# Elasticsearch read operations very high **URL:** \ **Category:** Elasticsearch\ **Created:** [December 14, 2018, 7:45pm UTC](https://discuss.elastic.co/t/elasticsearch-read-operations-very-high/160964 "2018-12-14T19:45:20Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![ramzey1981](https://avatars.discourse-cdn.com/v4/letter/r/d26b3c/32.png) [@ramzey1981](https://discuss.elastic.co/u/ramzey1981)\ **Post date:** [December 14, 2018, 7:45pm UTC](https://discuss.elastic.co/t/elasticsearch-read-operations-very-high/160964/1 "2018-12-14T19:45:20Z")
issue: our cluster is observing high read operations elasticsearch version: elasticsearch-6.2.1 5 nodes each with 2 cpus and 7GB or ram the data volume for elasticsearch uses a zfs pool mounted using an ssd drive and the scheduler for that drive is set to noop here is the node stats [https://pastebin.com/ThgJjX5u](https://pastebin.com/ThgJjX5u) here is the hot threads [https://pastebin.com/7Rv2vzGa](https://pastebin.com/7Rv2vzGa) ![21%20PM](https://us1.discourse-cdn.com/elastic/original/3X/e/c/ec92a2c1a06df19fad93a49e65f3eb54d17bcc97.png) i have also uploaded a diagram of the IO from a box and notice the avg reads per seconds is around 400. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 11, 2019, 7:45pm UTC](https://discuss.elastic.co/t/elasticsearch-read-operations-very-high/160964/2 "2019-01-11T19:45:26Z")
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