:** [August 22, 2020, 5:55am UTC](https://discuss.elastic.co/t/delete-by-query-optimization/242590/2 "2020-08-22T05:55:38Z")

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