# Increase in CPU usage when deleting snapshots
**URL:** https://discuss.elastic.co/t/increase-in-cpu-usage-when-deleting-snapshots/266682
**Category:** Elasticsearch
**Created:** [March 9, 2021, 11:29am UTC](https://discuss.elastic.co/t/increase-in-cpu-usage-when-deleting-snapshots/266682 "2021-03-09T11:29:46Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Norman\_Khine](https://discuss.elastic.co/u/Norman_Khine)
#### Post date: [March 9, 2021, 11:29am UTC](https://discuss.elastic.co/t/increase-in-cpu-usage-when-deleting-snapshots/266682/1 "2021-03-09T11:29:46Z")
Hello,
I have a process which deletes outdated ES snapshots which are saved on AWS S3.
Currently there are 326 snapshots which are scheduled for deletion. From the docs, [Delete a snapshot | Elasticsearch Reference [7.11] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/current/delete-snapshots.html) it states
_When a snapshot is deleted from a repository, Elasticsearch deletes all files associated with the snapshot that are not in-use by other snapshots._
Would this explain the load on the ES cluster and can someone explain the internals of the snapshot delete API?
Any advise is much appreciated.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 6, 2021, 11:30am UTC](https://discuss.elastic.co/t/increase-in-cpu-usage-when-deleting-snapshots/266682/2 "2021-04-06T11:30:02Z")
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