# Increased Read IOPS usage after upgrade from 8.19.3 to 9.1.3

**URL:** <https://discuss.elastic.co/t/increased-read-iops-usage-after-upgrade-from-8-19-3-to-9-1-3/382156>\
**Category:** Elasticsearch\
**Created:** [September 23, 2025, 9:52am UTC](https://discuss.elastic.co/t/increased-read-iops-usage-after-upgrade-from-8-19-3-to-9-1-3/382156 "2025-09-23T09:52:41Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![RainTown](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/raintown/32/140206_2.png) [@RainTown](https://discuss.elastic.co/u/RainTown)\
**Post date:** [September 25, 2025, 1:37pm UTC](https://discuss.elastic.co/t/increased-read-iops-usage-after-upgrade-from-8-19-3-to-9-1-3/382156/4 "2025-09-25T13:37:31Z")

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We had similar thread before, which sadly did not reach a conclusion:

> [@Increased Read IOPS usage after upgrade from 8.18.0 to 9.0.1](https://discuss.elastic.co/t/increased-read-iops-usage-after-upgrade-from-8-18-0-to-9-0-1/377986):
>
> Hi all, since upgrading from 8.18.0 to 9.0.1 i'm seeing a massive increase of read IOPS on the data node disks. I couldn't see anything obvious in the release notes of 8.18.1, 9.0.0 and 9.0.1 that would lead to this. Here's a screenshot of it: Has anyone experienced the same or knows if it is a known issue - or even expected?

I made some comments in that thread, which may or not have been helpful there, and same applies here.

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_[View the full topic](https://discuss.elastic.co/t/increased-read-iops-usage-after-upgrade-from-8-19-3-to-9-1-3/382156)._